From 3ca68df6ee61e1a2034f3307b9edb9b3d87e5ca1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 20:11:25 -0400 Subject: [GFS2] split gfs2_dinode into on-disk and host variants The latter is used as part of gfs2-private part of struct inode. It actually stores a lot of fields differently; for now the declaration is just cloned, inode field is swtiched and changes propagated. Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index d470e52..191a3df 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -48,7 +48,7 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) { struct inode *inode = &ip->i_inode; - struct gfs2_dinode *di = &ip->i_di; + struct gfs2_dinode_host *di = &ip->i_di; inode->i_ino = ip->i_num.no_addr; @@ -98,7 +98,7 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) void gfs2_inode_attr_out(struct gfs2_inode *ip) { struct inode *inode = &ip->i_inode; - struct gfs2_dinode *di = &ip->i_di; + struct gfs2_dinode_host *di = &ip->i_di; gfs2_assert_withdraw(GFS2_SB(inode), (di->di_mode & S_IFMT) == (inode->i_mode & S_IFMT)); di->di_mode = inode->i_mode; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 1025960..52cb9a2 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -153,7 +153,7 @@ void gfs2_quota_in(struct gfs2_quota *qu, const void *buf) qu->qu_value = be64_to_cpu(str->qu_value); } -void gfs2_dinode_in(struct gfs2_dinode *di, const void *buf) +void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf) { const struct gfs2_dinode *str = buf; @@ -187,7 +187,7 @@ void gfs2_dinode_in(struct gfs2_dinode *di, const void *buf) } -void gfs2_dinode_out(const struct gfs2_dinode *di, void *buf) +void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf) { struct gfs2_dinode *str = buf; @@ -221,7 +221,7 @@ void gfs2_dinode_out(const struct gfs2_dinode *di, void *buf) } -void gfs2_dinode_print(const struct gfs2_dinode *di) +void gfs2_dinode_print(const struct gfs2_dinode_host *di) { gfs2_meta_header_print(&di->di_header); gfs2_inum_print(&di->di_num); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index a7ae7c1..f334b4b 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -270,6 +270,48 @@ struct gfs2_dinode { __u8 di_reserved[56]; }; +struct gfs2_dinode_host { + struct gfs2_meta_header di_header; + + struct gfs2_inum di_num; + + __be32 di_mode; /* mode of file */ + __be32 di_uid; /* owner's user id */ + __be32 di_gid; /* owner's group id */ + __be32 di_nlink; /* number of links to this file */ + __be64 di_size; /* number of bytes in file */ + __be64 di_blocks; /* number of blocks in file */ + __be64 di_atime; /* time last accessed */ + __be64 di_mtime; /* time last modified */ + __be64 di_ctime; /* time last changed */ + __be32 di_major; /* device major number */ + __be32 di_minor; /* device minor number */ + + /* This section varies from gfs1. Padding added to align with + * remainder of dinode + */ + __be64 di_goal_meta; /* rgrp to alloc from next */ + __be64 di_goal_data; /* data block goal */ + __be64 di_generation; /* generation number for NFS */ + + __be32 di_flags; /* GFS2_DIF_... */ + __be32 di_payload_format; /* GFS2_FORMAT_... */ + __u16 __pad1; /* Was ditype in gfs1 */ + __be16 di_height; /* height of metadata */ + __u32 __pad2; /* Unused incarnation number from gfs1 */ + + /* These only apply to directories */ + __u16 __pad3; /* Padding */ + __be16 di_depth; /* Number of bits in the table */ + __be32 di_entries; /* The number of entries in the directory */ + + struct gfs2_inum __pad4; /* Unused even in current gfs1 */ + + __be64 di_eattr; /* extended attribute block number */ + + __u8 di_reserved[56]; +}; + /* * directory structure - many of these per directory file */ @@ -422,8 +464,8 @@ extern void gfs2_rgrp_in(struct gfs2_rgrp *rg, const void *buf); extern void gfs2_rgrp_out(const struct gfs2_rgrp *rg, void *buf); extern void gfs2_quota_in(struct gfs2_quota *qu, const void *buf); extern void gfs2_quota_out(const struct gfs2_quota *qu, void *buf); -extern void gfs2_dinode_in(struct gfs2_dinode *di, const void *buf); -extern void gfs2_dinode_out(const struct gfs2_dinode *di, void *buf); +extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf); +extern void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); extern void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf); @@ -436,7 +478,7 @@ extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf); /* Printing functions */ extern void gfs2_rindex_print(const struct gfs2_rindex *ri); -extern void gfs2_dinode_print(const struct gfs2_dinode *di); +extern void gfs2_dinode_print(const struct gfs2_dinode_host *di); #endif /* __KERNEL__ */ -- cgit v0.10.2 From 5c6edb576f3800723bb65dbfaff82517089e32d0 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 20:33:01 -0400 Subject: [GFS2] gfs2_dinode_host fields are host-endian Annotated scalar fields, dropped unused ones. Note that it's not at all obvious that we want to convert all of them to host-endian... Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 118dc69..1c876e0 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -229,7 +229,7 @@ struct gfs2_inode { unsigned long i_flags; /* GIF_... */ u64 i_vn; - struct gfs2_dinode i_di; /* To be replaced by ref to block */ + struct gfs2_dinode_host i_di; /* To be replaced by ref to block */ struct gfs2_glock *i_gl; /* Move into i_gh? */ struct gfs2_holder i_iopen_gh; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index f334b4b..0e67a89 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -275,41 +275,34 @@ struct gfs2_dinode_host { struct gfs2_inum di_num; - __be32 di_mode; /* mode of file */ - __be32 di_uid; /* owner's user id */ - __be32 di_gid; /* owner's group id */ - __be32 di_nlink; /* number of links to this file */ - __be64 di_size; /* number of bytes in file */ - __be64 di_blocks; /* number of blocks in file */ - __be64 di_atime; /* time last accessed */ - __be64 di_mtime; /* time last modified */ - __be64 di_ctime; /* time last changed */ - __be32 di_major; /* device major number */ - __be32 di_minor; /* device minor number */ + __u32 di_mode; /* mode of file */ + __u32 di_uid; /* owner's user id */ + __u32 di_gid; /* owner's group id */ + __u32 di_nlink; /* number of links to this file */ + __u64 di_size; /* number of bytes in file */ + __u64 di_blocks; /* number of blocks in file */ + __u64 di_atime; /* time last accessed */ + __u64 di_mtime; /* time last modified */ + __u64 di_ctime; /* time last changed */ + __u32 di_major; /* device major number */ + __u32 di_minor; /* device minor number */ /* This section varies from gfs1. Padding added to align with * remainder of dinode */ - __be64 di_goal_meta; /* rgrp to alloc from next */ - __be64 di_goal_data; /* data block goal */ - __be64 di_generation; /* generation number for NFS */ + __u64 di_goal_meta; /* rgrp to alloc from next */ + __u64 di_goal_data; /* data block goal */ + __u64 di_generation; /* generation number for NFS */ - __be32 di_flags; /* GFS2_DIF_... */ - __be32 di_payload_format; /* GFS2_FORMAT_... */ - __u16 __pad1; /* Was ditype in gfs1 */ - __be16 di_height; /* height of metadata */ - __u32 __pad2; /* Unused incarnation number from gfs1 */ + __u32 di_flags; /* GFS2_DIF_... */ + __u32 di_payload_format; /* GFS2_FORMAT_... */ + __u16 di_height; /* height of metadata */ /* These only apply to directories */ - __u16 __pad3; /* Padding */ - __be16 di_depth; /* Number of bits in the table */ - __be32 di_entries; /* The number of entries in the directory */ - - struct gfs2_inum __pad4; /* Unused even in current gfs1 */ + __u16 di_depth; /* Number of bits in the table */ + __u32 di_entries; /* The number of entries in the directory */ - __be64 di_eattr; /* extended attribute block number */ - - __u8 di_reserved[56]; + __u64 di_eattr; /* extended attribute block number */ }; /* -- cgit v0.10.2 From f50dfaf78c01df3cc2d8819f07d6661915567bae Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 20:45:02 -0400 Subject: [GFS2] split gfs2_sb Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 1c876e0..bd596ba 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -450,7 +450,7 @@ struct gfs2_sbd { struct super_block *sd_vfs_meta; struct kobject sd_kobj; unsigned long sd_flags; /* SDF_... */ - struct gfs2_sb sd_sb; + struct gfs2_sb_host sd_sb; /* Constants computed on mount */ diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 52cb9a2..5b32f1a 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -79,7 +79,7 @@ static void gfs2_meta_header_print(const struct gfs2_meta_header *mh) pv(mh, mh_format, "%u"); } -void gfs2_sb_in(struct gfs2_sb *sb, const void *buf) +void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) { const struct gfs2_sb *str = buf; diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 6a78b1b..52aa322 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -97,7 +97,7 @@ void gfs2_tune_init(struct gfs2_tune *gt) * changed. */ -int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb *sb, int silent) +int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) { unsigned int x; diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h index 5bb443a..ac95064 100644 --- a/fs/gfs2/super.h +++ b/fs/gfs2/super.h @@ -14,7 +14,7 @@ void gfs2_tune_init(struct gfs2_tune *gt); -int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb *sb, int silent); +int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent); int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent); struct page *gfs2_read_super(struct super_block *sb, sector_t sector); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 0e67a89..b7bdfef 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -128,6 +128,26 @@ struct gfs2_sb { /* In gfs1, quota and license dinodes followed */ }; +struct gfs2_sb_host { + struct gfs2_meta_header sb_header; + + __be32 sb_fs_format; + __be32 sb_multihost_format; + __u32 __pad0; /* Was superblock flags in gfs1 */ + + __be32 sb_bsize; + __be32 sb_bsize_shift; + __u32 __pad1; /* Was journal segment size in gfs1 */ + + struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ + struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */ + struct gfs2_inum sb_root_dir; + + char sb_lockproto[GFS2_LOCKNAME_LEN]; + char sb_locktable[GFS2_LOCKNAME_LEN]; + /* In gfs1, quota and license dinodes followed */ +}; + /* * resource index structure */ @@ -450,7 +470,7 @@ struct gfs2_quota_change { extern void gfs2_inum_in(struct gfs2_inum *no, const void *buf); extern void gfs2_inum_out(const struct gfs2_inum *no, void *buf); -extern void gfs2_sb_in(struct gfs2_sb *sb, const void *buf); +extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf); extern void gfs2_rindex_in(struct gfs2_rindex *ri, const void *buf); extern void gfs2_rindex_out(const struct gfs2_rindex *ri, void *buf); extern void gfs2_rgrp_in(struct gfs2_rgrp *rg, const void *buf); -- cgit v0.10.2 From bc558c87bb7e50c4f728d32684a9f4f4c73ebde3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 21:02:41 -0400 Subject: [GFS2] fields of gfs2_sb_host are host-endian ... and several could be killed, but that's another story. Annotate scalar ones, kill completely unused. Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index b7bdfef..a5d36cd 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -131,16 +131,13 @@ struct gfs2_sb { struct gfs2_sb_host { struct gfs2_meta_header sb_header; - __be32 sb_fs_format; - __be32 sb_multihost_format; - __u32 __pad0; /* Was superblock flags in gfs1 */ + __u32 sb_fs_format; + __u32 sb_multihost_format; - __be32 sb_bsize; - __be32 sb_bsize_shift; - __u32 __pad1; /* Was journal segment size in gfs1 */ + __u32 sb_bsize; + __u32 sb_bsize_shift; struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ - struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */ struct gfs2_inum sb_root_dir; char sb_lockproto[GFS2_LOCKNAME_LEN]; -- cgit v0.10.2 From 68826664d12827d7a732192e2f00ba46fb899414 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 21:07:22 -0400 Subject: [GFS2] split and annotate gfs2_rgrp Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index bd596ba..8ca7a7f 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -68,7 +68,7 @@ struct gfs2_rgrpd { struct list_head rd_recent; /* Recently used rgrps */ struct gfs2_glock *rd_gl; /* Glock for this rgrp */ struct gfs2_rindex rd_ri; - struct gfs2_rgrp rd_rg; + struct gfs2_rgrp_host rd_rg; u64 rd_rg_vn; struct gfs2_bitmap *rd_bits; unsigned int rd_bh_count; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 5b32f1a..3b156a1 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -120,7 +120,7 @@ void gfs2_rindex_print(const struct gfs2_rindex *ri) pv(ri, ri_bitbytes, "%u"); } -void gfs2_rgrp_in(struct gfs2_rgrp *rg, const void *buf) +void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf) { const struct gfs2_rgrp *str = buf; @@ -131,7 +131,7 @@ void gfs2_rgrp_in(struct gfs2_rgrp *rg, const void *buf) rg->rg_igeneration = be64_to_cpu(str->rg_igeneration); } -void gfs2_rgrp_out(const struct gfs2_rgrp *rg, void *buf) +void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf) { struct gfs2_rgrp *str = buf; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index a5d36cd..e4ca6e4 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -193,6 +193,15 @@ struct gfs2_rgrp { __u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */ }; +struct gfs2_rgrp_host { + struct gfs2_meta_header rg_header; + + __u32 rg_flags; + __u32 rg_free; + __u32 rg_dinodes; + __u64 rg_igeneration; +}; + /* * quota structure */ @@ -470,8 +479,8 @@ extern void gfs2_inum_out(const struct gfs2_inum *no, void *buf); extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf); extern void gfs2_rindex_in(struct gfs2_rindex *ri, const void *buf); extern void gfs2_rindex_out(const struct gfs2_rindex *ri, void *buf); -extern void gfs2_rgrp_in(struct gfs2_rgrp *rg, const void *buf); -extern void gfs2_rgrp_out(const struct gfs2_rgrp *rg, void *buf); +extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf); +extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf); extern void gfs2_quota_in(struct gfs2_quota *qu, const void *buf); extern void gfs2_quota_out(const struct gfs2_quota *qu, void *buf); extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf); -- cgit v0.10.2 From e697264709c86040271cdd7abee781d7adbb7f91 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 21:29:46 -0400 Subject: [GFS2] split and annotate gfs2_inum_range Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 191a3df..7eb6b44 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -436,7 +436,7 @@ static int pick_formal_ino_1(struct gfs2_sbd *sdp, u64 *formal_ino) { struct gfs2_inode *ip = GFS2_I(sdp->sd_ir_inode); struct buffer_head *bh; - struct gfs2_inum_range ir; + struct gfs2_inum_range_host ir; int error; error = gfs2_trans_begin(sdp, RES_DINODE, 0); @@ -479,7 +479,7 @@ static int pick_formal_ino_2(struct gfs2_sbd *sdp, u64 *formal_ino) struct gfs2_inode *m_ip = GFS2_I(sdp->sd_inum_inode); struct gfs2_holder gh; struct buffer_head *bh; - struct gfs2_inum_range ir; + struct gfs2_inum_range_host ir; int error; error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 3b156a1..64f5f0c6 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -263,7 +263,7 @@ void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf) lh->lh_hash = be32_to_cpu(str->lh_hash); } -void gfs2_inum_range_in(struct gfs2_inum_range *ir, const void *buf) +void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf) { const struct gfs2_inum_range *str = buf; @@ -271,7 +271,7 @@ void gfs2_inum_range_in(struct gfs2_inum_range *ir, const void *buf) ir->ir_length = be64_to_cpu(str->ir_length); } -void gfs2_inum_range_out(const struct gfs2_inum_range *ir, void *buf) +void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf) { struct gfs2_inum_range *str = buf; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index e4ca6e4..c035587 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -445,6 +445,11 @@ struct gfs2_inum_range { __be64 ir_length; }; +struct gfs2_inum_range_host { + __u64 ir_start; + __u64 ir_length; +}; + /* * Statfs change * Describes an change to the pool of free and allocated @@ -488,8 +493,8 @@ extern void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); extern void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf); -extern void gfs2_inum_range_in(struct gfs2_inum_range *ir, const void *buf); -extern void gfs2_inum_range_out(const struct gfs2_inum_range *ir, void *buf); +extern void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf); +extern void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf); extern void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf); extern void gfs2_statfs_change_out(const struct gfs2_statfs_change *sc, void *buf); extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf); -- cgit v0.10.2 From 551676226163379c217e8ec54bd287eab9b8521e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 21:47:13 -0400 Subject: [GFS2] split and annotate gfs2_log_head Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 41a6b68..5406b19 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -491,7 +491,7 @@ static void trans_go_xmote_bh(struct gfs2_glock *gl) struct gfs2_sbd *sdp = gl->gl_sbd; struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); struct gfs2_glock *j_gl = ip->i_gl; - struct gfs2_log_header head; + struct gfs2_log_header_host head; int error; if (gl->gl_state != LM_ST_UNLOCKED && diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 8ca7a7f..e69f339 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -41,7 +41,7 @@ struct gfs2_log_operations { void (*lo_before_commit) (struct gfs2_sbd *sdp); void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai); void (*lo_before_scan) (struct gfs2_jdesc *jd, - struct gfs2_log_header *head, int pass); + struct gfs2_log_header_host *head, int pass); int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, struct gfs2_log_descriptor *ld, __be64 *ptr, int pass); diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index ab6d111..8a654cd 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -182,7 +182,7 @@ static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) } static void buf_lo_before_scan(struct gfs2_jdesc *jd, - struct gfs2_log_header *head, int pass) + struct gfs2_log_header_host *head, int pass) { struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); @@ -328,7 +328,7 @@ static void revoke_lo_before_commit(struct gfs2_sbd *sdp) } static void revoke_lo_before_scan(struct gfs2_jdesc *jd, - struct gfs2_log_header *head, int pass) + struct gfs2_log_header_host *head, int pass) { struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h index 5839c05..965bc65 100644 --- a/fs/gfs2/lops.h +++ b/fs/gfs2/lops.h @@ -60,7 +60,7 @@ static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) } static inline void lops_before_scan(struct gfs2_jdesc *jd, - struct gfs2_log_header *head, + struct gfs2_log_header_host *head, unsigned int pass) { int x; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 64f5f0c6..84b1ebc 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -251,7 +251,7 @@ void gfs2_dinode_print(const struct gfs2_dinode_host *di) printk(KERN_INFO " di_eattr = %llu\n", (unsigned long long)di->di_eattr); } -void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf) +void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf) { const struct gfs2_log_header *str = buf; diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 62cd223..4478162 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -132,10 +132,10 @@ void gfs2_revoke_clean(struct gfs2_sbd *sdp) */ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk, - struct gfs2_log_header *head) + struct gfs2_log_header_host *head) { struct buffer_head *bh; - struct gfs2_log_header lh; + struct gfs2_log_header_host lh; u32 hash; int error; @@ -143,7 +143,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk, if (error) return error; - memcpy(&lh, bh->b_data, sizeof(struct gfs2_log_header)); + memcpy(&lh, bh->b_data, sizeof(struct gfs2_log_header)); /* XXX */ lh.lh_hash = 0; hash = gfs2_disk_hash((char *)&lh, sizeof(struct gfs2_log_header)); gfs2_log_header_in(&lh, bh->b_data); @@ -174,7 +174,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk, */ static int find_good_lh(struct gfs2_jdesc *jd, unsigned int *blk, - struct gfs2_log_header *head) + struct gfs2_log_header_host *head) { unsigned int orig_blk = *blk; int error; @@ -205,10 +205,10 @@ static int find_good_lh(struct gfs2_jdesc *jd, unsigned int *blk, * Returns: errno */ -static int jhead_scan(struct gfs2_jdesc *jd, struct gfs2_log_header *head) +static int jhead_scan(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head) { unsigned int blk = head->lh_blkno; - struct gfs2_log_header lh; + struct gfs2_log_header_host lh; int error; for (;;) { @@ -245,9 +245,9 @@ static int jhead_scan(struct gfs2_jdesc *jd, struct gfs2_log_header *head) * Returns: errno */ -int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header *head) +int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head) { - struct gfs2_log_header lh_1, lh_m; + struct gfs2_log_header_host lh_1, lh_m; u32 blk_1, blk_2, blk_m; int error; @@ -320,7 +320,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start, length = be32_to_cpu(ld->ld_length); if (be32_to_cpu(ld->ld_header.mh_type) == GFS2_METATYPE_LH) { - struct gfs2_log_header lh; + struct gfs2_log_header_host lh; error = get_log_header(jd, start, &lh); if (!error) { gfs2_replay_incr_blk(sdp, &start); @@ -363,7 +363,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start, * Returns: errno */ -static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header *head) +static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head) { struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); @@ -425,7 +425,7 @@ int gfs2_recover_journal(struct gfs2_jdesc *jd) { struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); - struct gfs2_log_header head; + struct gfs2_log_header_host head; struct gfs2_holder j_gh, ji_gh, t_gh; unsigned long t; int ro = 0; diff --git a/fs/gfs2/recovery.h b/fs/gfs2/recovery.h index 961feed..f7235e6 100644 --- a/fs/gfs2/recovery.h +++ b/fs/gfs2/recovery.h @@ -26,7 +26,7 @@ int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where); void gfs2_revoke_clean(struct gfs2_sbd *sdp); int gfs2_find_jhead(struct gfs2_jdesc *jd, - struct gfs2_log_header *head); + struct gfs2_log_header_host *head); int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd); void gfs2_check_journals(struct gfs2_sbd *sdp); diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 52aa322..0faf563 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -508,7 +508,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); struct gfs2_glock *j_gl = ip->i_gl; struct gfs2_holder t_gh; - struct gfs2_log_header head; + struct gfs2_log_header_host head; int error; error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, @@ -873,7 +873,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd; struct lfcc *lfcc; LIST_HEAD(list); - struct gfs2_log_header lh; + struct gfs2_log_header_host lh; int error; error = gfs2_jindex_hold(sdp, &ji_gh); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index c035587..fb69a64 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -405,6 +405,16 @@ struct gfs2_log_header { __be32 lh_hash; }; +struct gfs2_log_header_host { + struct gfs2_meta_header lh_header; + + __u64 lh_sequence; /* Sequence number of this transaction */ + __u32 lh_flags; /* GFS2_LOG_HEAD_... */ + __u32 lh_tail; /* Block number of log tail */ + __u32 lh_blkno; + __u32 lh_hash; +}; + /* * Log type descriptor */ @@ -492,7 +502,7 @@ extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf); extern void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); -extern void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf); +extern void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf); extern void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf); extern void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf); extern void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf); -- cgit v0.10.2 From 2a2c98247b822db8df037a56c27201f9d716ac66 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 31 Oct 2006 14:44:50 -0500 Subject: [GFS2] Fix crc32 calculation in recovery.c Commit "[GFS2] split and annotate gfs2_log_head" resulted in an incorrect checksum calculation for log headers. This patch corrects the problem without resorting to copying the whole log header as the previous code used to. Cc: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 4478162..4acf238 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -136,6 +136,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk, { struct buffer_head *bh; struct gfs2_log_header_host lh; +static const u32 nothing = 0; u32 hash; int error; @@ -143,11 +144,11 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk, if (error) return error; - memcpy(&lh, bh->b_data, sizeof(struct gfs2_log_header)); /* XXX */ - lh.lh_hash = 0; - hash = gfs2_disk_hash((char *)&lh, sizeof(struct gfs2_log_header)); + hash = crc32_le((u32)~0, bh->b_data, sizeof(struct gfs2_log_header) - + sizeof(u32)); + hash = crc32_le(hash, (unsigned char const *)¬hing, sizeof(nothing)); + hash ^= (u32)~0; gfs2_log_header_in(&lh, bh->b_data); - brelse(bh); if (lh.lh_header.mh_magic != GFS2_MAGIC || -- cgit v0.10.2 From e928a76f959e89884f6186bb6f846c533847d5df Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 21:57:23 -0400 Subject: [GFS2] split and annotate gfs2_meta_header Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 84b1ebc..b5aa7ab 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -54,7 +54,7 @@ static void gfs2_inum_print(const struct gfs2_inum *no) printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)no->no_addr); } -static void gfs2_meta_header_in(struct gfs2_meta_header *mh, const void *buf) +static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf) { const struct gfs2_meta_header *str = buf; @@ -63,7 +63,7 @@ static void gfs2_meta_header_in(struct gfs2_meta_header *mh, const void *buf) mh->mh_format = be32_to_cpu(str->mh_format); } -static void gfs2_meta_header_out(const struct gfs2_meta_header *mh, void *buf) +static void gfs2_meta_header_out(const struct gfs2_meta_header_host *mh, void *buf) { struct gfs2_meta_header *str = buf; @@ -72,7 +72,7 @@ static void gfs2_meta_header_out(const struct gfs2_meta_header *mh, void *buf) str->mh_format = cpu_to_be32(mh->mh_format); } -static void gfs2_meta_header_print(const struct gfs2_meta_header *mh) +static void gfs2_meta_header_print(const struct gfs2_meta_header_host *mh) { pv(mh, mh_magic, "0x%.8X"); pv(mh, mh_type, "%u"); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index fb69a64..76eb9e1 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -89,6 +89,12 @@ struct gfs2_meta_header { __be32 __pad1; /* Was incarnation number in gfs1 */ }; +struct gfs2_meta_header_host { + __u32 mh_magic; + __u32 mh_type; + __u32 mh_format; +}; + /* * super-block structure * @@ -129,7 +135,7 @@ struct gfs2_sb { }; struct gfs2_sb_host { - struct gfs2_meta_header sb_header; + struct gfs2_meta_header_host sb_header; __u32 sb_fs_format; __u32 sb_multihost_format; @@ -194,7 +200,7 @@ struct gfs2_rgrp { }; struct gfs2_rgrp_host { - struct gfs2_meta_header rg_header; + struct gfs2_meta_header_host rg_header; __u32 rg_flags; __u32 rg_free; @@ -297,7 +303,7 @@ struct gfs2_dinode { }; struct gfs2_dinode_host { - struct gfs2_meta_header di_header; + struct gfs2_meta_header_host di_header; struct gfs2_inum di_num; @@ -406,7 +412,7 @@ struct gfs2_log_header { }; struct gfs2_log_header_host { - struct gfs2_meta_header lh_header; + struct gfs2_meta_header_host lh_header; __u64 lh_sequence; /* Sequence number of this transaction */ __u32 lh_flags; /* GFS2_LOG_HEAD_... */ -- cgit v0.10.2 From 1e81c4c3e0f55c95b6278a827262b80debd0dc7e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 22:51:24 -0400 Subject: [GFS2] split and annotate gfs_rindex Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index e69f339..e4afc2c 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -67,7 +67,7 @@ struct gfs2_rgrpd { struct list_head rd_list_mru; struct list_head rd_recent; /* Recently used rgrps */ struct gfs2_glock *rd_gl; /* Glock for this rgrp */ - struct gfs2_rindex rd_ri; + struct gfs2_rindex_host rd_ri; struct gfs2_rgrp_host rd_rg; u64 rd_rg_vn; struct gfs2_bitmap *rd_bits; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index b5aa7ab..c4e099d 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -97,7 +97,7 @@ void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); } -void gfs2_rindex_in(struct gfs2_rindex *ri, const void *buf) +void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf) { const struct gfs2_rindex *str = buf; @@ -109,7 +109,7 @@ void gfs2_rindex_in(struct gfs2_rindex *ri, const void *buf) } -void gfs2_rindex_print(const struct gfs2_rindex *ri) +void gfs2_rindex_print(const struct gfs2_rindex_host *ri) { printk(KERN_INFO " ri_addr = %llu\n", (unsigned long long)ri->ri_addr); pv(ri, ri_length, "%u"); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index b261385..07dfd63 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -253,7 +253,7 @@ void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd) } -static inline int rgrp_contains_block(struct gfs2_rindex *ri, u64 block) +static inline int rgrp_contains_block(struct gfs2_rindex_host *ri, u64 block) { u64 first = ri->ri_data0; u64 last = first + ri->ri_data; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 76eb9e1..7dd5e4c 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -168,6 +168,14 @@ struct gfs2_rindex { __u8 ri_reserved[64]; }; +struct gfs2_rindex_host { + __u64 ri_addr; /* grp block disk address */ + __u64 ri_data0; /* first data location */ + __u32 ri_length; /* length of rgrp header in fs blocks */ + __u32 ri_data; /* num of data blocks in rgrp */ + __u32 ri_bitbytes; /* number of bytes in data bitmaps */ +}; + /* * resource group header structure */ @@ -498,8 +506,8 @@ struct gfs2_quota_change { extern void gfs2_inum_in(struct gfs2_inum *no, const void *buf); extern void gfs2_inum_out(const struct gfs2_inum *no, void *buf); extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf); -extern void gfs2_rindex_in(struct gfs2_rindex *ri, const void *buf); -extern void gfs2_rindex_out(const struct gfs2_rindex *ri, void *buf); +extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf); +extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf); extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf); extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf); extern void gfs2_quota_in(struct gfs2_quota *qu, const void *buf); @@ -517,7 +525,7 @@ extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf); /* Printing functions */ -extern void gfs2_rindex_print(const struct gfs2_rindex *ri); +extern void gfs2_rindex_print(const struct gfs2_rindex_host *ri); extern void gfs2_dinode_print(const struct gfs2_dinode_host *di); #endif /* __KERNEL__ */ -- cgit v0.10.2 From 629a21e7ecedf779c68dcaa9a186069f57a7c652 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 22:51:24 -0400 Subject: [GFS2] split and annotate gfs2_inum Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index e24af28b1..d67a376 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1194,7 +1194,7 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset, int *copied) { const struct gfs2_dirent *dent, *dent_next; - struct gfs2_inum inum; + struct gfs2_inum_host inum; u64 off, off_next; unsigned int x, y; int run = 0; @@ -1456,7 +1456,7 @@ out: */ int gfs2_dir_search(struct inode *dir, const struct qstr *name, - struct gfs2_inum *inum, unsigned int *type) + struct gfs2_inum_host *inum, unsigned int *type) { struct buffer_head *bh; struct gfs2_dirent *dent; @@ -1531,7 +1531,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name) */ int gfs2_dir_add(struct inode *inode, const struct qstr *name, - const struct gfs2_inum *inum, unsigned type) + const struct gfs2_inum_host *inum, unsigned type) { struct gfs2_inode *ip = GFS2_I(inode); struct buffer_head *bh; @@ -1666,7 +1666,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name) */ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, - struct gfs2_inum *inum, unsigned int new_type) + struct gfs2_inum_host *inum, unsigned int new_type) { struct buffer_head *bh; struct gfs2_dirent *dent; diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h index 3712334..b21b336 100644 --- a/fs/gfs2/dir.h +++ b/fs/gfs2/dir.h @@ -31,17 +31,17 @@ struct gfs2_inum; typedef int (*gfs2_filldir_t) (void *opaque, const char *name, unsigned int length, u64 offset, - struct gfs2_inum *inum, unsigned int type); + struct gfs2_inum_host *inum, unsigned int type); int gfs2_dir_search(struct inode *dir, const struct qstr *filename, - struct gfs2_inum *inum, unsigned int *type); + struct gfs2_inum_host *inum, unsigned int *type); int gfs2_dir_add(struct inode *inode, const struct qstr *filename, - const struct gfs2_inum *inum, unsigned int type); + const struct gfs2_inum_host *inum, unsigned int type); int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename); int gfs2_dir_read(struct inode *inode, u64 * offset, void *opaque, gfs2_filldir_t filldir); int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, - struct gfs2_inum *new_inum, unsigned int new_type); + struct gfs2_inum_host *new_inum, unsigned int new_type); int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip); diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index e4afc2c..20c9b4f 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -224,7 +224,7 @@ enum { struct gfs2_inode { struct inode i_inode; - struct gfs2_inum i_num; + struct gfs2_inum_host i_num; unsigned long i_flags; /* GIF_... */ diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 7eb6b44..dadd1f3 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -112,7 +112,7 @@ void gfs2_inode_attr_out(struct gfs2_inode *ip) static int iget_test(struct inode *inode, void *opaque) { struct gfs2_inode *ip = GFS2_I(inode); - struct gfs2_inum *inum = opaque; + struct gfs2_inum_host *inum = opaque; if (ip && ip->i_num.no_addr == inum->no_addr) return 1; @@ -123,19 +123,19 @@ static int iget_test(struct inode *inode, void *opaque) static int iget_set(struct inode *inode, void *opaque) { struct gfs2_inode *ip = GFS2_I(inode); - struct gfs2_inum *inum = opaque; + struct gfs2_inum_host *inum = opaque; ip->i_num = *inum; return 0; } -struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum *inum) +struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum) { return ilookup5(sb, (unsigned long)inum->no_formal_ino, iget_test, inum); } -static struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum *inum) +static struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum_host *inum) { return iget5_locked(sb, (unsigned long)inum->no_formal_ino, iget_test, iget_set, inum); @@ -150,7 +150,7 @@ static struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum *inum) * Returns: A VFS inode, or an error */ -struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum *inum, unsigned int type) +struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned int type) { struct inode *inode = gfs2_iget(sb, inum); struct gfs2_inode *ip = GFS2_I(inode); @@ -394,7 +394,7 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, struct super_block *sb = dir->i_sb; struct gfs2_inode *dip = GFS2_I(dir); struct gfs2_holder d_gh; - struct gfs2_inum inum; + struct gfs2_inum_host inum; unsigned int type; int error = 0; struct inode *inode = NULL; @@ -610,7 +610,7 @@ static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode, *gid = current->fsgid; } -static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum *inum, +static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum_host *inum, u64 *generation) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); @@ -650,7 +650,7 @@ out: */ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, - const struct gfs2_inum *inum, unsigned int mode, + const struct gfs2_inum_host *inum, unsigned int mode, unsigned int uid, unsigned int gid, const u64 *generation) { @@ -707,7 +707,7 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, } static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, - unsigned int mode, const struct gfs2_inum *inum, + unsigned int mode, const struct gfs2_inum_host *inum, const u64 *generation) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); @@ -866,7 +866,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, struct gfs2_inode *dip = ghs->gh_gl->gl_object; struct inode *dir = &dip->i_inode; struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); - struct gfs2_inum inum; + struct gfs2_inum_host inum; int error; u64 generation; @@ -1018,7 +1018,7 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, struct gfs2_inode *ip) { - struct gfs2_inum inum; + struct gfs2_inum_host inum; unsigned int type; int error; diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index f5d8617..d699b92 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -27,8 +27,8 @@ static inline int gfs2_is_dir(struct gfs2_inode *ip) void gfs2_inode_attr_in(struct gfs2_inode *ip); void gfs2_inode_attr_out(struct gfs2_inode *ip); -struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum *inum, unsigned type); -struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum *inum); +struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type); +struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum); int gfs2_inode_refresh(struct gfs2_inode *ip); diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index c4e099d..32f592f 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -32,7 +32,7 @@ * first arg: the cpu-order structure */ -void gfs2_inum_in(struct gfs2_inum *no, const void *buf) +void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf) { const struct gfs2_inum *str = buf; @@ -40,7 +40,7 @@ void gfs2_inum_in(struct gfs2_inum *no, const void *buf) no->no_addr = be64_to_cpu(str->no_addr); } -void gfs2_inum_out(const struct gfs2_inum *no, void *buf) +void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf) { struct gfs2_inum *str = buf; @@ -48,7 +48,7 @@ void gfs2_inum_out(const struct gfs2_inum *no, void *buf) str->no_addr = cpu_to_be64(no->no_addr); } -static void gfs2_inum_print(const struct gfs2_inum *no) +static void gfs2_inum_print(const struct gfs2_inum_host *no) { printk(KERN_INFO " no_formal_ino = %llu\n", (unsigned long long)no->no_formal_ino); printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)no->no_addr); diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c index 00041b1..c36f9e3 100644 --- a/fs/gfs2/ops_dentry.c +++ b/fs/gfs2/ops_dentry.c @@ -43,7 +43,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd) struct inode *inode = dentry->d_inode; struct gfs2_holder d_gh; struct gfs2_inode *ip; - struct gfs2_inum inum; + struct gfs2_inum_host inum; unsigned int type; int error; diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c index 86127d9..33423a5 100644 --- a/fs/gfs2/ops_export.c +++ b/fs/gfs2/ops_export.c @@ -35,7 +35,7 @@ static struct dentry *gfs2_decode_fh(struct super_block *sb, void *context) { struct gfs2_fh_obj fh_obj; - struct gfs2_inum *this, parent; + struct gfs2_inum_host *this, parent; if (fh_type != fh_len) return NULL; @@ -114,12 +114,12 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len, } struct get_name_filldir { - struct gfs2_inum inum; + struct gfs2_inum_host inum; char *name; }; static int get_name_filldir(void *opaque, const char *name, unsigned int length, - u64 offset, struct gfs2_inum *inum, + u64 offset, struct gfs2_inum_host *inum, unsigned int type) { struct get_name_filldir *gnfd = (struct get_name_filldir *)opaque; @@ -202,7 +202,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj) { struct gfs2_sbd *sdp = sb->s_fs_info; struct gfs2_fh_obj *fh_obj = (struct gfs2_fh_obj *)inum_obj; - struct gfs2_inum *inum = &fh_obj->this; + struct gfs2_inum_host *inum = &fh_obj->this; struct gfs2_holder i_gh, ri_gh, rgd_gh; struct gfs2_rgrpd *rgd; struct inode *inode; diff --git a/fs/gfs2/ops_export.h b/fs/gfs2/ops_export.h index 09aca50..f925a95 100644 --- a/fs/gfs2/ops_export.h +++ b/fs/gfs2/ops_export.h @@ -15,7 +15,7 @@ extern struct export_operations gfs2_export_ops; struct gfs2_fh_obj { - struct gfs2_inum this; + struct gfs2_inum_host this; __u32 imode; }; diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 3064f13..359965c 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -139,7 +139,7 @@ static loff_t gfs2_llseek(struct file *file, loff_t offset, int origin) */ static int filldir_func(void *opaque, const char *name, unsigned int length, - u64 offset, struct gfs2_inum *inum, + u64 offset, struct gfs2_inum_host *inum, unsigned int type) { struct filldir_reg *fdr = (struct filldir_reg *)opaque; diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 882873a..d14e139 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -237,7 +237,7 @@ fail: } static struct inode *gfs2_lookup_root(struct super_block *sb, - struct gfs2_inum *inum) + struct gfs2_inum_host *inum) { return gfs2_inode_lookup(sb, inum, DT_DIR); } @@ -246,7 +246,7 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) { struct super_block *sb = sdp->sd_vfs; struct gfs2_holder sb_gh; - struct gfs2_inum *inum; + struct gfs2_inum_host *inum; struct inode *inode; int error = 0; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 7dd5e4c..b16df6e 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -54,8 +54,13 @@ struct gfs2_inum { __be64 no_addr; }; -static inline int gfs2_inum_equal(const struct gfs2_inum *ino1, - const struct gfs2_inum *ino2) +struct gfs2_inum_host { + __u64 no_formal_ino; + __u64 no_addr; +}; + +static inline int gfs2_inum_equal(const struct gfs2_inum_host *ino1, + const struct gfs2_inum_host *ino2) { return ino1->no_formal_ino == ino2->no_formal_ino && ino1->no_addr == ino2->no_addr; @@ -143,8 +148,8 @@ struct gfs2_sb_host { __u32 sb_bsize; __u32 sb_bsize_shift; - struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ - struct gfs2_inum sb_root_dir; + struct gfs2_inum_host sb_master_dir; /* Was jindex dinode in gfs1 */ + struct gfs2_inum_host sb_root_dir; char sb_lockproto[GFS2_LOCKNAME_LEN]; char sb_locktable[GFS2_LOCKNAME_LEN]; @@ -313,7 +318,7 @@ struct gfs2_dinode { struct gfs2_dinode_host { struct gfs2_meta_header_host di_header; - struct gfs2_inum di_num; + struct gfs2_inum_host di_num; __u32 di_mode; /* mode of file */ __u32 di_uid; /* owner's user id */ @@ -503,8 +508,8 @@ struct gfs2_quota_change { #ifdef __KERNEL__ /* Translation functions */ -extern void gfs2_inum_in(struct gfs2_inum *no, const void *buf); -extern void gfs2_inum_out(const struct gfs2_inum *no, void *buf); +extern void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf); +extern void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf); extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf); extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf); extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf); -- cgit v0.10.2 From b5bc9e8b065dbcd4c675e8c158d6e524f221b8e1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 23:31:55 -0400 Subject: [GFS2] split and annotate gfs2_quota Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 32f592f..5db0737 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -144,7 +144,7 @@ void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf) memset(&str->rg_reserved, 0, sizeof(str->rg_reserved)); } -void gfs2_quota_in(struct gfs2_quota *qu, const void *buf) +void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf) { const struct gfs2_quota *str = buf; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index a3deae7..e3f5b8d 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -743,7 +743,7 @@ static int do_glock(struct gfs2_quota_data *qd, int force_refresh, struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); struct gfs2_holder i_gh; - struct gfs2_quota q; + struct gfs2_quota_host q; char buf[sizeof(struct gfs2_quota)]; struct file_ra_state ra_state; int error; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index b16df6e..431e03b 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -232,6 +232,12 @@ struct gfs2_quota { __u8 qu_reserved[64]; }; +struct gfs2_quota_host { + __u64 qu_limit; + __u64 qu_warn; + __u64 qu_value; +}; + /* * dinode structure */ @@ -515,8 +521,7 @@ extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf); extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf); extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf); extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf); -extern void gfs2_quota_in(struct gfs2_quota *qu, const void *buf); -extern void gfs2_quota_out(const struct gfs2_quota *qu, void *buf); +extern void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf); extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf); extern void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); -- cgit v0.10.2 From bd209cc017f231e8536550bdab1bf5da93c32798 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 23:43:19 -0400 Subject: [GFS2] split and annotate gfs2_statfs_change Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 20c9b4f..c0a8c3b 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -503,8 +503,8 @@ struct gfs2_sbd { spinlock_t sd_statfs_spin; struct mutex sd_statfs_mutex; - struct gfs2_statfs_change sd_statfs_master; - struct gfs2_statfs_change sd_statfs_local; + struct gfs2_statfs_change_host sd_statfs_master; + struct gfs2_statfs_change_host sd_statfs_local; unsigned long sd_statfs_sync_time; /* Resource group stuff */ diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 5db0737..84c59b1 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -279,7 +279,7 @@ void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf) str->ir_length = cpu_to_be64(ir->ir_length); } -void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf) +void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) { const struct gfs2_statfs_change *str = buf; @@ -288,7 +288,7 @@ void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf) sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); } -void gfs2_statfs_change_out(const struct gfs2_statfs_change *sc, void *buf) +void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) { struct gfs2_statfs_change *str = buf; diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c index b47d959..9c786d1 100644 --- a/fs/gfs2/ops_super.c +++ b/fs/gfs2/ops_super.c @@ -215,7 +215,7 @@ static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_inode->i_sb; struct gfs2_sbd *sdp = sb->s_fs_info; - struct gfs2_statfs_change sc; + struct gfs2_statfs_change_host sc; int error; if (gfs2_tune_get(sdp, gt_statfs_slow)) diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 0faf563..0ef8317 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -587,9 +587,9 @@ int gfs2_make_fs_ro(struct gfs2_sbd *sdp) int gfs2_statfs_init(struct gfs2_sbd *sdp) { struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); - struct gfs2_statfs_change *m_sc = &sdp->sd_statfs_master; + struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); - struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local; + struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; struct buffer_head *m_bh, *l_bh; struct gfs2_holder gh; int error; @@ -634,7 +634,7 @@ void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, s64 dinodes) { struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); - struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local; + struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; struct buffer_head *l_bh; int error; @@ -660,8 +660,8 @@ int gfs2_statfs_sync(struct gfs2_sbd *sdp) { struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); - struct gfs2_statfs_change *m_sc = &sdp->sd_statfs_master; - struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local; + struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; + struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; struct gfs2_holder gh; struct buffer_head *m_bh, *l_bh; int error; @@ -727,10 +727,10 @@ out: * Returns: errno */ -int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc) +int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) { - struct gfs2_statfs_change *m_sc = &sdp->sd_statfs_master; - struct gfs2_statfs_change *l_sc = &sdp->sd_statfs_local; + struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; + struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; spin_lock(&sdp->sd_statfs_spin); @@ -760,7 +760,7 @@ int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc) */ static int statfs_slow_fill(struct gfs2_rgrpd *rgd, - struct gfs2_statfs_change *sc) + struct gfs2_statfs_change_host *sc) { gfs2_rgrp_verify(rgd); sc->sc_total += rgd->rd_ri.ri_data; @@ -782,7 +782,7 @@ static int statfs_slow_fill(struct gfs2_rgrpd *rgd, * Returns: errno */ -int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc) +int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) { struct gfs2_holder ri_gh; struct gfs2_rgrpd *rgd_next; @@ -792,7 +792,7 @@ int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc) int done; int error = 0, err; - memset(sc, 0, sizeof(struct gfs2_statfs_change)); + memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); if (!gha) return -ENOMEM; diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h index ac95064..e590b2d 100644 --- a/fs/gfs2/super.h +++ b/fs/gfs2/super.h @@ -45,8 +45,8 @@ int gfs2_statfs_init(struct gfs2_sbd *sdp); void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, s64 dinodes); int gfs2_statfs_sync(struct gfs2_sbd *sdp); -int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc); -int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change *sc); +int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc); +int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc); int gfs2_freeze_fs(struct gfs2_sbd *sdp); void gfs2_unfreeze_fs(struct gfs2_sbd *sdp); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 431e03b..3ce3a47 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -497,6 +497,12 @@ struct gfs2_statfs_change { __be64 sc_dinodes; }; +struct gfs2_statfs_change_host { + __u64 sc_total; + __u64 sc_free; + __u64 sc_dinodes; +}; + /* * Quota change * Describes an allocation change for a particular @@ -529,8 +535,8 @@ extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); extern void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf); extern void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf); extern void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf); -extern void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf); -extern void gfs2_statfs_change_out(const struct gfs2_statfs_change *sc, void *buf); +extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf); +extern void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf); extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf); /* Printing functions */ -- cgit v0.10.2 From b62f963e1fdf838fed91faec21228d421a834f2d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 23:46:46 -0400 Subject: [GFS2] split and annotate gfs2_quota_change Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 84c59b1..2d1682d 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -297,7 +297,7 @@ void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); } -void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf) +void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf) { const struct gfs2_quota_change *str = buf; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index e3f5b8d..009d86c 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -1103,7 +1103,7 @@ int gfs2_quota_init(struct gfs2_sbd *sdp) for (y = 0; y < sdp->sd_qc_per_block && slot < sdp->sd_quota_slots; y++, slot++) { - struct gfs2_quota_change qc; + struct gfs2_quota_change_host qc; struct gfs2_quota_data *qd; gfs2_quota_change_in(&qc, bh->b_data + diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 3ce3a47..10a507d 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -517,6 +517,12 @@ struct gfs2_quota_change { __be32 qc_id; }; +struct gfs2_quota_change_host { + __u64 qc_change; + __u32 qc_flags; /* GFS2_QCF_... */ + __u32 qc_id; +}; + #ifdef __KERNEL__ /* Translation functions */ @@ -537,7 +543,7 @@ extern void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf) extern void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf); extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf); extern void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf); -extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf); +extern void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf); /* Printing functions */ -- cgit v0.10.2 From b44b84d765b02f813a67b96bf79e3b5d4d621631 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 14 Oct 2006 10:46:30 -0400 Subject: [GFS2] gfs2 misc endianness annotations Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 06e9a8c..51f6356 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -38,8 +38,8 @@ struct metapath { }; typedef int (*block_call_t) (struct gfs2_inode *ip, struct buffer_head *dibh, - struct buffer_head *bh, u64 *top, - u64 *bottom, unsigned int height, + struct buffer_head *bh, __be64 *top, + __be64 *bottom, unsigned int height, void *data); struct strip_mine { @@ -230,7 +230,7 @@ static int build_height(struct inode *inode, unsigned height) struct buffer_head *blocks[GFS2_MAX_META_HEIGHT]; struct gfs2_dinode *di; int error; - u64 *bp; + __be64 *bp; u64 bn; unsigned n; @@ -255,7 +255,7 @@ static int build_height(struct inode *inode, unsigned height) GFS2_FORMAT_IN); gfs2_buffer_clear_tail(blocks[n], sizeof(struct gfs2_meta_header)); - bp = (u64 *)(blocks[n]->b_data + + bp = (__be64 *)(blocks[n]->b_data + sizeof(struct gfs2_meta_header)); *bp = cpu_to_be64(blocks[n+1]->b_blocknr); brelse(blocks[n]); @@ -360,15 +360,15 @@ static void find_metapath(struct gfs2_inode *ip, u64 block, * metadata tree. */ -static inline u64 *metapointer(struct buffer_head *bh, int *boundary, +static inline __be64 *metapointer(struct buffer_head *bh, int *boundary, unsigned int height, const struct metapath *mp) { unsigned int head_size = (height > 0) ? sizeof(struct gfs2_meta_header) : sizeof(struct gfs2_dinode); - u64 *ptr; + __be64 *ptr; *boundary = 0; - ptr = ((u64 *)(bh->b_data + head_size)) + mp->mp_list[height]; - if (ptr + 1 == (u64 *)(bh->b_data + bh->b_size)) + ptr = ((__be64 *)(bh->b_data + head_size)) + mp->mp_list[height]; + if (ptr + 1 == (__be64 *)(bh->b_data + bh->b_size)) *boundary = 1; return ptr; } @@ -394,7 +394,7 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh, int *new, u64 *block) { int boundary; - u64 *ptr = metapointer(bh, &boundary, height, mp); + __be64 *ptr = metapointer(bh, &boundary, height, mp); if (*ptr) { *block = be64_to_cpu(*ptr); @@ -600,7 +600,7 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh, { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct buffer_head *bh = NULL; - u64 *top, *bottom; + __be64 *top, *bottom; u64 bn; int error; int mh_size = sizeof(struct gfs2_meta_header); @@ -611,17 +611,17 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh, return error; dibh = bh; - top = (u64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + mp->mp_list[0]; - bottom = (u64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + sdp->sd_diptrs; + top = (__be64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + mp->mp_list[0]; + bottom = (__be64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + sdp->sd_diptrs; } else { error = gfs2_meta_indirect_buffer(ip, height, block, 0, &bh); if (error) return error; - top = (u64 *)(bh->b_data + mh_size) + + top = (__be64 *)(bh->b_data + mh_size) + (first ? mp->mp_list[height] : 0); - bottom = (u64 *)(bh->b_data + mh_size) + sdp->sd_inptrs; + bottom = (__be64 *)(bh->b_data + mh_size) + sdp->sd_inptrs; } error = bc(ip, dibh, bh, top, bottom, height, data); @@ -660,7 +660,7 @@ out: */ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, - struct buffer_head *bh, u64 *top, u64 *bottom, + struct buffer_head *bh, __be64 *top, __be64 *bottom, unsigned int height, void *data) { struct strip_mine *sm = data; @@ -668,7 +668,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, struct gfs2_rgrp_list rlist; u64 bn, bstart; u32 blen; - u64 *p; + __be64 *p; unsigned int rg_blocks = 0; int metadata; unsigned int revokes = 0; diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index d67a376..59dc823 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -713,12 +713,12 @@ static int get_leaf(struct gfs2_inode *dip, u64 leaf_no, static int get_leaf_nr(struct gfs2_inode *dip, u32 index, u64 *leaf_out) { - u64 leaf_no; + __be64 leaf_no; int error; error = gfs2_dir_read_data(dip, (char *)&leaf_no, - index * sizeof(u64), - sizeof(u64), 0); + index * sizeof(__be64), + sizeof(__be64), 0); if (error != sizeof(u64)) return (error < 0) ? error : -EIO; @@ -837,7 +837,8 @@ static int dir_make_exhash(struct inode *inode) struct gfs2_leaf *leaf; int y; u32 x; - u64 *lp, bn; + __be64 *lp; + u64 bn; int error; error = gfs2_meta_inode_buffer(dip, &dibh); @@ -893,7 +894,7 @@ static int dir_make_exhash(struct inode *inode) gfs2_trans_add_bh(dip->i_gl, dibh, 1); gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); - lp = (u64 *)(dibh->b_data + sizeof(struct gfs2_dinode)); + lp = (__be64 *)(dibh->b_data + sizeof(struct gfs2_dinode)); for (x = sdp->sd_hash_ptrs; x--; lp++) *lp = cpu_to_be64(bn); @@ -929,7 +930,8 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) struct gfs2_leaf *nleaf, *oleaf; struct gfs2_dirent *dent = NULL, *prev = NULL, *next = NULL, *new; u32 start, len, half_len, divider; - u64 bn, *lp, leaf_no; + u64 bn, leaf_no; + __be64 *lp; u32 index; int x, moved = 0; int error; @@ -974,7 +976,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) /* Change the pointers. Don't bother distinguishing stuffed from non-stuffed. This code is complicated enough already. */ - lp = kmalloc(half_len * sizeof(u64), GFP_NOFS | __GFP_NOFAIL); + lp = kmalloc(half_len * sizeof(__be64), GFP_NOFS | __GFP_NOFAIL); /* Change the pointers */ for (x = 0; x < half_len; x++) lp[x] = cpu_to_be64(bn); @@ -1341,7 +1343,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque, u32 hsize, len = 0; u32 ht_offset, lp_offset, ht_offset_cur = -1; u32 hash, index; - u64 *lp; + __be64 *lp; int copied = 0; int error = 0; unsigned depth = 0; @@ -1365,7 +1367,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque, if (ht_offset_cur != ht_offset) { error = gfs2_dir_read_data(dip, (char *)lp, - ht_offset * sizeof(u64), + ht_offset * sizeof(__be64), sdp->sd_hash_bsize, 1); if (error != sdp->sd_hash_bsize) { if (error >= 0) @@ -1715,7 +1717,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data) u32 hsize, len; u32 ht_offset, lp_offset, ht_offset_cur = -1; u32 index = 0; - u64 *lp; + __be64 *lp; u64 leaf_no; int error = 0; @@ -1735,7 +1737,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data) if (ht_offset_cur != ht_offset) { error = gfs2_dir_read_data(dip, (char *)lp, - ht_offset * sizeof(u64), + ht_offset * sizeof(__be64), sdp->sd_hash_bsize, 1); if (error != sdp->sd_hash_bsize) { if (error >= 0) diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index a65a4cc..518f0c0 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -112,7 +112,7 @@ fail: static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data) { struct buffer_head *bh, *eabh; - u64 *eablk, *end; + __be64 *eablk, *end; int error; error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT, &bh); @@ -129,7 +129,7 @@ static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data) goto out; } - eablk = (u64 *)(bh->b_data + sizeof(struct gfs2_meta_header)); + eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header)); end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs; for (; eablk < end; eablk++) { @@ -224,7 +224,8 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, struct gfs2_rgrpd *rgd; struct gfs2_holder rg_gh; struct buffer_head *dibh; - u64 *dataptrs, bn = 0; + __be64 *dataptrs; + u64 bn = 0; u64 bstart = 0; unsigned int blen = 0; unsigned int blks = 0; @@ -444,7 +445,7 @@ static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea, struct buffer_head **bh; unsigned int amount = GFS2_EA_DATA_LEN(ea); unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); - u64 *dataptrs = GFS2_EA2DATAPTRS(ea); + __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); unsigned int x; int error = 0; @@ -629,7 +630,7 @@ static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, ea->ea_num_ptrs = 0; memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len); } else { - u64 *dataptr = GFS2_EA2DATAPTRS(ea); + __be64 *dataptr = GFS2_EA2DATAPTRS(ea); const char *data = er->er_data; unsigned int data_len = er->er_data_len; unsigned int copy; @@ -931,12 +932,12 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct buffer_head *indbh, *newbh; - u64 *eablk; + __be64 *eablk; int error; int mh_size = sizeof(struct gfs2_meta_header); if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) { - u64 *end; + __be64 *end; error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr, DIO_WAIT, &indbh); @@ -948,7 +949,7 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, goto out; } - eablk = (u64 *)(indbh->b_data + mh_size); + eablk = (__be64 *)(indbh->b_data + mh_size); end = eablk + sdp->sd_inptrs; for (; eablk < end; eablk++) @@ -971,7 +972,7 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN); gfs2_buffer_clear_tail(indbh, mh_size); - eablk = (u64 *)(indbh->b_data + mh_size); + eablk = (__be64 *)(indbh->b_data + mh_size); *eablk = cpu_to_be64(ip->i_di.di_eattr); ip->i_di.di_eattr = blk; ip->i_di.di_flags |= GFS2_DIF_EA_INDIRECT; @@ -1202,7 +1203,7 @@ static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip, struct buffer_head **bh; unsigned int amount = GFS2_EA_DATA_LEN(ea); unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); - u64 *dataptrs = GFS2_EA2DATAPTRS(ea); + __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); unsigned int x; int error; @@ -1300,7 +1301,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip) struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct gfs2_rgrp_list rlist; struct buffer_head *indbh, *dibh; - u64 *eablk, *end; + __be64 *eablk, *end; unsigned int rg_blocks = 0; u64 bstart = 0; unsigned int blen = 0; @@ -1319,7 +1320,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip) goto out; } - eablk = (u64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); + eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); end = eablk + sdp->sd_inptrs; for (; eablk < end; eablk++) { @@ -1363,7 +1364,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip) gfs2_trans_add_bh(ip->i_gl, indbh, 1); - eablk = (u64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); + eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); bstart = 0; blen = 0; diff --git a/fs/gfs2/eattr.h b/fs/gfs2/eattr.h index ffa6594..c82dbe0 100644 --- a/fs/gfs2/eattr.h +++ b/fs/gfs2/eattr.h @@ -19,7 +19,7 @@ struct iattr; #define GFS2_EA_SIZE(ea) \ ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \ ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \ - (sizeof(u64) * (ea)->ea_num_ptrs)), 8) + (sizeof(__be64) * (ea)->ea_num_ptrs)), 8) #define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs) #define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST) @@ -29,13 +29,13 @@ ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8) #define GFS2_EAREQ_SIZE_UNSTUFFED(sdp, er) \ ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + \ - sizeof(u64) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8) + sizeof(__be64) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8) #define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1)) #define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len) #define GFS2_EA2DATAPTRS(ea) \ -((u64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) +((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) #define GFS2_EA2NEXT(ea) \ ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea))) diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index dadd1f3..fb96930 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -500,21 +500,22 @@ static int pick_formal_ino_2(struct gfs2_sbd *sdp, u64 *formal_ino) if (!ir.ir_length) { struct buffer_head *m_bh; u64 x, y; + __be64 z; error = gfs2_meta_inode_buffer(m_ip, &m_bh); if (error) goto out_brelse; - x = *(u64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)); - x = y = be64_to_cpu(x); + z = *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)); + x = y = be64_to_cpu(z); ir.ir_start = x; ir.ir_length = GFS2_INUM_QUANTUM; x += GFS2_INUM_QUANTUM; if (x < y) gfs2_consist_inode(m_ip); - x = cpu_to_be64(x); + z = cpu_to_be64(x); gfs2_trans_add_bh(m_ip->i_gl, m_bh, 1); - *(u64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)) = x; + *(__be64 *)(m_bh->b_data + sizeof(struct gfs2_dinode)) = z; brelse(m_bh); } diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c index 33423a5..b4e7b87 100644 --- a/fs/gfs2/ops_export.c +++ b/fs/gfs2/ops_export.c @@ -27,13 +27,14 @@ #include "util.h" static struct dentry *gfs2_decode_fh(struct super_block *sb, - __u32 *fh, + __u32 *p, int fh_len, int fh_type, int (*acceptable)(void *context, struct dentry *dentry), void *context) { + __be32 *fh = (__force __be32 *)p; struct gfs2_fh_obj fh_obj; struct gfs2_inum_host *this, parent; @@ -65,9 +66,10 @@ static struct dentry *gfs2_decode_fh(struct super_block *sb, acceptable, context); } -static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len, +static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len, int connectable) { + __be32 *fh = (__force __be32 *)p; struct inode *inode = dentry->d_inode; struct super_block *sb = inode->i_sb; struct gfs2_inode *ip = GFS2_I(inode); @@ -76,14 +78,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len, (connectable && *len < GFS2_LARGE_FH_SIZE)) return 255; - fh[0] = ip->i_num.no_formal_ino >> 32; - fh[0] = cpu_to_be32(fh[0]); - fh[1] = ip->i_num.no_formal_ino & 0xFFFFFFFF; - fh[1] = cpu_to_be32(fh[1]); - fh[2] = ip->i_num.no_addr >> 32; - fh[2] = cpu_to_be32(fh[2]); - fh[3] = ip->i_num.no_addr & 0xFFFFFFFF; - fh[3] = cpu_to_be32(fh[3]); + fh[0] = cpu_to_be32(ip->i_num.no_formal_ino >> 32); + fh[1] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF); + fh[2] = cpu_to_be32(ip->i_num.no_addr >> 32); + fh[3] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF); *len = GFS2_SMALL_FH_SIZE; if (!connectable || inode == sb->s_root->d_inode) @@ -95,14 +93,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *fh, int *len, igrab(inode); spin_unlock(&dentry->d_lock); - fh[4] = ip->i_num.no_formal_ino >> 32; - fh[4] = cpu_to_be32(fh[4]); - fh[5] = ip->i_num.no_formal_ino & 0xFFFFFFFF; - fh[5] = cpu_to_be32(fh[5]); - fh[6] = ip->i_num.no_addr >> 32; - fh[6] = cpu_to_be32(fh[6]); - fh[7] = ip->i_num.no_addr & 0xFFFFFFFF; - fh[7] = cpu_to_be32(fh[7]); + fh[4] = cpu_to_be32(ip->i_num.no_formal_ino >> 32); + fh[5] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF); + fh[6] = cpu_to_be32(ip->i_num.no_addr >> 32); + fh[7] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF); fh[8] = cpu_to_be32(inode->i_mode); fh[9] = 0; /* pad to double word */ diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 009d86c..5d00e9b 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -539,8 +539,7 @@ static void do_qc(struct gfs2_quota_data *qd, s64 change) qc->qc_id = cpu_to_be32(qd->qd_id); } - x = qc->qc_change; - x = be64_to_cpu(x) + change; + x = be64_to_cpu(qc->qc_change) + change; qc->qc_change = cpu_to_be64(x); spin_lock(&sdp->sd_quota_spin); diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h index 76a5089..ca8667c 100644 --- a/fs/gfs2/util.h +++ b/fs/gfs2/util.h @@ -83,8 +83,7 @@ static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp, char *file, unsigned int line) { struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data; - u32 magic = mh->mh_magic; - magic = be32_to_cpu(magic); + u32 magic = be32_to_cpu(mh->mh_magic); if (unlikely(magic != GFS2_MAGIC)) return gfs2_meta_check_ii(sdp, bh, "magic number", function, file, line); @@ -107,9 +106,8 @@ static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp, char *file, unsigned int line) { struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data; - u32 magic = mh->mh_magic; + u32 magic = be32_to_cpu(mh->mh_magic); u16 t = be32_to_cpu(mh->mh_type); - magic = be32_to_cpu(magic); if (unlikely(magic != GFS2_MAGIC)) return gfs2_meta_check_ii(sdp, bh, "magic number", function, file, line); -- cgit v0.10.2 From 9c9ab3d5414653bfe5e5b9f4dfdaab0c6ab17196 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 13 Oct 2006 23:49:23 -0400 Subject: [GFS2] gfs2 __user misannotation fix Signed-off-by: Al Viro Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 359965c..2fc8868 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -71,7 +71,7 @@ static int gfs2_read_actor(read_descriptor_t *desc, struct page *page, size = count; kaddr = kmap(page); - memcpy(desc->arg.buf, kaddr + offset, size); + memcpy(desc->arg.data, kaddr + offset, size); kunmap(page); desc->count = count - size; @@ -86,7 +86,7 @@ int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state, struct inode *inode = &ip->i_inode; read_descriptor_t desc; desc.written = 0; - desc.arg.buf = buf; + desc.arg.data = buf; desc.count = size; desc.error = 0; do_generic_mapping_read(inode->i_mapping, ra_state, -- cgit v0.10.2 From 539e5d6b7ae8612c0393fe940d2da5b591318d3d Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 31 Oct 2006 15:07:05 -0500 Subject: [GFS2] Change argument of gfs2_dinode_out Everywhere this was called, a struct gfs2_inode was available, but despite that, it was always called with a struct gfs2_dinode as an argument. By making this change it paves the way to start eliminating fields duplicated between the kernel's struct inode and the struct gfs2_dinode. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 5f959b8..906e403 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -201,7 +201,7 @@ static int munge_mode(struct gfs2_inode *ip, mode_t mode) (ip->i_di.di_mode & S_IFMT) == (mode & S_IFMT)); ip->i_di.di_mode = mode; gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 51f6356..8c092ab 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -498,7 +498,7 @@ static int gfs2_block_pointers(struct inode *inode, u64 lblock, int create, error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } set_buffer_new(bh_map); @@ -780,7 +780,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); up_write(&ip->i_rw_mutex); @@ -860,7 +860,7 @@ static int do_grow(struct gfs2_inode *ip, u64 size) goto out_end_trans; gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); out_end_trans: @@ -970,7 +970,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size) ip->i_di.di_size = size; ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + size); error = 1; @@ -983,7 +983,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size) ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); ip->i_di.di_flags |= GFS2_DIF_TRUNC_IN_PROG; gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); } } @@ -1057,7 +1057,7 @@ static int trunc_end(struct gfs2_inode *ip) ip->i_di.di_flags &= ~GFS2_DIF_TRUNC_IN_PROG; gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); out: diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 59dc823..0742761 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -132,7 +132,7 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf, if (ip->i_di.di_size < offset + size) ip->i_di.di_size = offset + size; ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -232,7 +232,7 @@ out: ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); return copied; @@ -907,7 +907,7 @@ static int dir_make_exhash(struct inode *inode) for (x = sdp->sd_hash_ptrs, y = -1; x; x >>= 1, y++) ; dip->i_di.di_depth = y; - gfs2_dinode_out(&dip->i_di, dibh->b_data); + gfs2_dinode_out(dip, dibh->b_data); brelse(dibh); @@ -1039,7 +1039,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) error = gfs2_meta_inode_buffer(dip, &dibh); if (!gfs2_assert_withdraw(GFS2_SB(&dip->i_inode), !error)) { dip->i_di.di_blocks++; - gfs2_dinode_out(&dip->i_di, dibh->b_data); + gfs2_dinode_out(dip, dibh->b_data); brelse(dibh); } @@ -1119,7 +1119,7 @@ static int dir_double_exhash(struct gfs2_inode *dip) error = gfs2_meta_inode_buffer(dip, &dibh); if (!gfs2_assert_withdraw(sdp, !error)) { dip->i_di.di_depth++; - gfs2_dinode_out(&dip->i_di, dibh->b_data); + gfs2_dinode_out(dip, dibh->b_data); brelse(dibh); } @@ -1517,7 +1517,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name) return error; gfs2_trans_add_bh(ip->i_gl, bh, 1); ip->i_di.di_blocks++; - gfs2_dinode_out(&ip->i_di, bh->b_data); + gfs2_dinode_out(ip, bh->b_data); brelse(bh); return 0; } @@ -1561,7 +1561,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name, gfs2_trans_add_bh(ip->i_gl, bh, 1); ip->i_di.di_entries++; ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); - gfs2_dinode_out(&ip->i_di, bh->b_data); + gfs2_dinode_out(ip, bh->b_data); brelse(bh); error = 0; break; @@ -1647,7 +1647,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name) gfs2_trans_add_bh(dip->i_gl, bh, 1); dip->i_di.di_entries--; dip->i_di.di_mtime = dip->i_di.di_ctime = get_seconds(); - gfs2_dinode_out(&dip->i_di, bh->b_data); + gfs2_dinode_out(dip, bh->b_data); brelse(bh); mark_inode_dirty(&dip->i_inode); @@ -1695,7 +1695,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, } dip->i_di.di_mtime = dip->i_di.di_ctime = get_seconds(); - gfs2_dinode_out(&dip->i_di, bh->b_data); + gfs2_dinode_out(dip, bh->b_data); brelse(bh); return 0; } @@ -1875,7 +1875,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, goto out_end_trans; gfs2_trans_add_bh(dip->i_gl, dibh, 1); - gfs2_dinode_out(&dip->i_di, dibh->b_data); + gfs2_dinode_out(dip, dibh->b_data); brelse(dibh); out_end_trans: diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index 518f0c0..9b7bb56 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -302,7 +302,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, if (!error) { ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -717,7 +717,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, } ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -852,7 +852,7 @@ static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, } ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); out: gfs2_trans_end(GFS2_SB(&ip->i_inode)); @@ -1132,7 +1132,7 @@ static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) if (!error) { ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -1287,7 +1287,7 @@ int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el, gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error); gfs2_inode_attr_out(ip); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -1397,7 +1397,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip) error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -1446,7 +1446,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip) error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index fb96930..b861ddb 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -338,7 +338,7 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) ip->i_inode.i_nlink = nlink; gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); mark_inode_dirty(&ip->i_inode); @@ -792,7 +792,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, goto fail_end_trans; ip->i_di.di_nlink = 1; gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); return 0; @@ -1349,7 +1349,7 @@ __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr) gfs2_inode_attr_out(ip); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } return error; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 2d1682d..2c50fa0 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -15,6 +15,8 @@ #include "gfs2.h" #include +#include +#include "incore.h" #define pv(struct, member, fmt) printk(KERN_INFO " "#member" = "fmt"\n", \ struct->member); @@ -187,8 +189,9 @@ void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf) } -void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf) +void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) { + const struct gfs2_dinode_host *di = &ip->i_di; struct gfs2_dinode *str = buf; gfs2_meta_header_out(&di->di_header, buf); diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 2fc8868..7ea4175 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -336,7 +336,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) goto out_trans_end; gfs2_trans_add_bh(ip->i_gl, bh, 1); ip->i_di.di_flags = new_flags; - gfs2_dinode_out(&ip->i_di, bh->b_data); + gfs2_dinode_out(ip, bh->b_data); brelse(bh); out_trans_end: gfs2_trans_end(sdp); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index ef6e5ed..bd26885 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -339,7 +339,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, error = gfs2_meta_inode_buffer(ip, &dibh); if (!gfs2_assert_withdraw(sdp, !error)) { - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, size); brelse(dibh); @@ -414,7 +414,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) gfs2_inum_out(&dip->i_num, &dent->de_inum); dent->de_type = cpu_to_be16(DT_DIR); - gfs2_dinode_out(&ip->i_di, di); + gfs2_dinode_out(ip, di); brelse(dibh); } @@ -541,7 +541,7 @@ static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, error = gfs2_meta_inode_buffer(ip, &dibh); if (!gfs2_assert_withdraw(sdp, !error)) { - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -762,7 +762,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, goto out_end_trans; ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); } @@ -949,7 +949,7 @@ static int setattr_chown(struct inode *inode, struct iattr *attr) gfs2_inode_attr_out(ip); gfs2_trans_add_bh(ip->i_gl, dibh, 1); - gfs2_dinode_out(&ip->i_di, dibh->b_data); + gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 10a507d..550effa 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -535,7 +535,8 @@ extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf); extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf); extern void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf); extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf); -extern void gfs2_dinode_out(const struct gfs2_dinode_host *di, void *buf); +struct gfs2_inode; +extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); extern void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf); -- cgit v0.10.2 From 891ea14712da68e282de8583e5fa14f0d3f3731e Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 31 Oct 2006 15:22:10 -0500 Subject: [GFS2] Change argument to gfs2_dinode_in This is a preliminary patch to enable the removal of fields in gfs2_dinode_host which are duplicated in struct inode. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index b861ddb..9875e93 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -229,7 +229,7 @@ int gfs2_inode_refresh(struct gfs2_inode *ip) return -EIO; } - gfs2_dinode_in(&ip->i_di, dibh->b_data); + gfs2_dinode_in(ip, dibh->b_data); brelse(dibh); diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 2c50fa0..edf8756 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -155,8 +155,9 @@ void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf) qu->qu_value = be64_to_cpu(str->qu_value); } -void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf) +void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) { + struct gfs2_dinode_host *di = &ip->i_di; const struct gfs2_dinode *str = buf; gfs2_meta_header_in(&di->di_header, buf); @@ -186,7 +187,6 @@ void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf) di->di_entries = be32_to_cpu(str->di_entries); di->di_eattr = be64_to_cpu(str->di_eattr); - } void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 550effa..08d8240 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -534,8 +534,8 @@ extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf); extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf); extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf); extern void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf); -extern void gfs2_dinode_in(struct gfs2_dinode_host *di, const void *buf); struct gfs2_inode; +extern void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf); extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); -- cgit v0.10.2 From ea744d01c6a5acf1f6171b4c6e1658a742063613 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 31 Oct 2006 15:28:00 -0500 Subject: [GFS2] Move gfs2_dinode_in to inode.c gfs2_dinode_in() is only ever called from one place, so move it to that place (in inode.c) and make it static. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 9875e93..b39cfcf 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -208,6 +208,40 @@ fail: return ERR_PTR(error); } +static void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) +{ + struct gfs2_dinode_host *di = &ip->i_di; + const struct gfs2_dinode *str = buf; + + gfs2_meta_header_in(&di->di_header, buf); + gfs2_inum_in(&di->di_num, &str->di_num); + + di->di_mode = be32_to_cpu(str->di_mode); + di->di_uid = be32_to_cpu(str->di_uid); + di->di_gid = be32_to_cpu(str->di_gid); + di->di_nlink = be32_to_cpu(str->di_nlink); + di->di_size = be64_to_cpu(str->di_size); + di->di_blocks = be64_to_cpu(str->di_blocks); + di->di_atime = be64_to_cpu(str->di_atime); + di->di_mtime = be64_to_cpu(str->di_mtime); + di->di_ctime = be64_to_cpu(str->di_ctime); + di->di_major = be32_to_cpu(str->di_major); + di->di_minor = be32_to_cpu(str->di_minor); + + di->di_goal_meta = be64_to_cpu(str->di_goal_meta); + di->di_goal_data = be64_to_cpu(str->di_goal_data); + di->di_generation = be64_to_cpu(str->di_generation); + + di->di_flags = be32_to_cpu(str->di_flags); + di->di_payload_format = be32_to_cpu(str->di_payload_format); + di->di_height = be16_to_cpu(str->di_height); + + di->di_depth = be16_to_cpu(str->di_depth); + di->di_entries = be32_to_cpu(str->di_entries); + + di->di_eattr = be64_to_cpu(str->di_eattr); +} + /** * gfs2_inode_refresh - Refresh the incore copy of the dinode * @ip: The GFS2 inode diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index edf8756..062a44f 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -56,7 +56,7 @@ static void gfs2_inum_print(const struct gfs2_inum_host *no) printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)no->no_addr); } -static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf) +void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf) { const struct gfs2_meta_header *str = buf; @@ -155,40 +155,6 @@ void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf) qu->qu_value = be64_to_cpu(str->qu_value); } -void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) -{ - struct gfs2_dinode_host *di = &ip->i_di; - const struct gfs2_dinode *str = buf; - - gfs2_meta_header_in(&di->di_header, buf); - gfs2_inum_in(&di->di_num, &str->di_num); - - di->di_mode = be32_to_cpu(str->di_mode); - di->di_uid = be32_to_cpu(str->di_uid); - di->di_gid = be32_to_cpu(str->di_gid); - di->di_nlink = be32_to_cpu(str->di_nlink); - di->di_size = be64_to_cpu(str->di_size); - di->di_blocks = be64_to_cpu(str->di_blocks); - di->di_atime = be64_to_cpu(str->di_atime); - di->di_mtime = be64_to_cpu(str->di_mtime); - di->di_ctime = be64_to_cpu(str->di_ctime); - di->di_major = be32_to_cpu(str->di_major); - di->di_minor = be32_to_cpu(str->di_minor); - - di->di_goal_meta = be64_to_cpu(str->di_goal_meta); - di->di_goal_data = be64_to_cpu(str->di_goal_data); - di->di_generation = be64_to_cpu(str->di_generation); - - di->di_flags = be32_to_cpu(str->di_flags); - di->di_payload_format = be32_to_cpu(str->di_payload_format); - di->di_height = be16_to_cpu(str->di_height); - - di->di_depth = be16_to_cpu(str->di_depth); - di->di_entries = be32_to_cpu(str->di_entries); - - di->di_eattr = be64_to_cpu(str->di_eattr); -} - void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) { const struct gfs2_dinode_host *di = &ip->i_di; diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 08d8240..4fc297a 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -528,6 +528,7 @@ struct gfs2_quota_change_host { extern void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf); extern void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf); +extern void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf); extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf); extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf); extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf); @@ -535,7 +536,6 @@ extern void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf); extern void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf); extern void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf); struct gfs2_inode; -extern void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf); extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf); extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf); extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf); -- cgit v0.10.2 From 4cc14f0b88bf3e0b508143e091eb5a8dff3e3b9c Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 31 Oct 2006 19:00:24 -0500 Subject: [GFS2] Change argument to gfs2_dinode_print Change argument for gfs2_dinode_print in order to prepare for removal of duplicate fields between struct inode and struct gfs2_dinode_host. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index b39cfcf..4c5d286 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -269,7 +269,7 @@ int gfs2_inode_refresh(struct gfs2_inode *ip) if (ip->i_num.no_addr != ip->i_di.di_num.no_addr) { if (gfs2_consist_inode(ip)) - gfs2_dinode_print(&ip->i_di); + gfs2_dinode_print(ip); return -EIO; } if (ip->i_num.no_formal_ino != ip->i_di.di_num.no_formal_ino) @@ -289,7 +289,7 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip) if (ip->i_di.di_blocks != 1) { if (gfs2_consist_inode(ip)) - gfs2_dinode_print(&ip->i_di); + gfs2_dinode_print(ip); return -EIO; } @@ -359,7 +359,7 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) bigger than the old one, we must have underflowed. */ if (diff < 0 && nlink > ip->i_di.di_nlink) { if (gfs2_consist_inode(ip)) - gfs2_dinode_print(&ip->i_di); + gfs2_dinode_print(ip); return -EIO; } @@ -1010,7 +1010,7 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, if (ip->i_di.di_entries != 2) { if (gfs2_consist_inode(ip)) - gfs2_dinode_print(&ip->i_di); + gfs2_dinode_print(ip); return -EIO; } diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 062a44f..77bed44 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -190,8 +190,10 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) } -void gfs2_dinode_print(const struct gfs2_dinode_host *di) +void gfs2_dinode_print(const struct gfs2_inode *ip) { + const struct gfs2_dinode_host *di = &ip->i_di; + gfs2_meta_header_print(&di->di_header); gfs2_inum_print(&di->di_num); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index bd26885..b2c2fe6 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -467,7 +467,7 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry) if (ip->i_di.di_entries < 2) { if (gfs2_consist_inode(ip)) - gfs2_dinode_print(&ip->i_di); + gfs2_dinode_print(ip); error = -EIO; goto out_gunlock; } @@ -640,7 +640,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (S_ISDIR(nip->i_di.di_mode)) { if (nip->i_di.di_entries < 2) { if (gfs2_consist_inode(nip)) - gfs2_dinode_print(&nip->i_di); + gfs2_dinode_print(nip); error = -EIO; goto out_gunlock; } diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 4fc297a..cf4c655 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -549,7 +549,7 @@ extern void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void * /* Printing functions */ extern void gfs2_rindex_print(const struct gfs2_rindex_host *ri); -extern void gfs2_dinode_print(const struct gfs2_dinode_host *di); +extern void gfs2_dinode_print(const struct gfs2_inode *ip); #endif /* __KERNEL__ */ -- cgit v0.10.2 From af339c0241d0dd3b35f9097b4f4999bb22ffe502 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 10:34:15 -0500 Subject: [GFS2] Shrink gfs2_inode (1) - di_header/di_num The metadata header doesn't need to be stored in the incore struct gfs2_inode since its constant, and this patch removes it. Also, there is already a field for the inode's number in the struct gfs2_inode, so we don't need one in struct gfs2_dinode_host as well. This saves 28 bytes of space in the struct gfs2_inode. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 4c5d286..7ba05fc 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -208,13 +208,18 @@ fail: return ERR_PTR(error); } -static void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) +static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) { struct gfs2_dinode_host *di = &ip->i_di; const struct gfs2_dinode *str = buf; - gfs2_meta_header_in(&di->di_header, buf); - gfs2_inum_in(&di->di_num, &str->di_num); + if (ip->i_num.no_addr != be64_to_cpu(str->di_num.no_addr)) { + if (gfs2_consist_inode(ip)) + gfs2_dinode_print(ip); + return -EIO; + } + if (ip->i_num.no_formal_ino != be64_to_cpu(str->di_num.no_formal_ino)) + return -ESTALE; di->di_mode = be32_to_cpu(str->di_mode); di->di_uid = be32_to_cpu(str->di_uid); @@ -240,6 +245,7 @@ static void gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) di->di_entries = be32_to_cpu(str->di_entries); di->di_eattr = be64_to_cpu(str->di_eattr); + return 0; } /** @@ -263,21 +269,12 @@ int gfs2_inode_refresh(struct gfs2_inode *ip) return -EIO; } - gfs2_dinode_in(ip, dibh->b_data); + error = gfs2_dinode_in(ip, dibh->b_data); brelse(dibh); - - if (ip->i_num.no_addr != ip->i_di.di_num.no_addr) { - if (gfs2_consist_inode(ip)) - gfs2_dinode_print(ip); - return -EIO; - } - if (ip->i_num.no_formal_ino != ip->i_di.di_num.no_formal_ino) - return -ESTALE; - ip->i_vn = ip->i_gl->gl_vn; - return 0; + return error; } int gfs2_dinode_dealloc(struct gfs2_inode *ip) diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 77bed44..4bc590e 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -56,7 +56,7 @@ static void gfs2_inum_print(const struct gfs2_inum_host *no) printk(KERN_INFO " no_addr = %llu\n", (unsigned long long)no->no_addr); } -void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf) +static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf) { const struct gfs2_meta_header *str = buf; @@ -74,13 +74,6 @@ static void gfs2_meta_header_out(const struct gfs2_meta_header_host *mh, void *b str->mh_format = cpu_to_be32(mh->mh_format); } -static void gfs2_meta_header_print(const struct gfs2_meta_header_host *mh) -{ - pv(mh, mh_magic, "0x%.8X"); - pv(mh, mh_type, "%u"); - pv(mh, mh_format, "%u"); -} - void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) { const struct gfs2_sb *str = buf; @@ -160,8 +153,13 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) const struct gfs2_dinode_host *di = &ip->i_di; struct gfs2_dinode *str = buf; - gfs2_meta_header_out(&di->di_header, buf); - gfs2_inum_out(&di->di_num, (char *)&str->di_num); + str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); + str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); + str->di_header.__pad0 = 0; + str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); + str->di_header.__pad1 = 0; + + gfs2_inum_out(&ip->i_num, &str->di_num); str->di_mode = cpu_to_be32(di->di_mode); str->di_uid = cpu_to_be32(di->di_uid); @@ -187,15 +185,13 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_entries = cpu_to_be32(di->di_entries); str->di_eattr = cpu_to_be64(di->di_eattr); - } void gfs2_dinode_print(const struct gfs2_inode *ip) { const struct gfs2_dinode_host *di = &ip->i_di; - gfs2_meta_header_print(&di->di_header); - gfs2_inum_print(&di->di_num); + gfs2_inum_print(&ip->i_num); pv(di, di_mode, "0%o"); pv(di, di_uid, "%u"); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index cf4c655..c0e76fc 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -322,10 +322,6 @@ struct gfs2_dinode { }; struct gfs2_dinode_host { - struct gfs2_meta_header_host di_header; - - struct gfs2_inum_host di_num; - __u32 di_mode; /* mode of file */ __u32 di_uid; /* owner's user id */ __u32 di_gid; /* owner's group id */ @@ -528,7 +524,6 @@ struct gfs2_quota_change_host { extern void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf); extern void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf); -extern void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf); extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf); extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf); extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf); -- cgit v0.10.2 From e7f14f4d094ea1a9ce1953375f5bc1500c760c79 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 31 Oct 2006 21:45:08 -0500 Subject: [GFS2] Shrink gfs2_inode (2) - di_major/di_minor This removes the device numbers from this structure by using inode->i_rdev instead. It also cleans up the code in gfs2_mknod. It results in shrinking the gfs2_inode by 8 bytes. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 7ba05fc..a995919 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -51,17 +51,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) struct gfs2_dinode_host *di = &ip->i_di; inode->i_ino = ip->i_num.no_addr; - - switch (di->di_mode & S_IFMT) { - case S_IFBLK: - case S_IFCHR: - inode->i_rdev = MKDEV(di->di_major, di->di_minor); - break; - default: - inode->i_rdev = 0; - break; - }; - inode->i_mode = di->di_mode; inode->i_nlink = di->di_nlink; inode->i_uid = di->di_uid; @@ -222,6 +211,15 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) return -ESTALE; di->di_mode = be32_to_cpu(str->di_mode); + ip->i_inode.i_rdev = 0; + switch (di->di_mode & S_IFMT) { + case S_IFBLK: + case S_IFCHR: + ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), + be32_to_cpu(str->di_minor)); + break; + }; + di->di_uid = be32_to_cpu(str->di_uid); di->di_gid = be32_to_cpu(str->di_gid); di->di_nlink = be32_to_cpu(str->di_nlink); @@ -230,8 +228,6 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) di->di_atime = be64_to_cpu(str->di_atime); di->di_mtime = be64_to_cpu(str->di_mtime); di->di_ctime = be64_to_cpu(str->di_ctime); - di->di_major = be32_to_cpu(str->di_major); - di->di_minor = be32_to_cpu(str->di_minor); di->di_goal_meta = be64_to_cpu(str->di_goal_meta); di->di_goal_data = be64_to_cpu(str->di_goal_data); @@ -270,7 +266,6 @@ int gfs2_inode_refresh(struct gfs2_inode *ip) } error = gfs2_dinode_in(ip, dibh->b_data); - brelse(dibh); ip->i_vn = ip->i_gl->gl_vn; @@ -684,7 +679,7 @@ out: static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, const struct gfs2_inum_host *inum, unsigned int mode, unsigned int uid, unsigned int gid, - const u64 *generation) + const u64 *generation, dev_t dev) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct gfs2_dinode *di; @@ -705,7 +700,8 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, di->di_size = cpu_to_be64(0); di->di_blocks = cpu_to_be64(1); di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(get_seconds()); - di->di_major = di->di_minor = cpu_to_be32(0); + di->di_major = cpu_to_be32(MAJOR(dev)); + di->di_minor = cpu_to_be32(MINOR(dev)); di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr); di->di_generation = cpu_to_be64(*generation); di->di_flags = cpu_to_be32(0); @@ -740,7 +736,7 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, unsigned int mode, const struct gfs2_inum_host *inum, - const u64 *generation) + const u64 *generation, dev_t dev) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); unsigned int uid, gid; @@ -761,7 +757,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, if (error) goto out_quota; - init_dinode(dip, gl, inum, mode, uid, gid, generation); + init_dinode(dip, gl, inum, mode, uid, gid, generation, dev); gfs2_quota_change(dip, +1, uid, gid); gfs2_trans_end(sdp); @@ -892,7 +888,7 @@ static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip) */ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, - unsigned int mode) + unsigned int mode, dev_t dev) { struct inode *inode; struct gfs2_inode *dip = ghs->gh_gl->gl_object; @@ -950,7 +946,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, goto fail_gunlock; } - error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation); + error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev); if (error) goto fail_gunlock2; diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index d699b92..33c9ea6 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -37,7 +37,7 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff); struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, int is_root, struct nameidata *nd); struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, - unsigned int mode); + unsigned int mode, dev_t dev); int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, struct gfs2_inode *ip); int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 4bc590e..60dd943 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -170,8 +170,6 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_atime = cpu_to_be64(di->di_atime); str->di_mtime = cpu_to_be64(di->di_mtime); str->di_ctime = cpu_to_be64(di->di_ctime); - str->di_major = cpu_to_be32(di->di_major); - str->di_minor = cpu_to_be32(di->di_minor); str->di_goal_meta = cpu_to_be64(di->di_goal_meta); str->di_goal_data = cpu_to_be64(di->di_goal_data); @@ -202,8 +200,6 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) printk(KERN_INFO " di_atime = %lld\n", (long long)di->di_atime); printk(KERN_INFO " di_mtime = %lld\n", (long long)di->di_mtime); printk(KERN_INFO " di_ctime = %lld\n", (long long)di->di_ctime); - pv(di, di_major, "%u"); - pv(di, di_minor, "%u"); printk(KERN_INFO " di_goal_meta = %llu\n", (unsigned long long)di->di_goal_meta); printk(KERN_INFO " di_goal_data = %llu\n", (unsigned long long)di->di_goal_data); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index b2c2fe6..c10b914 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -59,7 +59,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry, gfs2_holder_init(dip->i_gl, 0, 0, ghs); for (;;) { - inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode); + inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0); if (!IS_ERR(inode)) { gfs2_trans_end(sdp); if (dip->i_alloc.al_rgd) @@ -326,7 +326,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, gfs2_holder_init(dip->i_gl, 0, 0, ghs); - inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO); + inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0); if (IS_ERR(inode)) { gfs2_holder_uninit(ghs); return PTR_ERR(inode); @@ -379,7 +379,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) gfs2_holder_init(dip->i_gl, 0, 0, ghs); - inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode); + inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0); if (IS_ERR(inode)) { gfs2_holder_uninit(ghs); return PTR_ERR(inode); @@ -504,47 +504,19 @@ out: static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) { - struct gfs2_inode *dip = GFS2_I(dir), *ip; + struct gfs2_inode *dip = GFS2_I(dir); struct gfs2_sbd *sdp = GFS2_SB(dir); struct gfs2_holder ghs[2]; struct inode *inode; - struct buffer_head *dibh; - u32 major = 0, minor = 0; - int error; - - switch (mode & S_IFMT) { - case S_IFBLK: - case S_IFCHR: - major = MAJOR(dev); - minor = MINOR(dev); - break; - case S_IFIFO: - case S_IFSOCK: - break; - default: - return -EOPNOTSUPP; - }; gfs2_holder_init(dip->i_gl, 0, 0, ghs); - inode = gfs2_createi(ghs, &dentry->d_name, mode); + inode = gfs2_createi(ghs, &dentry->d_name, mode, dev); if (IS_ERR(inode)) { gfs2_holder_uninit(ghs); return PTR_ERR(inode); } - ip = ghs[1].gh_gl->gl_object; - - ip->i_di.di_major = major; - ip->i_di.di_minor = minor; - - error = gfs2_meta_inode_buffer(ip, &dibh); - - if (!gfs2_assert_withdraw(sdp, !error)) { - gfs2_dinode_out(ip, dibh->b_data); - brelse(dibh); - } - gfs2_trans_end(sdp); if (dip->i_alloc.al_rgd) gfs2_inplace_release(dip); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index c0e76fc..5bcf895 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -331,8 +331,6 @@ struct gfs2_dinode_host { __u64 di_atime; /* time last accessed */ __u64 di_mtime; /* time last modified */ __u64 di_ctime; /* time last changed */ - __u32 di_major; /* device major number */ - __u32 di_minor; /* device minor number */ /* This section varies from gfs1. Padding added to align with * remainder of dinode -- cgit v0.10.2 From b60623c238b6a819bd04090139704e2cb57a751f Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 12:22:46 -0500 Subject: [GFS2] Shrink gfs2_inode (3) - di_mode This removes the duplicate di_mode field in favour of using the inode->i_mode field. This saves 4 bytes. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 906e403..87f6304 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -76,9 +76,9 @@ int gfs2_acl_validate_remove(struct gfs2_inode *ip, int access) return -EOPNOTSUPP; if (current->fsuid != ip->i_di.di_uid && !capable(CAP_FOWNER)) return -EPERM; - if (S_ISLNK(ip->i_di.di_mode)) + if (S_ISLNK(ip->i_inode.i_mode)) return -EOPNOTSUPP; - if (!access && !S_ISDIR(ip->i_di.di_mode)) + if (!access && !S_ISDIR(ip->i_inode.i_mode)) return -EACCES; return 0; @@ -198,8 +198,8 @@ static int munge_mode(struct gfs2_inode *ip, mode_t mode) error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { gfs2_assert_withdraw(sdp, - (ip->i_di.di_mode & S_IFMT) == (mode & S_IFMT)); - ip->i_di.di_mode = mode; + (ip->i_inode.i_mode & S_IFMT) == (mode & S_IFMT)); + ip->i_inode.i_mode = mode; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -215,12 +215,12 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip) struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct posix_acl *acl = NULL, *clone; struct gfs2_ea_request er; - mode_t mode = ip->i_di.di_mode; + mode_t mode = ip->i_inode.i_mode; int error; if (!sdp->sd_args.ar_posix_acl) return 0; - if (S_ISLNK(ip->i_di.di_mode)) + if (S_ISLNK(ip->i_inode.i_mode)) return 0; memset(&er, 0, sizeof(struct gfs2_ea_request)); @@ -232,7 +232,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip) return error; if (!acl) { mode &= ~current->fs->umask; - if (mode != ip->i_di.di_mode) + if (mode != ip->i_inode.i_mode) error = munge_mode(ip, mode); return error; } @@ -244,7 +244,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip) posix_acl_release(acl); acl = clone; - if (S_ISDIR(ip->i_di.di_mode)) { + if (S_ISDIR(ip->i_inode.i_mode)) { er.er_name = GFS2_POSIX_ACL_DEFAULT; er.er_name_len = GFS2_POSIX_ACL_DEFAULT_LEN; error = gfs2_system_eaops.eo_set(ip, &er); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 8c092ab..481a068 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1109,7 +1109,7 @@ int gfs2_truncatei(struct gfs2_inode *ip, u64 size) { int error; - if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_di.di_mode))) + if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_inode.i_mode))) return -EINVAL; if (size > ip->i_di.di_size) diff --git a/fs/gfs2/eaops.c b/fs/gfs2/eaops.c index 92c54e9..cd747c0 100644 --- a/fs/gfs2/eaops.c +++ b/fs/gfs2/eaops.c @@ -120,7 +120,7 @@ static int system_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er) if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) { if (!(er->er_flags & GFS2_ERF_MODE)) { - er->er_mode = ip->i_di.di_mode; + er->er_mode = ip->i_inode.i_mode; er->er_flags |= GFS2_ERF_MODE; } error = gfs2_acl_validate_set(ip, 1, er, diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index 9b7bb56..5208fa9 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -711,9 +711,9 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, if (!error) { if (er->er_flags & GFS2_ERF_MODE) { gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), - (ip->i_di.di_mode & S_IFMT) == + (ip->i_inode.i_mode & S_IFMT) == (er->er_mode & S_IFMT)); - ip->i_di.di_mode = er->er_mode; + ip->i_inode.i_mode = er->er_mode; } ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); @@ -847,8 +847,8 @@ static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, if (er->er_flags & GFS2_ERF_MODE) { gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), - (ip->i_di.di_mode & S_IFMT) == (er->er_mode & S_IFMT)); - ip->i_di.di_mode = er->er_mode; + (ip->i_inode.i_mode & S_IFMT) == (er->er_mode & S_IFMT)); + ip->i_inode.i_mode = er->er_mode; } ip->i_di.di_ctime = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 78fe0fa..44633c4 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -2078,7 +2078,7 @@ static int dump_inode(struct gfs2_inode *ip) printk(KERN_INFO " num = %llu %llu\n", (unsigned long long)ip->i_num.no_formal_ino, (unsigned long long)ip->i_num.no_addr); - printk(KERN_INFO " type = %u\n", IF2DT(ip->i_di.di_mode)); + printk(KERN_INFO " type = %u\n", IF2DT(ip->i_inode.i_mode)); printk(KERN_INFO " i_flags ="); for (x = 0; x < 32; x++) if (test_bit(x, &ip->i_flags)) diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 5406b19..aad45b7 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -92,7 +92,7 @@ static void gfs2_pte_inval(struct gfs2_glock *gl) ip = gl->gl_object; inode = &ip->i_inode; - if (!ip || !S_ISREG(ip->i_di.di_mode)) + if (!ip || !S_ISREG(inode->i_mode)) return; if (!test_bit(GIF_PAGED, &ip->i_flags)) @@ -119,7 +119,7 @@ static void gfs2_page_inval(struct gfs2_glock *gl) ip = gl->gl_object; inode = &ip->i_inode; - if (!ip || !S_ISREG(ip->i_di.di_mode)) + if (!ip || !S_ISREG(inode->i_mode)) return; truncate_inode_pages(inode->i_mapping, 0); @@ -142,7 +142,7 @@ static void gfs2_page_wait(struct gfs2_glock *gl) struct address_space *mapping = inode->i_mapping; int error; - if (!S_ISREG(ip->i_di.di_mode)) + if (!S_ISREG(inode->i_mode)) return; error = filemap_fdatawait(mapping); @@ -164,7 +164,7 @@ static void gfs2_page_writeback(struct gfs2_glock *gl) struct inode *inode = &ip->i_inode; struct address_space *mapping = inode->i_mapping; - if (!S_ISREG(ip->i_di.di_mode)) + if (!S_ISREG(inode->i_mode)) return; filemap_fdatawrite(mapping); diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index a995919..de46604 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -51,7 +51,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) struct gfs2_dinode_host *di = &ip->i_di; inode->i_ino = ip->i_num.no_addr; - inode->i_mode = di->di_mode; inode->i_nlink = di->di_nlink; inode->i_uid = di->di_uid; inode->i_gid = di->di_gid; @@ -88,9 +87,6 @@ void gfs2_inode_attr_out(struct gfs2_inode *ip) { struct inode *inode = &ip->i_inode; struct gfs2_dinode_host *di = &ip->i_di; - gfs2_assert_withdraw(GFS2_SB(inode), - (di->di_mode & S_IFMT) == (inode->i_mode & S_IFMT)); - di->di_mode = inode->i_mode; di->di_uid = inode->i_uid; di->di_gid = inode->i_gid; di->di_atime = inode->i_atime.tv_sec; @@ -210,9 +206,9 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) if (ip->i_num.no_formal_ino != be64_to_cpu(str->di_num.no_formal_ino)) return -ESTALE; - di->di_mode = be32_to_cpu(str->di_mode); + ip->i_inode.i_mode = be32_to_cpu(str->di_mode); ip->i_inode.i_rdev = 0; - switch (di->di_mode & S_IFMT) { + switch (ip->i_inode.i_mode & S_IFMT) { case S_IFBLK: case S_IFCHR: ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), @@ -620,7 +616,7 @@ static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode, unsigned int *uid, unsigned int *gid) { if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && - (dip->i_di.di_mode & S_ISUID) && dip->i_di.di_uid) { + (dip->i_inode.i_mode & S_ISUID) && dip->i_di.di_uid) { if (S_ISDIR(*mode)) *mode |= S_ISUID; else if (dip->i_di.di_uid != current->fsuid) @@ -629,7 +625,7 @@ static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode, } else *uid = current->fsuid; - if (dip->i_di.di_mode & S_ISGID) { + if (dip->i_inode.i_mode & S_ISGID) { if (S_ISDIR(*mode)) *mode |= S_ISGID; *gid = dip->i_di.di_gid; @@ -810,7 +806,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, goto fail_quota_locks; } - error = gfs2_dir_add(&dip->i_inode, name, &ip->i_num, IF2DT(ip->i_di.di_mode)); + error = gfs2_dir_add(&dip->i_inode, name, &ip->i_num, IF2DT(ip->i_inode.i_mode)); if (error) goto fail_end_trans; @@ -1053,7 +1049,7 @@ int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode)) return -EPERM; - if ((dip->i_di.di_mode & S_ISVTX) && + if ((dip->i_inode.i_mode & S_ISVTX) && dip->i_di.di_uid != current->fsuid && ip->i_di.di_uid != current->fsuid && !capable(CAP_FOWNER)) return -EPERM; @@ -1072,7 +1068,7 @@ int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, if (!gfs2_inum_equal(&inum, &ip->i_num)) return -ENOENT; - if (IF2DT(ip->i_di.di_mode) != type) { + if (IF2DT(ip->i_inode.i_mode) != type) { gfs2_consist_inode(dip); return -EIO; } diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 33c9ea6..69cbf98 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -22,7 +22,7 @@ static inline int gfs2_is_jdata(struct gfs2_inode *ip) static inline int gfs2_is_dir(struct gfs2_inode *ip) { - return S_ISDIR(ip->i_di.di_mode); + return S_ISDIR(ip->i_inode.i_mode); } void gfs2_inode_attr_in(struct gfs2_inode *ip); diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 60dd943..6b50a57 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -161,7 +161,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) gfs2_inum_out(&ip->i_num, &str->di_num); - str->di_mode = cpu_to_be32(di->di_mode); + str->di_mode = cpu_to_be32(ip->i_inode.i_mode); str->di_uid = cpu_to_be32(di->di_uid); str->di_gid = cpu_to_be32(di->di_gid); str->di_nlink = cpu_to_be32(di->di_nlink); @@ -191,7 +191,6 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) gfs2_inum_print(&ip->i_num); - pv(di, di_mode, "0%o"); pv(di, di_uid, "%u"); pv(di, di_gid, "%u"); pv(di, di_nlink, "%u"); diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 015640b..45a3d85 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -498,7 +498,6 @@ static int gfs2_commit_write(struct file *file, struct page *page, di->di_size = cpu_to_be64(inode->i_size); } - di->di_mode = cpu_to_be32(inode->i_mode); di->di_atime = cpu_to_be64(inode->i_atime.tv_sec); di->di_mtime = cpu_to_be64(inode->i_mtime.tv_sec); di->di_ctime = cpu_to_be64(inode->i_ctime.tv_sec); diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c index c36f9e3..d355899 100644 --- a/fs/gfs2/ops_dentry.c +++ b/fs/gfs2/ops_dentry.c @@ -76,7 +76,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd) if (!gfs2_inum_equal(&ip->i_num, &inum)) goto invalid_gunlock; - if (IF2DT(ip->i_di.di_mode) != type) { + if (IF2DT(ip->i_inode.i_mode) != type) { gfs2_consist_inode(dip); goto fail_gunlock; } diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 7ea4175..b52b9db 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -425,7 +425,7 @@ static int gfs2_open(struct inode *inode, struct file *file) gfs2_assert_warn(GFS2_SB(inode), !file->private_data); file->private_data = fp; - if (S_ISREG(ip->i_di.di_mode)) { + if (S_ISREG(ip->i_inode.i_mode)) { error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); if (error) @@ -515,7 +515,7 @@ static int gfs2_lock(struct file *file, int cmd, struct file_lock *fl) if (!(fl->fl_flags & FL_POSIX)) return -ENOLCK; - if ((ip->i_di.di_mode & (S_ISGID | S_IXGRP)) == S_ISGID) + if ((ip->i_inode.i_mode & (S_ISGID | S_IXGRP)) == S_ISGID) return -ENOLCK; if (sdp->sd_args.ar_localflocks) { @@ -617,7 +617,7 @@ static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl) if (!(fl->fl_flags & FL_FLOCK)) return -ENOLCK; - if ((ip->i_di.di_mode & (S_ISGID | S_IXGRP)) == S_ISGID) + if ((ip->i_inode.i_mode & (S_ISGID | S_IXGRP)) == S_ISGID) return -ENOLCK; if (sdp->sd_args.ar_localflocks) diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index c10b914..cf7a5ba 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -144,7 +144,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, int alloc_required; int error; - if (S_ISDIR(ip->i_di.di_mode)) + if (S_ISDIR(inode->i_mode)) return -EPERM; gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); @@ -220,7 +220,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, } error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num, - IF2DT(ip->i_di.di_mode)); + IF2DT(inode->i_mode)); if (error) goto out_end_trans; @@ -564,11 +564,10 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, /* Make sure we aren't trying to move a dirctory into it's subdir */ - if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) { + if (S_ISDIR(ip->i_inode.i_mode) && odip != ndip) { dir_rename = 1; - error = gfs2_glock_nq_init(sdp->sd_rename_gl, - LM_ST_EXCLUSIVE, 0, + error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 0, &r_gh); if (error) goto out; @@ -609,7 +608,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (error) goto out_gunlock; - if (S_ISDIR(nip->i_di.di_mode)) { + if (S_ISDIR(nip->i_inode.i_mode)) { if (nip->i_di.di_entries < 2) { if (gfs2_consist_inode(nip)) gfs2_dinode_print(nip); @@ -646,7 +645,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, error = -EFBIG; goto out_gunlock; } - if (S_ISDIR(ip->i_di.di_mode) && + if (S_ISDIR(ip->i_inode.i_mode) && ndip->i_di.di_nlink == (u32)-1) { error = -EMLINK; goto out_gunlock; @@ -701,7 +700,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, /* Remove the target file, if it exists */ if (nip) { - if (S_ISDIR(nip->i_di.di_mode)) + if (S_ISDIR(nip->i_inode.i_mode)) error = gfs2_rmdiri(ndip, &ndentry->d_name, nip); else { error = gfs2_dir_del(ndip, &ndentry->d_name); @@ -743,7 +742,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, goto out_end_trans; error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num, - IF2DT(ip->i_di.di_mode)); + IF2DT(ip->i_inode.i_mode)); if (error) goto out_end_trans; diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c index 9c786d1..8635175 100644 --- a/fs/gfs2/ops_super.c +++ b/fs/gfs2/ops_super.c @@ -407,7 +407,7 @@ static void gfs2_delete_inode(struct inode *inode) if (error) goto out_uninit; - if (S_ISDIR(ip->i_di.di_mode) && + if (S_ISDIR(inode->i_mode) && (ip->i_di.di_flags & GFS2_DIF_EXHASH)) { error = gfs2_dir_exhash_dealloc(ip); if (error) diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 5bcf895..f1ea0b4 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -322,7 +322,6 @@ struct gfs2_dinode { }; struct gfs2_dinode_host { - __u32 di_mode; /* mode of file */ __u32 di_uid; /* owner's user id */ __u32 di_gid; /* owner's group id */ __u32 di_nlink; /* number of links to this file */ -- cgit v0.10.2 From 2933f9254a6af33db25270778c998a42029da668 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 13:23:29 -0500 Subject: [GFS2] Shrink gfs2_inode (4) - di_uid/di_gid Remove duplicate di_uid/di_gid fields in favour of using inode->i_uid/inode->i_gid instead. This saves 8 bytes. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 87f6304..3908992 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -74,7 +74,7 @@ int gfs2_acl_validate_remove(struct gfs2_inode *ip, int access) { if (!GFS2_SB(&ip->i_inode)->sd_args.ar_posix_acl) return -EOPNOTSUPP; - if (current->fsuid != ip->i_di.di_uid && !capable(CAP_FOWNER)) + if (current->fsuid != ip->i_inode.i_uid && !capable(CAP_FOWNER)) return -EPERM; if (S_ISLNK(ip->i_inode.i_mode)) return -EOPNOTSUPP; diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 481a068..0c913ee 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -819,7 +819,7 @@ static int do_grow(struct gfs2_inode *ip, u64 size) if (error) goto out; - error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid); + error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid); if (error) goto out_gunlock_q; diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index 5208fa9..935cc9a 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -687,7 +687,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, if (error) goto out; - error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid); + error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid); if (error) goto out_gunlock_q; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index de46604..0de9b22 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -52,8 +52,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) inode->i_ino = ip->i_num.no_addr; inode->i_nlink = di->di_nlink; - inode->i_uid = di->di_uid; - inode->i_gid = di->di_gid; i_size_write(inode, di->di_size); inode->i_atime.tv_sec = di->di_atime; inode->i_mtime.tv_sec = di->di_mtime; @@ -87,8 +85,6 @@ void gfs2_inode_attr_out(struct gfs2_inode *ip) { struct inode *inode = &ip->i_inode; struct gfs2_dinode_host *di = &ip->i_di; - di->di_uid = inode->i_uid; - di->di_gid = inode->i_gid; di->di_atime = inode->i_atime.tv_sec; di->di_mtime = inode->i_mtime.tv_sec; di->di_ctime = inode->i_ctime.tv_sec; @@ -216,8 +212,8 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) break; }; - di->di_uid = be32_to_cpu(str->di_uid); - di->di_gid = be32_to_cpu(str->di_gid); + ip->i_inode.i_uid = be32_to_cpu(str->di_uid); + ip->i_inode.i_gid = be32_to_cpu(str->di_gid); di->di_nlink = be32_to_cpu(str->di_nlink); di->di_size = be64_to_cpu(str->di_size); di->di_blocks = be64_to_cpu(str->di_blocks); @@ -616,19 +612,19 @@ static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode, unsigned int *uid, unsigned int *gid) { if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && - (dip->i_inode.i_mode & S_ISUID) && dip->i_di.di_uid) { + (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) { if (S_ISDIR(*mode)) *mode |= S_ISUID; - else if (dip->i_di.di_uid != current->fsuid) + else if (dip->i_inode.i_uid != current->fsuid) *mode &= ~07111; - *uid = dip->i_di.di_uid; + *uid = dip->i_inode.i_uid; } else *uid = current->fsuid; if (dip->i_inode.i_mode & S_ISGID) { if (S_ISDIR(*mode)) *mode |= S_ISGID; - *gid = dip->i_di.di_gid; + *gid = dip->i_inode.i_gid; } else *gid = current->fsgid; } @@ -783,8 +779,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, if (alloc_required < 0) goto fail; if (alloc_required) { - error = gfs2_quota_check(dip, dip->i_di.di_uid, - dip->i_di.di_gid); + error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid); if (error) goto fail_quota_locks; @@ -1050,8 +1045,8 @@ int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, return -EPERM; if ((dip->i_inode.i_mode & S_ISVTX) && - dip->i_di.di_uid != current->fsuid && - ip->i_di.di_uid != current->fsuid && !capable(CAP_FOWNER)) + dip->i_inode.i_uid != current->fsuid && + ip->i_inode.i_uid != current->fsuid && !capable(CAP_FOWNER)) return -EPERM; if (IS_APPEND(&dip->i_inode)) diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 6b50a57..e224f6a 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -162,8 +162,8 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) gfs2_inum_out(&ip->i_num, &str->di_num); str->di_mode = cpu_to_be32(ip->i_inode.i_mode); - str->di_uid = cpu_to_be32(di->di_uid); - str->di_gid = cpu_to_be32(di->di_gid); + str->di_uid = cpu_to_be32(ip->i_inode.i_uid); + str->di_gid = cpu_to_be32(ip->i_inode.i_gid); str->di_nlink = cpu_to_be32(di->di_nlink); str->di_size = cpu_to_be64(di->di_size); str->di_blocks = cpu_to_be64(di->di_blocks); @@ -191,8 +191,6 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) gfs2_inum_print(&ip->i_num); - pv(di, di_uid, "%u"); - pv(di, di_gid, "%u"); pv(di, di_nlink, "%u"); printk(KERN_INFO " di_size = %llu\n", (unsigned long long)di->di_size); printk(KERN_INFO " di_blocks = %llu\n", (unsigned long long)di->di_blocks); diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 45a3d85..38b702a 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -386,7 +386,7 @@ static int gfs2_prepare_write(struct file *file, struct page *page, if (error) goto out_alloc_put; - error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid); + error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid); if (error) goto out_qunlock; diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index cf7a5ba..efbcec3 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -196,8 +196,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, if (error) goto out_alloc; - error = gfs2_quota_check(dip, dip->i_di.di_uid, - dip->i_di.di_gid); + error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid); if (error) goto out_gunlock_q; @@ -673,8 +672,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (error) goto out_alloc; - error = gfs2_quota_check(ndip, ndip->i_di.di_uid, - ndip->i_di.di_gid); + error = gfs2_quota_check(ndip, ndip->i_inode.i_uid, ndip->i_inode.i_gid); if (error) goto out_gunlock_q; @@ -885,8 +883,8 @@ static int setattr_chown(struct inode *inode, struct iattr *attr) u32 ouid, ogid, nuid, ngid; int error; - ouid = ip->i_di.di_uid; - ogid = ip->i_di.di_gid; + ouid = inode->i_uid; + ogid = inode->i_gid; nuid = attr->ia_uid; ngid = attr->ia_gid; diff --git a/fs/gfs2/ops_vm.c b/fs/gfs2/ops_vm.c index 5453d29..45a5f11 100644 --- a/fs/gfs2/ops_vm.c +++ b/fs/gfs2/ops_vm.c @@ -76,7 +76,7 @@ static int alloc_page_backing(struct gfs2_inode *ip, struct page *page) if (error) goto out; - error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid); + error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid); if (error) goto out_gunlock_q; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 5d00e9b..d0db881 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -452,19 +452,19 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid) if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) return 0; - error = qdsb_get(sdp, QUOTA_USER, ip->i_di.di_uid, CREATE, qd); + error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, CREATE, qd); if (error) goto out; al->al_qd_num++; qd++; - error = qdsb_get(sdp, QUOTA_GROUP, ip->i_di.di_gid, CREATE, qd); + error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, CREATE, qd); if (error) goto out; al->al_qd_num++; qd++; - if (uid != NO_QUOTA_CHANGE && uid != ip->i_di.di_uid) { + if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) { error = qdsb_get(sdp, QUOTA_USER, uid, CREATE, qd); if (error) goto out; @@ -472,7 +472,7 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid) qd++; } - if (gid != NO_QUOTA_CHANGE && gid != ip->i_di.di_gid) { + if (gid != NO_QUOTA_CHANGE && gid != ip->i_inode.i_gid) { error = qdsb_get(sdp, QUOTA_GROUP, gid, CREATE, qd); if (error) goto out; diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 07dfd63..ff08465 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -1217,7 +1217,7 @@ u64 gfs2_alloc_data(struct gfs2_inode *ip) al->al_alloced++; gfs2_statfs_change(sdp, 0, -1, 0); - gfs2_quota_change(ip, +1, ip->i_di.di_uid, ip->i_di.di_gid); + gfs2_quota_change(ip, +1, ip->i_inode.i_uid, ip->i_inode.i_gid); spin_lock(&sdp->sd_rindex_spin); rgd->rd_free_clone--; @@ -1261,7 +1261,7 @@ u64 gfs2_alloc_meta(struct gfs2_inode *ip) al->al_alloced++; gfs2_statfs_change(sdp, 0, -1, 0); - gfs2_quota_change(ip, +1, ip->i_di.di_uid, ip->i_di.di_gid); + gfs2_quota_change(ip, +1, ip->i_inode.i_uid, ip->i_inode.i_gid); gfs2_trans_add_unrevoke(sdp, block); spin_lock(&sdp->sd_rindex_spin); @@ -1337,8 +1337,7 @@ void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen) gfs2_trans_add_rg(rgd); gfs2_statfs_change(sdp, 0, +blen, 0); - gfs2_quota_change(ip, -(s64)blen, - ip->i_di.di_uid, ip->i_di.di_gid); + gfs2_quota_change(ip, -(s64)blen, ip->i_inode.i_uid, ip->i_inode.i_gid); } /** @@ -1366,7 +1365,7 @@ void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen) gfs2_trans_add_rg(rgd); gfs2_statfs_change(sdp, 0, +blen, 0); - gfs2_quota_change(ip, -(s64)blen, ip->i_di.di_uid, ip->i_di.di_gid); + gfs2_quota_change(ip, -(s64)blen, ip->i_inode.i_uid, ip->i_inode.i_gid); gfs2_meta_wipe(ip, bstart, blen); } @@ -1411,7 +1410,7 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno) void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip) { gfs2_free_uninit_di(rgd, ip->i_num.no_addr); - gfs2_quota_change(ip, -1, ip->i_di.di_uid, ip->i_di.di_gid); + gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid); gfs2_meta_wipe(ip, ip->i_num.no_addr, 1); } diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index f1ea0b4..896c7f8 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -322,8 +322,6 @@ struct gfs2_dinode { }; struct gfs2_dinode_host { - __u32 di_uid; /* owner's user id */ - __u32 di_gid; /* owner's group id */ __u32 di_nlink; /* number of links to this file */ __u64 di_size; /* number of bytes in file */ __u64 di_blocks; /* number of blocks in file */ -- cgit v0.10.2 From 4f56110a00af5fb2e22fbccfcaf944d62cae8fcf Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 14:04:17 -0500 Subject: [GFS2] Shrink gfs2_inode (5) - di_nlink Remove the di_nlink field in favour of inode->i_nlink and update the nlink handling to use the proper macros. This saves 4 bytes. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 0de9b22..7112039 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -51,7 +51,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) struct gfs2_dinode_host *di = &ip->i_di; inode->i_ino = ip->i_num.no_addr; - inode->i_nlink = di->di_nlink; i_size_write(inode, di->di_size); inode->i_atime.tv_sec = di->di_atime; inode->i_mtime.tv_sec = di->di_mtime; @@ -214,7 +213,12 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) ip->i_inode.i_uid = be32_to_cpu(str->di_uid); ip->i_inode.i_gid = be32_to_cpu(str->di_gid); - di->di_nlink = be32_to_cpu(str->di_nlink); + /* + * We will need to review setting the nlink count here in the + * light of the forthcoming ro bind mount work. This is a reminder + * to do that. + */ + ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink); di->di_size = be64_to_cpu(str->di_size); di->di_blocks = be64_to_cpu(str->di_blocks); di->di_atime = be64_to_cpu(str->di_atime); @@ -336,12 +340,12 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) u32 nlink; int error; - BUG_ON(ip->i_di.di_nlink != ip->i_inode.i_nlink); - nlink = ip->i_di.di_nlink + diff; + BUG_ON(diff != 1 && diff != -1); + nlink = ip->i_inode.i_nlink + diff; /* If we are reducing the nlink count, but the new value ends up being bigger than the old one, we must have underflowed. */ - if (diff < 0 && nlink > ip->i_di.di_nlink) { + if (diff < 0 && nlink > ip->i_inode.i_nlink) { if (gfs2_consist_inode(ip)) gfs2_dinode_print(ip); return -EIO; @@ -351,16 +355,19 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) if (error) return error; - ip->i_di.di_nlink = nlink; + if (diff > 0) + inc_nlink(&ip->i_inode); + else + drop_nlink(&ip->i_inode); + ip->i_di.di_ctime = get_seconds(); - ip->i_inode.i_nlink = nlink; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); mark_inode_dirty(&ip->i_inode); - if (ip->i_di.di_nlink == 0) { + if (ip->i_inode.i_nlink == 0) { struct gfs2_rgrpd *rgd; struct gfs2_holder ri_gh, rg_gh; @@ -375,7 +382,6 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) if (error) goto out_norgrp; - clear_nlink(&ip->i_inode); gfs2_unlink_di(&ip->i_inode); /* mark inode unlinked */ gfs2_glock_dq_uninit(&rg_gh); out_norgrp: @@ -586,7 +592,7 @@ static int create_ok(struct gfs2_inode *dip, const struct qstr *name, return error; /* Don't create entries in an unlinked directory */ - if (!dip->i_di.di_nlink) + if (!dip->i_inode.i_nlink) return -EPERM; error = gfs2_dir_search(&dip->i_inode, name, NULL, NULL); @@ -602,7 +608,7 @@ static int create_ok(struct gfs2_inode *dip, const struct qstr *name, if (dip->i_di.di_entries == (u32)-1) return -EFBIG; - if (S_ISDIR(mode) && dip->i_di.di_nlink == (u32)-1) + if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1) return -EMLINK; return 0; @@ -808,7 +814,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, error = gfs2_meta_inode_buffer(ip, &dibh); if (error) goto fail_end_trans; - ip->i_di.di_nlink = 1; + ip->i_inode.i_nlink = 1; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -1016,7 +1022,12 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name, if (error) return error; - error = gfs2_change_nlink(ip, -2); + /* It looks odd, but it really should be done twice */ + error = gfs2_change_nlink(ip, -1); + if (error) + return error; + + error = gfs2_change_nlink(ip, -1); if (error) return error; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index e224f6a..b4e354b 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -164,7 +164,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_mode = cpu_to_be32(ip->i_inode.i_mode); str->di_uid = cpu_to_be32(ip->i_inode.i_uid); str->di_gid = cpu_to_be32(ip->i_inode.i_gid); - str->di_nlink = cpu_to_be32(di->di_nlink); + str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); str->di_size = cpu_to_be64(di->di_size); str->di_blocks = cpu_to_be64(di->di_blocks); str->di_atime = cpu_to_be64(di->di_atime); @@ -191,7 +191,6 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) gfs2_inum_print(&ip->i_num); - pv(di, di_nlink, "%u"); printk(KERN_INFO " di_size = %llu\n", (unsigned long long)di->di_size); printk(KERN_INFO " di_blocks = %llu\n", (unsigned long long)di->di_blocks); printk(KERN_INFO " di_atime = %lld\n", (long long)di->di_atime); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index efbcec3..06176de 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -169,7 +169,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, } error = -EINVAL; - if (!dip->i_di.di_nlink) + if (!dip->i_inode.i_nlink) goto out_gunlock; error = -EFBIG; if (dip->i_di.di_entries == (u32)-1) @@ -178,10 +178,10 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) goto out_gunlock; error = -EINVAL; - if (!ip->i_di.di_nlink) + if (!ip->i_inode.i_nlink) goto out_gunlock; error = -EMLINK; - if (ip->i_di.di_nlink == (u32)-1) + if (ip->i_inode.i_nlink == (u32)-1) goto out_gunlock; alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name); @@ -386,7 +386,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) ip = ghs[1].gh_gl->gl_object; - ip->i_di.di_nlink = 2; + ip->i_inode.i_nlink = 2; ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); ip->i_di.di_flags |= GFS2_DIF_JDATA; ip->i_di.di_payload_format = GFS2_FORMAT_DE; @@ -636,7 +636,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, }; if (odip != ndip) { - if (!ndip->i_di.di_nlink) { + if (!ndip->i_inode.i_nlink) { error = -EINVAL; goto out_gunlock; } @@ -645,7 +645,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, goto out_gunlock; } if (S_ISDIR(ip->i_inode.i_mode) && - ndip->i_di.di_nlink == (u32)-1) { + ndip->i_inode.i_nlink == (u32)-1) { error = -EMLINK; goto out_gunlock; } diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 896c7f8..c61517b 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -322,7 +322,6 @@ struct gfs2_dinode { }; struct gfs2_dinode_host { - __u32 di_nlink; /* number of links to this file */ __u64 di_size; /* number of bytes in file */ __u64 di_blocks; /* number of blocks in file */ __u64 di_atime; /* time last accessed */ -- cgit v0.10.2 From 1a7b1eed5802502fd649e04784becd58557fdcf1 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 14:35:17 -0500 Subject: [GFS2] Shrink gfs2_inode (6) - di_atime/di_mtime/di_ctime Remove the di_[amc]time fields and use inode->i_[amc]time fields instead. This saves 24 bytes from the gfs2_inode. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 0c913ee..692d4a3 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -778,7 +778,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, gfs2_free_data(ip, bstart, blen); } - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_dinode_out(ip, dibh->b_data); @@ -853,7 +853,7 @@ static int do_grow(struct gfs2_inode *ip, u64 size) } ip->i_di.di_size = size; - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); error = gfs2_meta_inode_buffer(ip, &dibh); if (error) @@ -968,7 +968,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size) if (gfs2_is_stuffed(ip)) { ip->i_di.di_size = size; - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + size); @@ -980,7 +980,7 @@ static int trunc_start(struct gfs2_inode *ip, u64 size) if (!error) { ip->i_di.di_size = size; - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); ip->i_di.di_flags |= GFS2_DIF_TRUNC_IN_PROG; gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); @@ -1053,7 +1053,7 @@ static int trunc_end(struct gfs2_inode *ip) ip->i_num.no_addr; gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); } - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); ip->i_di.di_flags &= ~GFS2_DIF_TRUNC_IN_PROG; gfs2_trans_add_bh(ip->i_gl, dibh, 1); diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 0742761..ca23c8b 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -131,7 +131,7 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf, memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size); if (ip->i_di.di_size < offset + size) ip->i_di.di_size = offset + size; - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -229,7 +229,7 @@ out: if (ip->i_di.di_size < offset + copied) ip->i_di.di_size = offset + copied; - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); @@ -1560,7 +1560,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name, break; gfs2_trans_add_bh(ip->i_gl, bh, 1); ip->i_di.di_entries++; - ip->i_di.di_mtime = ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_mtime.tv_sec = ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_dinode_out(ip, bh->b_data); brelse(bh); error = 0; @@ -1646,7 +1646,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name) gfs2_consist_inode(dip); gfs2_trans_add_bh(dip->i_gl, bh, 1); dip->i_di.di_entries--; - dip->i_di.di_mtime = dip->i_di.di_ctime = get_seconds(); + dip->i_inode.i_mtime.tv_sec = dip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_dinode_out(dip, bh->b_data); brelse(bh); mark_inode_dirty(&dip->i_inode); @@ -1694,7 +1694,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, gfs2_trans_add_bh(dip->i_gl, bh, 1); } - dip->i_di.di_mtime = dip->i_di.di_ctime = get_seconds(); + dip->i_inode.i_mtime.tv_sec = dip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_dinode_out(dip, bh->b_data); brelse(bh); return 0; diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index 935cc9a..7dde847 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -300,7 +300,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { - ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -715,7 +715,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, (er->er_mode & S_IFMT)); ip->i_inode.i_mode = er->er_mode; } - ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -850,7 +850,7 @@ static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, (ip->i_inode.i_mode & S_IFMT) == (er->er_mode & S_IFMT)); ip->i_inode.i_mode = er->er_mode; } - ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -1130,7 +1130,7 @@ static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { - ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -1285,7 +1285,6 @@ int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el, if (!error) { error = inode_setattr(&ip->i_inode, attr); gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error); - gfs2_inode_attr_out(ip); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 7112039..c22ae3c 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -52,12 +52,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) inode->i_ino = ip->i_num.no_addr; i_size_write(inode, di->di_size); - inode->i_atime.tv_sec = di->di_atime; - inode->i_mtime.tv_sec = di->di_mtime; - inode->i_ctime.tv_sec = di->di_ctime; - inode->i_atime.tv_nsec = 0; - inode->i_mtime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; inode->i_blocks = di->di_blocks << (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); @@ -72,23 +66,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) inode->i_flags &= ~S_APPEND; } -/** - * gfs2_inode_attr_out - Copy attributes from VFS inode into the dinode - * @ip: The GFS2 inode - * - * Only copy out the attributes that we want the VFS layer - * to be able to modify. - */ - -void gfs2_inode_attr_out(struct gfs2_inode *ip) -{ - struct inode *inode = &ip->i_inode; - struct gfs2_dinode_host *di = &ip->i_di; - di->di_atime = inode->i_atime.tv_sec; - di->di_mtime = inode->i_mtime.tv_sec; - di->di_ctime = inode->i_ctime.tv_sec; -} - static int iget_test(struct inode *inode, void *opaque) { struct gfs2_inode *ip = GFS2_I(inode); @@ -221,9 +198,12 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink); di->di_size = be64_to_cpu(str->di_size); di->di_blocks = be64_to_cpu(str->di_blocks); - di->di_atime = be64_to_cpu(str->di_atime); - di->di_mtime = be64_to_cpu(str->di_mtime); - di->di_ctime = be64_to_cpu(str->di_ctime); + ip->i_inode.i_atime.tv_sec = be64_to_cpu(str->di_atime); + ip->i_inode.i_atime.tv_nsec = 0; + ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); + ip->i_inode.i_mtime.tv_nsec = 0; + ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); + ip->i_inode.i_ctime.tv_nsec = 0; di->di_goal_meta = be64_to_cpu(str->di_goal_meta); di->di_goal_data = be64_to_cpu(str->di_goal_data); @@ -360,7 +340,7 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) else drop_nlink(&ip->i_inode); - ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); @@ -1224,7 +1204,7 @@ int gfs2_glock_nq_atime(struct gfs2_holder *gh) return 0; curtime = get_seconds(); - if (curtime - ip->i_di.di_atime >= quantum) { + if (curtime - ip->i_inode.i_atime.tv_sec >= quantum) { gfs2_glock_dq(gh); gfs2_holder_reinit(LM_ST_EXCLUSIVE, gh->gh_flags & ~LM_FLAG_ANY, gh); @@ -1236,7 +1216,7 @@ int gfs2_glock_nq_atime(struct gfs2_holder *gh) trying to get exclusive lock. */ curtime = get_seconds(); - if (curtime - ip->i_di.di_atime >= quantum) { + if (curtime - ip->i_inode.i_atime.tv_sec >= quantum) { struct buffer_head *dibh; struct gfs2_dinode *di; @@ -1250,11 +1230,11 @@ int gfs2_glock_nq_atime(struct gfs2_holder *gh) if (error) goto fail_end_trans; - ip->i_di.di_atime = curtime; + ip->i_inode.i_atime.tv_sec = curtime; gfs2_trans_add_bh(ip->i_gl, dibh, 1); di = (struct gfs2_dinode *)dibh->b_data; - di->di_atime = cpu_to_be64(ip->i_di.di_atime); + di->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); brelse(dibh); gfs2_trans_end(sdp); @@ -1375,8 +1355,6 @@ __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr) if (!error) { error = inode_setattr(&ip->i_inode, attr); gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error); - gfs2_inode_attr_out(ip); - gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 69cbf98..54d584e 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -26,7 +26,6 @@ static inline int gfs2_is_dir(struct gfs2_inode *ip) } void gfs2_inode_attr_in(struct gfs2_inode *ip); -void gfs2_inode_attr_out(struct gfs2_inode *ip); struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type); struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum); diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index b4e354b..82003e8 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -167,9 +167,9 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); str->di_size = cpu_to_be64(di->di_size); str->di_blocks = cpu_to_be64(di->di_blocks); - str->di_atime = cpu_to_be64(di->di_atime); - str->di_mtime = cpu_to_be64(di->di_mtime); - str->di_ctime = cpu_to_be64(di->di_ctime); + str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); + str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); + str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); str->di_goal_meta = cpu_to_be64(di->di_goal_meta); str->di_goal_data = cpu_to_be64(di->di_goal_data); @@ -193,10 +193,6 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) printk(KERN_INFO " di_size = %llu\n", (unsigned long long)di->di_size); printk(KERN_INFO " di_blocks = %llu\n", (unsigned long long)di->di_blocks); - printk(KERN_INFO " di_atime = %lld\n", (long long)di->di_atime); - printk(KERN_INFO " di_mtime = %lld\n", (long long)di->di_mtime); - printk(KERN_INFO " di_ctime = %lld\n", (long long)di->di_ctime); - printk(KERN_INFO " di_goal_meta = %llu\n", (unsigned long long)di->di_goal_meta); printk(KERN_INFO " di_goal_data = %llu\n", (unsigned long long)di->di_goal_data); diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 38b702a..5c3962c 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -498,10 +498,6 @@ static int gfs2_commit_write(struct file *file, struct page *page, di->di_size = cpu_to_be64(inode->i_size); } - di->di_atime = cpu_to_be64(inode->i_atime.tv_sec); - di->di_mtime = cpu_to_be64(inode->i_mtime.tv_sec); - di->di_ctime = cpu_to_be64(inode->i_ctime.tv_sec); - brelse(dibh); gfs2_trans_end(sdp); if (al->al_requested) { diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index 06176de..585b43a 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -729,7 +729,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, error = gfs2_meta_inode_buffer(ip, &dibh); if (error) goto out_end_trans; - ip->i_di.di_ctime = get_seconds(); + ip->i_inode.i_ctime.tv_sec = get_seconds(); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -915,7 +915,6 @@ static int setattr_chown(struct inode *inode, struct iattr *attr) error = inode_setattr(inode, attr); gfs2_assert_warn(sdp, !error); - gfs2_inode_attr_out(ip); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_dinode_out(ip, dibh->b_data); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index c61517b..7f5a4a1 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -324,9 +324,6 @@ struct gfs2_dinode { struct gfs2_dinode_host { __u64 di_size; /* number of bytes in file */ __u64 di_blocks; /* number of blocks in file */ - __u64 di_atime; /* time last accessed */ - __u64 di_mtime; /* time last modified */ - __u64 di_ctime; /* time last changed */ /* This section varies from gfs1. Padding added to align with * remainder of dinode -- cgit v0.10.2 From a9583c7983cbba9726bfe64ee46613d654fc9e26 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 20:09:14 -0500 Subject: [GFS2] Shrink gfs2_inode (7) - di_payload_format This is almost never used. Its there for backward compatibility with GFS1. It doesn't need its own field since it can always be calculated from the inode mode & flags. This saves a bit more space in the gfs2_inode. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index ca23c8b..c82d7cb 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -902,7 +902,6 @@ static int dir_make_exhash(struct inode *inode) dip->i_di.di_size = sdp->sd_sb.sb_bsize / 2; dip->i_di.di_blocks++; dip->i_di.di_flags |= GFS2_DIF_EXHASH; - dip->i_di.di_payload_format = 0; for (x = sdp->sd_hash_ptrs, y = -1; x; x >>= 1, y++) ; dip->i_di.di_depth = y; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index c22ae3c..f6177fc 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -210,7 +210,6 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) di->di_generation = be64_to_cpu(str->di_generation); di->di_flags = be32_to_cpu(str->di_flags); - di->di_payload_format = be32_to_cpu(str->di_payload_format); di->di_height = be16_to_cpu(str->di_height); di->di_depth = be16_to_cpu(str->di_depth); @@ -699,7 +698,7 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, } di->__pad1 = 0; - di->di_payload_format = cpu_to_be32(0); + di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0); di->di_height = cpu_to_be32(0); di->__pad2 = 0; di->__pad3 = 0; diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index 82003e8..b2baba5 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -176,9 +176,10 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_generation = cpu_to_be64(di->di_generation); str->di_flags = cpu_to_be32(di->di_flags); - str->di_payload_format = cpu_to_be32(di->di_payload_format); str->di_height = cpu_to_be16(di->di_height); - + str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && + !(ip->i_di.di_flags & GFS2_DIF_EXHASH) ? + GFS2_FORMAT_DE : 0); str->di_depth = cpu_to_be16(di->di_depth); str->di_entries = cpu_to_be32(di->di_entries); @@ -197,7 +198,6 @@ void gfs2_dinode_print(const struct gfs2_inode *ip) printk(KERN_INFO " di_goal_data = %llu\n", (unsigned long long)di->di_goal_data); pv(di, di_flags, "0x%.8X"); - pv(di, di_payload_format, "%u"); pv(di, di_height, "%u"); pv(di, di_depth, "%u"); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index 585b43a..0e4eade 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -389,7 +389,6 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) ip->i_inode.i_nlink = 2; ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); ip->i_di.di_flags |= GFS2_DIF_JDATA; - ip->i_di.di_payload_format = GFS2_FORMAT_DE; ip->i_di.di_entries = 2; error = gfs2_meta_inode_buffer(ip, &dibh); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 7f5a4a1..536575e 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -333,7 +333,6 @@ struct gfs2_dinode_host { __u64 di_generation; /* generation number for NFS */ __u32 di_flags; /* GFS2_DIF_... */ - __u32 di_payload_format; /* GFS2_FORMAT_... */ __u16 di_height; /* height of metadata */ /* These only apply to directories */ -- cgit v0.10.2 From bfded27ba010d1c3b0aa3843f97dc9b80de751be Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 1 Nov 2006 16:05:38 -0500 Subject: [GFS2] Shrink gfs2_inode (8) - i_vn This shrinks the size of the gfs2_inode by 8 bytes by replacing the version counter with a one bit valid/invalid flag. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index aad45b7..9c20337 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -305,8 +305,9 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags) int data = (flags & DIO_DATA); if (meta) { + struct gfs2_inode *ip = gl->gl_object; gfs2_meta_inval(gl); - gl->gl_vn++; + set_bit(GIF_INVALID, &ip->i_flags); } if (data) gfs2_page_inval(gl); @@ -351,7 +352,7 @@ static int inode_go_lock(struct gfs2_holder *gh) if (!ip) return 0; - if (ip->i_vn != gl->gl_vn) { + if (test_bit(GIF_INVALID, &ip->i_flags)) { error = gfs2_inode_refresh(ip); if (error) return error; diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index c0a8c3b..227a74d 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -217,6 +217,7 @@ struct gfs2_alloc { }; enum { + GIF_INVALID = 0, GIF_QD_LOCKED = 1, GIF_PAGED = 2, GIF_SW_PAGED = 3, @@ -228,7 +229,6 @@ struct gfs2_inode { unsigned long i_flags; /* GIF_... */ - u64 i_vn; struct gfs2_dinode_host i_di; /* To be replaced by ref to block */ struct gfs2_glock *i_gl; /* Move into i_gh? */ diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index f6177fc..e467780 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -145,7 +145,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *i if (unlikely(error)) goto fail_put; - ip->i_vn = ip->i_gl->gl_vn - 1; + set_bit(GIF_INVALID, &ip->i_flags); error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); if (unlikely(error)) goto fail_iopen; @@ -242,7 +242,7 @@ int gfs2_inode_refresh(struct gfs2_inode *ip) error = gfs2_dinode_in(ip, dibh->b_data); brelse(dibh); - ip->i_vn = ip->i_gl->gl_vn; + clear_bit(GIF_INVALID, &ip->i_flags); return error; } diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index 0e4eade..b247f25 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -844,7 +844,7 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) struct gfs2_holder i_gh; int error; - if (ip->i_vn == ip->i_gl->gl_vn) + if (!test_bit(GIF_INVALID, &ip->i_flags)) return generic_permission(inode, mask, gfs2_check_acl); error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); -- cgit v0.10.2 From 294caaa3b8304c0a14c5039691caf23363bd9369 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 2 Nov 2006 11:59:28 -0500 Subject: [GFS2] Tidy up 0 initialisations in inode.c We don't need to use endian conversions for 0 initialisations when creating a new on-disk inode. Cc: Christoph Hellwig Cc: Alexey Dobriyan Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index e467780..faf9b9e 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -673,15 +673,15 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, di->di_mode = cpu_to_be32(mode); di->di_uid = cpu_to_be32(uid); di->di_gid = cpu_to_be32(gid); - di->di_nlink = cpu_to_be32(0); - di->di_size = cpu_to_be64(0); + di->di_nlink = 0; + di->di_size = 0; di->di_blocks = cpu_to_be64(1); di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(get_seconds()); di->di_major = cpu_to_be32(MAJOR(dev)); di->di_minor = cpu_to_be32(MINOR(dev)); di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr); di->di_generation = cpu_to_be64(*generation); - di->di_flags = cpu_to_be32(0); + di->di_flags = 0; if (S_ISREG(mode)) { if ((dip->i_di.di_flags & GFS2_DIF_INHERIT_JDATA) || @@ -699,13 +699,13 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, di->__pad1 = 0; di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0); - di->di_height = cpu_to_be32(0); + di->di_height = 0; di->__pad2 = 0; di->__pad3 = 0; - di->di_depth = cpu_to_be16(0); - di->di_entries = cpu_to_be32(0); + di->di_depth = 0; + di->di_entries = 0; memset(&di->__pad4, 0, sizeof(di->__pad4)); - di->di_eattr = cpu_to_be64(0); + di->di_eattr = 0; memset(&di->di_reserved, 0, sizeof(di->di_reserved)); brelse(dibh); -- cgit v0.10.2 From f6e58f01e8dc869803b9f73b2aa9d5bc3f32ca05 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 7 Nov 2006 15:14:58 -0500 Subject: [GFS2] Don't copy meta_header for rgrp in and out The meta_header for an ondisk rgrp never changes, so there is no point copying it in and back out to disk. Also there is no reason to keep a copy for each rgrp in memory. The code already checks to ensure that the header is correct before it calls the routine to copy the data in, so that we don't even need to check whether its correct on disk in the functions in ondisk.c Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c index b2baba5..f2495f1 100644 --- a/fs/gfs2/ondisk.c +++ b/fs/gfs2/ondisk.c @@ -65,15 +65,6 @@ static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *bu mh->mh_format = be32_to_cpu(str->mh_format); } -static void gfs2_meta_header_out(const struct gfs2_meta_header_host *mh, void *buf) -{ - struct gfs2_meta_header *str = buf; - - str->mh_magic = cpu_to_be32(mh->mh_magic); - str->mh_type = cpu_to_be32(mh->mh_type); - str->mh_format = cpu_to_be32(mh->mh_format); -} - void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) { const struct gfs2_sb *str = buf; @@ -119,7 +110,6 @@ void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf) { const struct gfs2_rgrp *str = buf; - gfs2_meta_header_in(&rg->rg_header, buf); rg->rg_flags = be32_to_cpu(str->rg_flags); rg->rg_free = be32_to_cpu(str->rg_free); rg->rg_dinodes = be32_to_cpu(str->rg_dinodes); @@ -130,7 +120,6 @@ void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf) { struct gfs2_rgrp *str = buf; - gfs2_meta_header_out(&rg->rg_header, buf); str->rg_flags = cpu_to_be32(rg->rg_flags); str->rg_free = cpu_to_be32(rg->rg_free); str->rg_dinodes = cpu_to_be32(rg->rg_dinodes); diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h index 536575e..8b7e4c1 100644 --- a/include/linux/gfs2_ondisk.h +++ b/include/linux/gfs2_ondisk.h @@ -213,8 +213,6 @@ struct gfs2_rgrp { }; struct gfs2_rgrp_host { - struct gfs2_meta_header_host rg_header; - __u32 rg_flags; __u32 rg_free; __u32 rg_dinodes; -- cgit v0.10.2 From c594d8866460a2710c436839d79f334a0714a2a7 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 8 Nov 2006 09:01:13 -0500 Subject: [GFS2] Remove unused GL_DUMP flag There is no way to set the GL_DUMP flag, and in any case the same thing can be done with systemtap if required for debugging, so this removes it. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 44633c4..746347a 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -1244,9 +1244,6 @@ restart: clear_bit(GLF_PREFETCH, &gl->gl_flags); - if (error == GLR_TRYFAILED && (gh->gh_flags & GL_DUMP)) - dump_glock(gl); - return error; } diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 2b2a889..b985627 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -28,7 +28,6 @@ #define GL_NOCACHE 0x00000400 #define GL_NOCANCEL 0x00001000 #define GL_AOP 0x00004000 -#define GL_DUMP 0x00008000 #define GLR_TRYFAILED 13 #define GLR_CANCELED 14 -- cgit v0.10.2 From 2ca99501fa5422e84f18333918a503433449e2b5 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 8 Nov 2006 10:26:54 -0500 Subject: [GFS2] Fix page lock/glock deadlock This fixes a race between the glock and the page lock encountered during truncate in gfs2_readpage and gfs2_prepare_write. The gfs2_readpages function doesn't need the same fix since it only uses a try lock anyway, so it will fail back to gfs2_readpage in the case of a potential deadlock. This bug was spotted by Russell Cattelan. Cc: Russell Cattelan Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index b985627..a331bf8 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -27,7 +27,6 @@ #define GL_ATIME 0x00000200 #define GL_NOCACHE 0x00000400 #define GL_NOCANCEL 0x00001000 -#define GL_AOP 0x00004000 #define GLR_TRYFAILED 13 #define GLR_CANCELED 14 diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 5c3962c..3822189 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -230,7 +230,7 @@ static int gfs2_readpage(struct file *file, struct page *page) /* gfs2_sharewrite_nopage has grabbed the ip->i_gl already */ goto skip_lock; } - gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|GL_AOP, &gh); + gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|LM_FLAG_TRY_1CB, &gh); do_unlock = 1; error = gfs2_glock_nq_m_atime(1, &gh); if (unlikely(error)) @@ -254,6 +254,8 @@ skip_lock: out: return error; out_unlock: + if (error == GLR_TRYFAILED) + error = AOP_TRUNCATED_PAGE; unlock_page(page); if (do_unlock) gfs2_holder_uninit(&gh); @@ -293,7 +295,7 @@ static int gfs2_readpages(struct file *file, struct address_space *mapping, goto skip_lock; } gfs2_holder_init(ip->i_gl, LM_ST_SHARED, - LM_FLAG_TRY_1CB|GL_ATIME|GL_AOP, &gh); + LM_FLAG_TRY_1CB|GL_ATIME, &gh); do_unlock = 1; ret = gfs2_glock_nq_m_atime(1, &gh); if (ret == GLR_TRYFAILED) @@ -366,10 +368,13 @@ static int gfs2_prepare_write(struct file *file, struct page *page, unsigned int write_len = to - from; - gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME|GL_AOP, &ip->i_gh); + gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME|LM_FLAG_TRY_1CB, &ip->i_gh); error = gfs2_glock_nq_m_atime(1, &ip->i_gh); - if (error) + if (unlikely(error)) { + if (error == GLR_TRYFAILED) + error = AOP_TRUNCATED_PAGE; goto out_uninit; + } gfs2_write_calc_reserv(ip, write_len, &data_blocks, &ind_blocks); -- cgit v0.10.2 From 6b124d8dba1f46c5f2caf3b3159bbe627f75b9b6 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 8 Nov 2006 12:51:06 -0500 Subject: [GFS2] Only set inode flags when required We were setting the inode flags from GFS2's flags far too often, even when they couldn't possibly have changed. This patch reduces the amount of flag setting going on so that we do it only when the inode is read in or when the flags have changed. The create case is covered by the "when the inode is read in" case. This also fixes a bug where we didn't set S_SYNC correctly. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index faf9b9e..56b39be 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -54,16 +54,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) i_size_write(inode, di->di_size); inode->i_blocks = di->di_blocks << (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); - - if (di->di_flags & GFS2_DIF_IMMUTABLE) - inode->i_flags |= S_IMMUTABLE; - else - inode->i_flags &= ~S_IMMUTABLE; - - if (di->di_flags & GFS2_DIF_APPENDONLY) - inode->i_flags |= S_APPEND; - else - inode->i_flags &= ~S_APPEND; } static int iget_test(struct inode *inode, void *opaque) @@ -210,6 +200,7 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) di->di_generation = be64_to_cpu(str->di_generation); di->di_flags = be32_to_cpu(str->di_flags); + gfs2_set_inode_flags(&ip->i_inode); di->di_height = be16_to_cpu(str->di_height); di->di_depth = be16_to_cpu(str->di_depth); diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index b52b9db..eabf6c6 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -266,6 +266,24 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr) return error; } +void gfs2_set_inode_flags(struct inode *inode) +{ + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_dinode_host *di = &ip->i_di; + unsigned int flags = inode->i_flags; + + flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC); + if (di->di_flags & GFS2_DIF_IMMUTABLE) + flags |= S_IMMUTABLE; + if (di->di_flags & GFS2_DIF_APPENDONLY) + flags |= S_APPEND; + if (di->di_flags & GFS2_DIF_NOATIME) + flags |= S_NOATIME; + if (di->di_flags & GFS2_DIF_SYNC) + flags |= S_SYNC; + inode->i_flags = flags; +} + /* Flags that can be set by user space */ #define GFS2_FLAGS_USER_SET (GFS2_DIF_JDATA| \ GFS2_DIF_DIRECTIO| \ @@ -338,6 +356,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) ip->i_di.di_flags = new_flags; gfs2_dinode_out(ip, bh->b_data); brelse(bh); + gfs2_set_inode_flags(inode); out_trans_end: gfs2_trans_end(sdp); out: diff --git a/fs/gfs2/ops_file.h b/fs/gfs2/ops_file.h index ce319f8..7e5d8ec 100644 --- a/fs/gfs2/ops_file.h +++ b/fs/gfs2/ops_file.h @@ -17,7 +17,7 @@ extern struct file gfs2_internal_file_sentinel; extern int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state, char *buf, loff_t *pos, unsigned size); - +extern void gfs2_set_inode_flags(struct inode *inode); extern const struct file_operations gfs2_file_fops; extern const struct file_operations gfs2_dir_fops; -- cgit v0.10.2 From e7c698d74fc9e0e76b3086062b0519df3601ff52 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 8 Nov 2006 13:52:05 -0500 Subject: [GFS2] Inode number is constant Since the inode number is constant, we don't need to keep updating it everytime we refresh the other inode fields. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 56b39be..19b2736 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -50,7 +50,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip) struct inode *inode = &ip->i_inode; struct gfs2_dinode_host *di = &ip->i_di; - inode->i_ino = ip->i_num.no_addr; i_size_write(inode, di->di_size); inode->i_blocks = di->di_blocks << (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); @@ -73,6 +72,7 @@ static int iget_set(struct inode *inode, void *opaque) struct gfs2_inum_host *inum = opaque; ip->i_num = *inum; + inode->i_ino = inum->no_addr; return 0; } -- cgit v0.10.2 From 9e2dbdac3df300516ffdd9a8631f23164d068a50 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 8 Nov 2006 15:45:46 -0500 Subject: [GFS2] Remove gfs2_inode_attr_in This function wasn't really doing the right thing. There was no need to update the inode size at this point and the updating of the i_blocks field has now been moved to the places where di_blocks is updated. A result of this patch and some those preceeding it is that unlocking a glock is now a much more efficient process, since there is no longer any requirement to copy data from the gfs2 inode into the vfs inode at this point. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 692d4a3..06e3447 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -163,6 +163,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) if (ip->i_di.di_size) { *(__be64 *)(di + 1) = cpu_to_be64(block); ip->i_di.di_blocks++; + gfs2_set_inode_blocks(&ip->i_inode); di->di_blocks = cpu_to_be64(ip->i_di.di_blocks); } @@ -272,6 +273,7 @@ static int build_height(struct inode *inode, unsigned height) *(__be64 *)(di + 1) = cpu_to_be64(bn); ip->i_di.di_height += new_height; ip->i_di.di_blocks += new_height; + gfs2_set_inode_blocks(&ip->i_inode); di->di_height = cpu_to_be16(ip->i_di.di_height); di->di_blocks = cpu_to_be64(ip->i_di.di_blocks); brelse(dibh); @@ -415,6 +417,7 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh, *ptr = cpu_to_be64(*block); ip->i_di.di_blocks++; + gfs2_set_inode_blocks(&ip->i_inode); *new = 1; return 0; @@ -770,6 +773,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, if (!ip->i_di.di_blocks) gfs2_consist_inode(ip); ip->i_di.di_blocks--; + gfs2_set_inode_blocks(&ip->i_inode); } if (bstart) { if (metadata) diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index c82d7cb..a2923fb 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -901,6 +901,7 @@ static int dir_make_exhash(struct inode *inode) dip->i_di.di_size = sdp->sd_sb.sb_bsize / 2; dip->i_di.di_blocks++; + gfs2_set_inode_blocks(&dip->i_inode); dip->i_di.di_flags |= GFS2_DIF_EXHASH; for (x = sdp->sd_hash_ptrs, y = -1; x; x >>= 1, y++) ; @@ -1038,6 +1039,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) error = gfs2_meta_inode_buffer(dip, &dibh); if (!gfs2_assert_withdraw(GFS2_SB(&dip->i_inode), !error)) { dip->i_di.di_blocks++; + gfs2_set_inode_blocks(&dip->i_inode); gfs2_dinode_out(dip, dibh->b_data); brelse(dibh); } @@ -1516,6 +1518,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name) return error; gfs2_trans_add_bh(ip->i_gl, bh, 1); ip->i_di.di_blocks++; + gfs2_set_inode_blocks(&ip->i_inode); gfs2_dinode_out(ip, bh->b_data); brelse(bh); return 0; @@ -1860,6 +1863,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, if (!dip->i_di.di_blocks) gfs2_consist_inode(dip); dip->i_di.di_blocks--; + gfs2_set_inode_blocks(&dip->i_inode); } error = gfs2_dir_write_data(dip, ht, index * sizeof(u64), size); diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index 7dde847..ebebbdc 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -281,6 +281,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, if (!ip->i_di.di_blocks) gfs2_consist_inode(ip); ip->i_di.di_blocks--; + gfs2_set_inode_blocks(&ip->i_inode); } if (bstart) gfs2_free_meta(ip, bstart, blen); @@ -598,6 +599,7 @@ static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp) ea->ea_num_ptrs = 0; ip->i_di.di_blocks++; + gfs2_set_inode_blocks(&ip->i_inode); return 0; } @@ -649,6 +651,7 @@ static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED); ip->i_di.di_blocks++; + gfs2_set_inode_blocks(&ip->i_inode); copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize : data_len; @@ -977,6 +980,7 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, ip->i_di.di_eattr = blk; ip->i_di.di_flags |= GFS2_DIF_EA_INDIRECT; ip->i_di.di_blocks++; + gfs2_set_inode_blocks(&ip->i_inode); eablk++; } @@ -1387,6 +1391,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip) if (!ip->i_di.di_blocks) gfs2_consist_inode(ip); ip->i_di.di_blocks--; + gfs2_set_inode_blocks(&ip->i_inode); } if (bstart) gfs2_free_meta(ip, bstart, blen); @@ -1441,6 +1446,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip) if (!ip->i_di.di_blocks) gfs2_consist_inode(ip); ip->i_di.di_blocks--; + gfs2_set_inode_blocks(&ip->i_inode); error = gfs2_meta_inode_buffer(ip, &dibh); if (!error) { diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 9c20337..b92de0a 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -356,7 +356,6 @@ static int inode_go_lock(struct gfs2_holder *gh) error = gfs2_inode_refresh(ip); if (error) return error; - gfs2_inode_attr_in(ip); } if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) && @@ -380,11 +379,8 @@ static void inode_go_unlock(struct gfs2_holder *gh) struct gfs2_glock *gl = gh->gh_gl; struct gfs2_inode *ip = gl->gl_object; - if (ip == NULL) - return; - if (test_bit(GLF_DIRTY, &gl->gl_flags)) - gfs2_inode_attr_in(ip); - gfs2_meta_cache_flush(ip); + if (ip) + gfs2_meta_cache_flush(ip); } /** diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 19b2736..ea9ca23 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -38,29 +38,12 @@ #include "trans.h" #include "util.h" -/** - * gfs2_inode_attr_in - Copy attributes from the dinode into the VFS inode - * @ip: The GFS2 inode (with embedded disk inode data) - * @inode: The Linux VFS inode - * - */ - -void gfs2_inode_attr_in(struct gfs2_inode *ip) -{ - struct inode *inode = &ip->i_inode; - struct gfs2_dinode_host *di = &ip->i_di; - - i_size_write(inode, di->di_size); - inode->i_blocks = di->di_blocks << - (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); -} - static int iget_test(struct inode *inode, void *opaque) { struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_inum_host *inum = opaque; - if (ip && ip->i_num.no_addr == inum->no_addr) + if (ip->i_num.no_addr == inum->no_addr) return 1; return 0; @@ -187,7 +170,9 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) */ ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink); di->di_size = be64_to_cpu(str->di_size); + i_size_write(&ip->i_inode, di->di_size); di->di_blocks = be64_to_cpu(str->di_blocks); + gfs2_set_inode_blocks(&ip->i_inode); ip->i_inode.i_atime.tv_sec = be64_to_cpu(str->di_atime); ip->i_inode.i_atime.tv_nsec = 0; ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 54d584e..46917ed 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -25,6 +25,13 @@ static inline int gfs2_is_dir(struct gfs2_inode *ip) return S_ISDIR(ip->i_inode.i_mode); } +static inline void gfs2_set_inode_blocks(struct inode *inode) +{ + struct gfs2_inode *ip = GFS2_I(inode); + inode->i_blocks = ip->i_di.di_blocks << + (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT); +} + void gfs2_inode_attr_in(struct gfs2_inode *ip); struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type); struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum); -- cgit v0.10.2 From 7020933156ac2a8a7386314933e49948bf0438f7 Mon Sep 17 00:00:00 2001 From: Russell Cattelan Date: Thu, 9 Nov 2006 11:28:08 -0500 Subject: [GFS2] Fix race in logging code The log lock is dropped prior to io submittion, but this exposes a hole in which the log data structures may be going away due to a truncate. Store the buffer head in a local pointer prior to dropping the lock and relay on the buffer_head lock for consitency on the buffer head. Signed-Off-By: Russell Cattelan Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 8a654cd..4d7f94d 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -509,7 +509,7 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp) { LIST_HEAD(started); struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt; - struct buffer_head *bh = NULL; + struct buffer_head *bh = NULL,*bh1 = NULL; unsigned int offset = sizeof(struct gfs2_log_descriptor); struct gfs2_log_descriptor *ld; unsigned int limit; @@ -537,8 +537,13 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp) list_for_each_entry_safe_continue(bd1, bdt, &sdp->sd_log_le_databuf, bd_le.le_list) { + /* store off the buffer head in a local ptr since + * gfs2_bufdata might change when we drop the log lock + */ + bh1 = bd1->bd_bh; + /* An ordered write buffer */ - if (bd1->bd_bh && !buffer_pinned(bd1->bd_bh)) { + if (bh1 && !buffer_pinned(bh1)) { list_move(&bd1->bd_le.le_list, &started); if (bd1 == bd2) { bd2 = NULL; @@ -547,20 +552,21 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp) bd_le.le_list); } total_dbuf--; - if (bd1->bd_bh) { - get_bh(bd1->bd_bh); - if (buffer_dirty(bd1->bd_bh)) { + if (bh1) { + if (buffer_dirty(bh1)) { + get_bh(bh1); + gfs2_log_unlock(sdp); - wait_on_buffer(bd1->bd_bh); - ll_rw_block(WRITE, 1, - &bd1->bd_bh); + + ll_rw_block(SWRITE, 1, &bh1); + brelse(bh1); + gfs2_log_lock(sdp); } - brelse(bd1->bd_bh); continue; } continue; - } else if (bd1->bd_bh) { /* A journaled buffer */ + } else if (bh1) { /* A journaled buffer */ int magic; gfs2_log_unlock(sdp); if (!bh) { @@ -582,16 +588,16 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp) ld->ld_data2 = cpu_to_be32(0); memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); } - magic = gfs2_check_magic(bd1->bd_bh); - *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); + magic = gfs2_check_magic(bh1); + *ptr++ = cpu_to_be64(bh1->b_blocknr); *ptr++ = cpu_to_be64((__u64)magic); - clear_buffer_escaped(bd1->bd_bh); + clear_buffer_escaped(bh1); if (unlikely(magic != 0)) - set_buffer_escaped(bd1->bd_bh); + set_buffer_escaped(bh1); gfs2_log_lock(sdp); if (n++ > num) break; - } else if (!bd1->bd_bh) { + } else if (!bh1) { total_dbuf--; sdp->sd_log_num_databuf--; list_del_init(&bd1->bd_le.le_list); -- cgit v0.10.2 From 61057c6bb3a3d14cf2bea6ca20dc6d367e1d852e Mon Sep 17 00:00:00 2001 From: Russell Cattelan Date: Thu, 9 Nov 2006 11:42:33 -0500 Subject: [GFS2] Remove unused zero_readpage from stuffed_readpage Stuffed files only consist of a maximum of (gfs2 block size - sizeof(struct gfs2_dinode)) bytes. Since the gfs2 block size is always less than page size, we will never see a call to stuffed_readpage for anything other than the first page in the file. Signed-off-by: Russell Cattelan Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 3822189..2f7ef98 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -156,19 +156,6 @@ out_ignore: return 0; } -static int zero_readpage(struct page *page) -{ - void *kaddr; - - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr, 0, PAGE_CACHE_SIZE); - kunmap_atomic(kaddr, KM_USER0); - - SetPageUptodate(page); - - return 0; -} - /** * stuffed_readpage - Fill in a Linux page with stuffed file data * @ip: the inode @@ -183,9 +170,7 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page) void *kaddr; int error; - /* Only the first page of a stuffed file might contain data */ - if (unlikely(page->index)) - return zero_readpage(page); + BUG_ON(page->index); error = gfs2_meta_inode_buffer(ip, &dibh); if (error) @@ -737,6 +722,9 @@ int gfs2_releasepage(struct page *page, gfp_t gfp_mask) if (!atomic_read(&aspace->i_writecount)) return 0; + if (!(gfp_mask & __GFP_WAIT)) + return 0; + if (time_after_eq(jiffies, t)) { stuck_releasepage(bh); /* should we withdraw here? */ -- cgit v0.10.2 From fdda387f73947e6ae511ec601f5b3c6fbb582aac Mon Sep 17 00:00:00 2001 From: Patrick Caulfield Date: Thu, 2 Nov 2006 11:19:21 -0500 Subject: [DLM] Add support for tcp communications The following patch adds a TCP based communications layer to the DLM which is compile time selectable. The existing SCTP layer gives the advantage of allowing multihoming, whereas the TCP layer has been heavily tested in previous versions of the DLM and is known to be robust and therefore can be used as a baseline for performance testing. Signed-off-by: Patrick Caulfield Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/Kconfig b/fs/dlm/Kconfig index 81b2c64..c5985b8 100644 --- a/fs/dlm/Kconfig +++ b/fs/dlm/Kconfig @@ -9,6 +9,23 @@ config DLM A general purpose distributed lock manager for kernel or userspace applications. +choice + prompt "Select DLM communications protocol" + depends on DLM + default DLM_TCP + help + The DLM Can use TCP or SCTP for it's network communications. + SCTP supports multi-homed operations whereas TCP doesn't. + However, SCTP seems to have stability problems at the moment. + +config DLM_TCP + bool "TCP/IP" + +config DLM_SCTP + bool "SCTP" + +endchoice + config DLM_DEBUG bool "DLM debugging" depends on DLM diff --git a/fs/dlm/Makefile b/fs/dlm/Makefile index 1832e02..6538894 100644 --- a/fs/dlm/Makefile +++ b/fs/dlm/Makefile @@ -4,7 +4,6 @@ dlm-y := ast.o \ dir.o \ lock.o \ lockspace.o \ - lowcomms.o \ main.o \ member.o \ memory.o \ @@ -17,3 +16,6 @@ dlm-y := ast.o \ util.o dlm-$(CONFIG_DLM_DEBUG) += debug_fs.o +dlm-$(CONFIG_DLM_TCP) += lowcomms-tcp.o + +dlm-$(CONFIG_DLM_SCTP) += lowcomms-sctp.o \ No newline at end of file diff --git a/fs/dlm/lowcomms-sctp.c b/fs/dlm/lowcomms-sctp.c new file mode 100644 index 0000000..6da6b14 --- /dev/null +++ b/fs/dlm/lowcomms-sctp.c @@ -0,0 +1,1239 @@ +/****************************************************************************** +******************************************************************************* +** +** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. +** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. +** +** This copyrighted material is made available to anyone wishing to use, +** modify, copy, or redistribute it subject to the terms and conditions +** of the GNU General Public License v.2. +** +******************************************************************************* +******************************************************************************/ + +/* + * lowcomms.c + * + * This is the "low-level" comms layer. + * + * It is responsible for sending/receiving messages + * from other nodes in the cluster. + * + * Cluster nodes are referred to by their nodeids. nodeids are + * simply 32 bit numbers to the locking module - if they need to + * be expanded for the cluster infrastructure then that is it's + * responsibility. It is this layer's + * responsibility to resolve these into IP address or + * whatever it needs for inter-node communication. + * + * The comms level is two kernel threads that deal mainly with + * the receiving of messages from other nodes and passing them + * up to the mid-level comms layer (which understands the + * message format) for execution by the locking core, and + * a send thread which does all the setting up of connections + * to remote nodes and the sending of data. Threads are not allowed + * to send their own data because it may cause them to wait in times + * of high load. Also, this way, the sending thread can collect together + * messages bound for one node and send them in one block. + * + * I don't see any problem with the recv thread executing the locking + * code on behalf of remote processes as the locking code is + * short, efficient and never (well, hardly ever) waits. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "dlm_internal.h" +#include "lowcomms.h" +#include "config.h" +#include "midcomms.h" + +static struct sockaddr_storage *dlm_local_addr[DLM_MAX_ADDR_COUNT]; +static int dlm_local_count; +static int dlm_local_nodeid; + +/* One of these per connected node */ + +#define NI_INIT_PENDING 1 +#define NI_WRITE_PENDING 2 + +struct nodeinfo { + spinlock_t lock; + sctp_assoc_t assoc_id; + unsigned long flags; + struct list_head write_list; /* nodes with pending writes */ + struct list_head writequeue; /* outgoing writequeue_entries */ + spinlock_t writequeue_lock; + int nodeid; +}; + +static DEFINE_IDR(nodeinfo_idr); +static struct rw_semaphore nodeinfo_lock; +static int max_nodeid; + +struct cbuf { + unsigned base; + unsigned len; + unsigned mask; +}; + +/* Just the one of these, now. But this struct keeps + the connection-specific variables together */ + +#define CF_READ_PENDING 1 + +struct connection { + struct socket *sock; + unsigned long flags; + struct page *rx_page; + atomic_t waiting_requests; + struct cbuf cb; + int eagain_flag; +}; + +/* An entry waiting to be sent */ + +struct writequeue_entry { + struct list_head list; + struct page *page; + int offset; + int len; + int end; + int users; + struct nodeinfo *ni; +}; + +#define CBUF_ADD(cb, n) do { (cb)->len += n; } while(0) +#define CBUF_EMPTY(cb) ((cb)->len == 0) +#define CBUF_MAY_ADD(cb, n) (((cb)->len + (n)) < ((cb)->mask + 1)) +#define CBUF_DATA(cb) (((cb)->base + (cb)->len) & (cb)->mask) + +#define CBUF_INIT(cb, size) \ +do { \ + (cb)->base = (cb)->len = 0; \ + (cb)->mask = ((size)-1); \ +} while(0) + +#define CBUF_EAT(cb, n) \ +do { \ + (cb)->len -= (n); \ + (cb)->base += (n); \ + (cb)->base &= (cb)->mask; \ +} while(0) + + +/* List of nodes which have writes pending */ +static struct list_head write_nodes; +static spinlock_t write_nodes_lock; + +/* Maximum number of incoming messages to process before + * doing a schedule() + */ +#define MAX_RX_MSG_COUNT 25 + +/* Manage daemons */ +static struct task_struct *recv_task; +static struct task_struct *send_task; +static wait_queue_head_t lowcomms_recv_wait; +static atomic_t accepting; + +/* The SCTP connection */ +static struct connection sctp_con; + + +static int nodeid_to_addr(int nodeid, struct sockaddr *retaddr) +{ + struct sockaddr_storage addr; + int error; + + if (!dlm_local_count) + return -1; + + error = dlm_nodeid_to_addr(nodeid, &addr); + if (error) + return error; + + if (dlm_local_addr[0]->ss_family == AF_INET) { + struct sockaddr_in *in4 = (struct sockaddr_in *) &addr; + struct sockaddr_in *ret4 = (struct sockaddr_in *) retaddr; + ret4->sin_addr.s_addr = in4->sin_addr.s_addr; + } else { + struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &addr; + struct sockaddr_in6 *ret6 = (struct sockaddr_in6 *) retaddr; + memcpy(&ret6->sin6_addr, &in6->sin6_addr, + sizeof(in6->sin6_addr)); + } + + return 0; +} + +static struct nodeinfo *nodeid2nodeinfo(int nodeid, gfp_t alloc) +{ + struct nodeinfo *ni; + int r; + int n; + + down_read(&nodeinfo_lock); + ni = idr_find(&nodeinfo_idr, nodeid); + up_read(&nodeinfo_lock); + + if (!ni && alloc) { + down_write(&nodeinfo_lock); + + ni = idr_find(&nodeinfo_idr, nodeid); + if (ni) + goto out_up; + + r = idr_pre_get(&nodeinfo_idr, alloc); + if (!r) + goto out_up; + + ni = kmalloc(sizeof(struct nodeinfo), alloc); + if (!ni) + goto out_up; + + r = idr_get_new_above(&nodeinfo_idr, ni, nodeid, &n); + if (r) { + kfree(ni); + ni = NULL; + goto out_up; + } + if (n != nodeid) { + idr_remove(&nodeinfo_idr, n); + kfree(ni); + ni = NULL; + goto out_up; + } + memset(ni, 0, sizeof(struct nodeinfo)); + spin_lock_init(&ni->lock); + INIT_LIST_HEAD(&ni->writequeue); + spin_lock_init(&ni->writequeue_lock); + ni->nodeid = nodeid; + + if (nodeid > max_nodeid) + max_nodeid = nodeid; + out_up: + up_write(&nodeinfo_lock); + } + + return ni; +} + +/* Don't call this too often... */ +static struct nodeinfo *assoc2nodeinfo(sctp_assoc_t assoc) +{ + int i; + struct nodeinfo *ni; + + for (i=1; i<=max_nodeid; i++) { + ni = nodeid2nodeinfo(i, 0); + if (ni && ni->assoc_id == assoc) + return ni; + } + return NULL; +} + +/* Data or notification available on socket */ +static void lowcomms_data_ready(struct sock *sk, int count_unused) +{ + atomic_inc(&sctp_con.waiting_requests); + if (test_and_set_bit(CF_READ_PENDING, &sctp_con.flags)) + return; + + wake_up_interruptible(&lowcomms_recv_wait); +} + + +/* Add the port number to an IP6 or 4 sockaddr and return the address length. + Also padd out the struct with zeros to make comparisons meaningful */ + +static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, + int *addr_len) +{ + struct sockaddr_in *local4_addr; + struct sockaddr_in6 *local6_addr; + + if (!dlm_local_count) + return; + + if (!port) { + if (dlm_local_addr[0]->ss_family == AF_INET) { + local4_addr = (struct sockaddr_in *)dlm_local_addr[0]; + port = be16_to_cpu(local4_addr->sin_port); + } else { + local6_addr = (struct sockaddr_in6 *)dlm_local_addr[0]; + port = be16_to_cpu(local6_addr->sin6_port); + } + } + + saddr->ss_family = dlm_local_addr[0]->ss_family; + if (dlm_local_addr[0]->ss_family == AF_INET) { + struct sockaddr_in *in4_addr = (struct sockaddr_in *)saddr; + in4_addr->sin_port = cpu_to_be16(port); + memset(&in4_addr->sin_zero, 0, sizeof(in4_addr->sin_zero)); + memset(in4_addr+1, 0, sizeof(struct sockaddr_storage) - + sizeof(struct sockaddr_in)); + *addr_len = sizeof(struct sockaddr_in); + } else { + struct sockaddr_in6 *in6_addr = (struct sockaddr_in6 *)saddr; + in6_addr->sin6_port = cpu_to_be16(port); + memset(in6_addr+1, 0, sizeof(struct sockaddr_storage) - + sizeof(struct sockaddr_in6)); + *addr_len = sizeof(struct sockaddr_in6); + } +} + +/* Close the connection and tidy up */ +static void close_connection(void) +{ + if (sctp_con.sock) { + sock_release(sctp_con.sock); + sctp_con.sock = NULL; + } + + if (sctp_con.rx_page) { + __free_page(sctp_con.rx_page); + sctp_con.rx_page = NULL; + } +} + +/* We only send shutdown messages to nodes that are not part of the cluster */ +static void send_shutdown(sctp_assoc_t associd) +{ + static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; + struct msghdr outmessage; + struct cmsghdr *cmsg; + struct sctp_sndrcvinfo *sinfo; + int ret; + + outmessage.msg_name = NULL; + outmessage.msg_namelen = 0; + outmessage.msg_control = outcmsg; + outmessage.msg_controllen = sizeof(outcmsg); + outmessage.msg_flags = MSG_EOR; + + cmsg = CMSG_FIRSTHDR(&outmessage); + cmsg->cmsg_level = IPPROTO_SCTP; + cmsg->cmsg_type = SCTP_SNDRCV; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); + outmessage.msg_controllen = cmsg->cmsg_len; + sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); + + sinfo->sinfo_flags |= MSG_EOF; + sinfo->sinfo_assoc_id = associd; + + ret = kernel_sendmsg(sctp_con.sock, &outmessage, NULL, 0, 0); + + if (ret != 0) + log_print("send EOF to node failed: %d", ret); +} + + +/* INIT failed but we don't know which node... + restart INIT on all pending nodes */ +static void init_failed(void) +{ + int i; + struct nodeinfo *ni; + + for (i=1; i<=max_nodeid; i++) { + ni = nodeid2nodeinfo(i, 0); + if (!ni) + continue; + + if (test_and_clear_bit(NI_INIT_PENDING, &ni->flags)) { + ni->assoc_id = 0; + if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { + spin_lock_bh(&write_nodes_lock); + list_add_tail(&ni->write_list, &write_nodes); + spin_unlock_bh(&write_nodes_lock); + } + } + } + wake_up_process(send_task); +} + +/* Something happened to an association */ +static void process_sctp_notification(struct msghdr *msg, char *buf) +{ + union sctp_notification *sn = (union sctp_notification *)buf; + + if (sn->sn_header.sn_type == SCTP_ASSOC_CHANGE) { + switch (sn->sn_assoc_change.sac_state) { + + case SCTP_COMM_UP: + case SCTP_RESTART: + { + /* Check that the new node is in the lockspace */ + struct sctp_prim prim; + mm_segment_t fs; + int nodeid; + int prim_len, ret; + int addr_len; + struct nodeinfo *ni; + + /* This seems to happen when we received a connection + * too early... or something... anyway, it happens but + * we always seem to get a real message too, see + * receive_from_sock */ + + if ((int)sn->sn_assoc_change.sac_assoc_id <= 0) { + log_print("COMM_UP for invalid assoc ID %d", + (int)sn->sn_assoc_change.sac_assoc_id); + init_failed(); + return; + } + memset(&prim, 0, sizeof(struct sctp_prim)); + prim_len = sizeof(struct sctp_prim); + prim.ssp_assoc_id = sn->sn_assoc_change.sac_assoc_id; + + fs = get_fs(); + set_fs(get_ds()); + ret = sctp_con.sock->ops->getsockopt(sctp_con.sock, + IPPROTO_SCTP, SCTP_PRIMARY_ADDR, + (char*)&prim, &prim_len); + set_fs(fs); + if (ret < 0) { + struct nodeinfo *ni; + + log_print("getsockopt/sctp_primary_addr on " + "new assoc %d failed : %d", + (int)sn->sn_assoc_change.sac_assoc_id, ret); + + /* Retry INIT later */ + ni = assoc2nodeinfo(sn->sn_assoc_change.sac_assoc_id); + if (ni) + clear_bit(NI_INIT_PENDING, &ni->flags); + return; + } + make_sockaddr(&prim.ssp_addr, 0, &addr_len); + if (dlm_addr_to_nodeid(&prim.ssp_addr, &nodeid)) { + log_print("reject connect from unknown addr"); + send_shutdown(prim.ssp_assoc_id); + return; + } + + ni = nodeid2nodeinfo(nodeid, GFP_KERNEL); + if (!ni) + return; + + /* Save the assoc ID */ + spin_lock(&ni->lock); + ni->assoc_id = sn->sn_assoc_change.sac_assoc_id; + spin_unlock(&ni->lock); + + log_print("got new/restarted association %d nodeid %d", + (int)sn->sn_assoc_change.sac_assoc_id, nodeid); + + /* Send any pending writes */ + clear_bit(NI_INIT_PENDING, &ni->flags); + if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { + spin_lock_bh(&write_nodes_lock); + list_add_tail(&ni->write_list, &write_nodes); + spin_unlock_bh(&write_nodes_lock); + } + wake_up_process(send_task); + } + break; + + case SCTP_COMM_LOST: + case SCTP_SHUTDOWN_COMP: + { + struct nodeinfo *ni; + + ni = assoc2nodeinfo(sn->sn_assoc_change.sac_assoc_id); + if (ni) { + spin_lock(&ni->lock); + ni->assoc_id = 0; + spin_unlock(&ni->lock); + } + } + break; + + /* We don't know which INIT failed, so clear the PENDING flags + * on them all. if assoc_id is zero then it will then try + * again */ + + case SCTP_CANT_STR_ASSOC: + { + log_print("Can't start SCTP association - retrying"); + init_failed(); + } + break; + + default: + log_print("unexpected SCTP assoc change id=%d state=%d", + (int)sn->sn_assoc_change.sac_assoc_id, + sn->sn_assoc_change.sac_state); + } + } +} + +/* Data received from remote end */ +static int receive_from_sock(void) +{ + int ret = 0; + struct msghdr msg; + struct kvec iov[2]; + unsigned len; + int r; + struct sctp_sndrcvinfo *sinfo; + struct cmsghdr *cmsg; + struct nodeinfo *ni; + + /* These two are marginally too big for stack allocation, but this + * function is (currently) only called by dlm_recvd so static should be + * OK. + */ + static struct sockaddr_storage msgname; + static char incmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; + + if (sctp_con.sock == NULL) + goto out; + + if (sctp_con.rx_page == NULL) { + /* + * This doesn't need to be atomic, but I think it should + * improve performance if it is. + */ + sctp_con.rx_page = alloc_page(GFP_ATOMIC); + if (sctp_con.rx_page == NULL) + goto out_resched; + CBUF_INIT(&sctp_con.cb, PAGE_CACHE_SIZE); + } + + memset(&incmsg, 0, sizeof(incmsg)); + memset(&msgname, 0, sizeof(msgname)); + + memset(incmsg, 0, sizeof(incmsg)); + msg.msg_name = &msgname; + msg.msg_namelen = sizeof(msgname); + msg.msg_flags = 0; + msg.msg_control = incmsg; + msg.msg_controllen = sizeof(incmsg); + msg.msg_iovlen = 1; + + /* I don't see why this circular buffer stuff is necessary for SCTP + * which is a packet-based protocol, but the whole thing breaks under + * load without it! The overhead is minimal (and is in the TCP lowcomms + * anyway, of course) so I'll leave it in until I can figure out what's + * really happening. + */ + + /* + * iov[0] is the bit of the circular buffer between the current end + * point (cb.base + cb.len) and the end of the buffer. + */ + iov[0].iov_len = sctp_con.cb.base - CBUF_DATA(&sctp_con.cb); + iov[0].iov_base = page_address(sctp_con.rx_page) + + CBUF_DATA(&sctp_con.cb); + iov[1].iov_len = 0; + + /* + * iov[1] is the bit of the circular buffer between the start of the + * buffer and the start of the currently used section (cb.base) + */ + if (CBUF_DATA(&sctp_con.cb) >= sctp_con.cb.base) { + iov[0].iov_len = PAGE_CACHE_SIZE - CBUF_DATA(&sctp_con.cb); + iov[1].iov_len = sctp_con.cb.base; + iov[1].iov_base = page_address(sctp_con.rx_page); + msg.msg_iovlen = 2; + } + len = iov[0].iov_len + iov[1].iov_len; + + r = ret = kernel_recvmsg(sctp_con.sock, &msg, iov, msg.msg_iovlen, len, + MSG_NOSIGNAL | MSG_DONTWAIT); + if (ret <= 0) + goto out_close; + + msg.msg_control = incmsg; + msg.msg_controllen = sizeof(incmsg); + cmsg = CMSG_FIRSTHDR(&msg); + sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + + if (msg.msg_flags & MSG_NOTIFICATION) { + process_sctp_notification(&msg, page_address(sctp_con.rx_page)); + return 0; + } + + /* Is this a new association ? */ + ni = nodeid2nodeinfo(le32_to_cpu(sinfo->sinfo_ppid), GFP_KERNEL); + if (ni) { + ni->assoc_id = sinfo->sinfo_assoc_id; + if (test_and_clear_bit(NI_INIT_PENDING, &ni->flags)) { + + if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { + spin_lock_bh(&write_nodes_lock); + list_add_tail(&ni->write_list, &write_nodes); + spin_unlock_bh(&write_nodes_lock); + } + wake_up_process(send_task); + } + } + + /* INIT sends a message with length of 1 - ignore it */ + if (r == 1) + return 0; + + CBUF_ADD(&sctp_con.cb, ret); + ret = dlm_process_incoming_buffer(cpu_to_le32(sinfo->sinfo_ppid), + page_address(sctp_con.rx_page), + sctp_con.cb.base, sctp_con.cb.len, + PAGE_CACHE_SIZE); + if (ret < 0) + goto out_close; + CBUF_EAT(&sctp_con.cb, ret); + + out: + ret = 0; + goto out_ret; + + out_resched: + lowcomms_data_ready(sctp_con.sock->sk, 0); + ret = 0; + schedule(); + goto out_ret; + + out_close: + if (ret != -EAGAIN) + log_print("error reading from sctp socket: %d", ret); + out_ret: + return ret; +} + +/* Bind to an IP address. SCTP allows multiple address so it can do multi-homing */ +static int add_bind_addr(struct sockaddr_storage *addr, int addr_len, int num) +{ + mm_segment_t fs; + int result = 0; + + fs = get_fs(); + set_fs(get_ds()); + if (num == 1) + result = sctp_con.sock->ops->bind(sctp_con.sock, + (struct sockaddr *) addr, addr_len); + else + result = sctp_con.sock->ops->setsockopt(sctp_con.sock, SOL_SCTP, + SCTP_SOCKOPT_BINDX_ADD, (char *)addr, addr_len); + set_fs(fs); + + if (result < 0) + log_print("Can't bind to port %d addr number %d", + dlm_config.tcp_port, num); + + return result; +} + +static void init_local(void) +{ + struct sockaddr_storage sas, *addr; + int i; + + dlm_local_nodeid = dlm_our_nodeid(); + + for (i = 0; i < DLM_MAX_ADDR_COUNT - 1; i++) { + if (dlm_our_addr(&sas, i)) + break; + + addr = kmalloc(sizeof(*addr), GFP_KERNEL); + if (!addr) + break; + memcpy(addr, &sas, sizeof(*addr)); + dlm_local_addr[dlm_local_count++] = addr; + } +} + +/* Initialise SCTP socket and bind to all interfaces */ +static int init_sock(void) +{ + mm_segment_t fs; + struct socket *sock = NULL; + struct sockaddr_storage localaddr; + struct sctp_event_subscribe subscribe; + int result = -EINVAL, num = 1, i, addr_len; + + if (!dlm_local_count) { + init_local(); + if (!dlm_local_count) { + log_print("no local IP address has been set"); + goto out; + } + } + + result = sock_create_kern(dlm_local_addr[0]->ss_family, SOCK_SEQPACKET, + IPPROTO_SCTP, &sock); + if (result < 0) { + log_print("Can't create comms socket, check SCTP is loaded"); + goto out; + } + + /* Listen for events */ + memset(&subscribe, 0, sizeof(subscribe)); + subscribe.sctp_data_io_event = 1; + subscribe.sctp_association_event = 1; + subscribe.sctp_send_failure_event = 1; + subscribe.sctp_shutdown_event = 1; + subscribe.sctp_partial_delivery_event = 1; + + fs = get_fs(); + set_fs(get_ds()); + result = sock->ops->setsockopt(sock, SOL_SCTP, SCTP_EVENTS, + (char *)&subscribe, sizeof(subscribe)); + set_fs(fs); + + if (result < 0) { + log_print("Failed to set SCTP_EVENTS on socket: result=%d", + result); + goto create_delsock; + } + + /* Init con struct */ + sock->sk->sk_user_data = &sctp_con; + sctp_con.sock = sock; + sctp_con.sock->sk->sk_data_ready = lowcomms_data_ready; + + /* Bind to all interfaces. */ + for (i = 0; i < dlm_local_count; i++) { + memcpy(&localaddr, dlm_local_addr[i], sizeof(localaddr)); + make_sockaddr(&localaddr, dlm_config.tcp_port, &addr_len); + + result = add_bind_addr(&localaddr, addr_len, num); + if (result) + goto create_delsock; + ++num; + } + + result = sock->ops->listen(sock, 5); + if (result < 0) { + log_print("Can't set socket listening"); + goto create_delsock; + } + + return 0; + + create_delsock: + sock_release(sock); + sctp_con.sock = NULL; + out: + return result; +} + + +static struct writequeue_entry *new_writequeue_entry(gfp_t allocation) +{ + struct writequeue_entry *entry; + + entry = kmalloc(sizeof(struct writequeue_entry), allocation); + if (!entry) + return NULL; + + entry->page = alloc_page(allocation); + if (!entry->page) { + kfree(entry); + return NULL; + } + + entry->offset = 0; + entry->len = 0; + entry->end = 0; + entry->users = 0; + + return entry; +} + +void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc) +{ + struct writequeue_entry *e; + int offset = 0; + int users = 0; + struct nodeinfo *ni; + + if (!atomic_read(&accepting)) + return NULL; + + ni = nodeid2nodeinfo(nodeid, allocation); + if (!ni) + return NULL; + + spin_lock(&ni->writequeue_lock); + e = list_entry(ni->writequeue.prev, struct writequeue_entry, list); + if (((struct list_head *) e == &ni->writequeue) || + (PAGE_CACHE_SIZE - e->end < len)) { + e = NULL; + } else { + offset = e->end; + e->end += len; + users = e->users++; + } + spin_unlock(&ni->writequeue_lock); + + if (e) { + got_one: + if (users == 0) + kmap(e->page); + *ppc = page_address(e->page) + offset; + return e; + } + + e = new_writequeue_entry(allocation); + if (e) { + spin_lock(&ni->writequeue_lock); + offset = e->end; + e->end += len; + e->ni = ni; + users = e->users++; + list_add_tail(&e->list, &ni->writequeue); + spin_unlock(&ni->writequeue_lock); + goto got_one; + } + return NULL; +} + +void dlm_lowcomms_commit_buffer(void *arg) +{ + struct writequeue_entry *e = (struct writequeue_entry *) arg; + int users; + struct nodeinfo *ni = e->ni; + + if (!atomic_read(&accepting)) + return; + + spin_lock(&ni->writequeue_lock); + users = --e->users; + if (users) + goto out; + e->len = e->end - e->offset; + kunmap(e->page); + spin_unlock(&ni->writequeue_lock); + + if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { + spin_lock_bh(&write_nodes_lock); + list_add_tail(&ni->write_list, &write_nodes); + spin_unlock_bh(&write_nodes_lock); + wake_up_process(send_task); + } + return; + + out: + spin_unlock(&ni->writequeue_lock); + return; +} + +static void free_entry(struct writequeue_entry *e) +{ + __free_page(e->page); + kfree(e); +} + +/* Initiate an SCTP association. In theory we could just use sendmsg() on + the first IP address and it should work, but this allows us to set up the + association before sending any valuable data that we can't afford to lose. + It also keeps the send path clean as it can now always use the association ID */ +static void initiate_association(int nodeid) +{ + struct sockaddr_storage rem_addr; + static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; + struct msghdr outmessage; + struct cmsghdr *cmsg; + struct sctp_sndrcvinfo *sinfo; + int ret; + int addrlen; + char buf[1]; + struct kvec iov[1]; + struct nodeinfo *ni; + + log_print("Initiating association with node %d", nodeid); + + ni = nodeid2nodeinfo(nodeid, GFP_KERNEL); + if (!ni) + return; + + if (nodeid_to_addr(nodeid, (struct sockaddr *)&rem_addr)) { + log_print("no address for nodeid %d", nodeid); + return; + } + + make_sockaddr(&rem_addr, dlm_config.tcp_port, &addrlen); + + outmessage.msg_name = &rem_addr; + outmessage.msg_namelen = addrlen; + outmessage.msg_control = outcmsg; + outmessage.msg_controllen = sizeof(outcmsg); + outmessage.msg_flags = MSG_EOR; + + iov[0].iov_base = buf; + iov[0].iov_len = 1; + + /* Real INIT messages seem to cause trouble. Just send a 1 byte message + we can afford to lose */ + cmsg = CMSG_FIRSTHDR(&outmessage); + cmsg->cmsg_level = IPPROTO_SCTP; + cmsg->cmsg_type = SCTP_SNDRCV; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); + sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); + sinfo->sinfo_ppid = cpu_to_le32(dlm_local_nodeid); + + outmessage.msg_controllen = cmsg->cmsg_len; + ret = kernel_sendmsg(sctp_con.sock, &outmessage, iov, 1, 1); + if (ret < 0) { + log_print("send INIT to node failed: %d", ret); + /* Try again later */ + clear_bit(NI_INIT_PENDING, &ni->flags); + } +} + +/* Send a message */ +static int send_to_sock(struct nodeinfo *ni) +{ + int ret = 0; + struct writequeue_entry *e; + int len, offset; + struct msghdr outmsg; + static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; + struct cmsghdr *cmsg; + struct sctp_sndrcvinfo *sinfo; + struct kvec iov; + + /* See if we need to init an association before we start + sending precious messages */ + spin_lock(&ni->lock); + if (!ni->assoc_id && !test_and_set_bit(NI_INIT_PENDING, &ni->flags)) { + spin_unlock(&ni->lock); + initiate_association(ni->nodeid); + return 0; + } + spin_unlock(&ni->lock); + + outmsg.msg_name = NULL; /* We use assoc_id */ + outmsg.msg_namelen = 0; + outmsg.msg_control = outcmsg; + outmsg.msg_controllen = sizeof(outcmsg); + outmsg.msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL | MSG_EOR; + + cmsg = CMSG_FIRSTHDR(&outmsg); + cmsg->cmsg_level = IPPROTO_SCTP; + cmsg->cmsg_type = SCTP_SNDRCV; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); + sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); + sinfo->sinfo_ppid = cpu_to_le32(dlm_local_nodeid); + sinfo->sinfo_assoc_id = ni->assoc_id; + outmsg.msg_controllen = cmsg->cmsg_len; + + spin_lock(&ni->writequeue_lock); + for (;;) { + if (list_empty(&ni->writequeue)) + break; + e = list_entry(ni->writequeue.next, struct writequeue_entry, + list); + len = e->len; + offset = e->offset; + BUG_ON(len == 0 && e->users == 0); + spin_unlock(&ni->writequeue_lock); + kmap(e->page); + + ret = 0; + if (len) { + iov.iov_base = page_address(e->page)+offset; + iov.iov_len = len; + + ret = kernel_sendmsg(sctp_con.sock, &outmsg, &iov, 1, + len); + if (ret == -EAGAIN) { + sctp_con.eagain_flag = 1; + goto out; + } else if (ret < 0) + goto send_error; + } else { + /* Don't starve people filling buffers */ + schedule(); + } + + spin_lock(&ni->writequeue_lock); + e->offset += ret; + e->len -= ret; + + if (e->len == 0 && e->users == 0) { + list_del(&e->list); + free_entry(e); + continue; + } + } + spin_unlock(&ni->writequeue_lock); + out: + return ret; + + send_error: + log_print("Error sending to node %d %d", ni->nodeid, ret); + spin_lock(&ni->lock); + if (!test_and_set_bit(NI_INIT_PENDING, &ni->flags)) { + ni->assoc_id = 0; + spin_unlock(&ni->lock); + initiate_association(ni->nodeid); + } else + spin_unlock(&ni->lock); + + return ret; +} + +/* Try to send any messages that are pending */ +static void process_output_queue(void) +{ + struct list_head *list; + struct list_head *temp; + + spin_lock_bh(&write_nodes_lock); + list_for_each_safe(list, temp, &write_nodes) { + struct nodeinfo *ni = + list_entry(list, struct nodeinfo, write_list); + clear_bit(NI_WRITE_PENDING, &ni->flags); + list_del(&ni->write_list); + + spin_unlock_bh(&write_nodes_lock); + + send_to_sock(ni); + spin_lock_bh(&write_nodes_lock); + } + spin_unlock_bh(&write_nodes_lock); +} + +/* Called after we've had -EAGAIN and been woken up */ +static void refill_write_queue(void) +{ + int i; + + for (i=1; i<=max_nodeid; i++) { + struct nodeinfo *ni = nodeid2nodeinfo(i, 0); + + if (ni) { + if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { + spin_lock_bh(&write_nodes_lock); + list_add_tail(&ni->write_list, &write_nodes); + spin_unlock_bh(&write_nodes_lock); + } + } + } +} + +static void clean_one_writequeue(struct nodeinfo *ni) +{ + struct list_head *list; + struct list_head *temp; + + spin_lock(&ni->writequeue_lock); + list_for_each_safe(list, temp, &ni->writequeue) { + struct writequeue_entry *e = + list_entry(list, struct writequeue_entry, list); + list_del(&e->list); + free_entry(e); + } + spin_unlock(&ni->writequeue_lock); +} + +static void clean_writequeues(void) +{ + int i; + + for (i=1; i<=max_nodeid; i++) { + struct nodeinfo *ni = nodeid2nodeinfo(i, 0); + if (ni) + clean_one_writequeue(ni); + } +} + + +static void dealloc_nodeinfo(void) +{ + int i; + + for (i=1; i<=max_nodeid; i++) { + struct nodeinfo *ni = nodeid2nodeinfo(i, 0); + if (ni) { + idr_remove(&nodeinfo_idr, i); + kfree(ni); + } + } +} + +int dlm_lowcomms_close(int nodeid) +{ + struct nodeinfo *ni; + + ni = nodeid2nodeinfo(nodeid, 0); + if (!ni) + return -1; + + spin_lock(&ni->lock); + if (ni->assoc_id) { + ni->assoc_id = 0; + /* Don't send shutdown here, sctp will just queue it + till the node comes back up! */ + } + spin_unlock(&ni->lock); + + clean_one_writequeue(ni); + clear_bit(NI_INIT_PENDING, &ni->flags); + return 0; +} + +static int write_list_empty(void) +{ + int status; + + spin_lock_bh(&write_nodes_lock); + status = list_empty(&write_nodes); + spin_unlock_bh(&write_nodes_lock); + + return status; +} + +static int dlm_recvd(void *data) +{ + DECLARE_WAITQUEUE(wait, current); + + while (!kthread_should_stop()) { + int count = 0; + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&lowcomms_recv_wait, &wait); + if (!test_bit(CF_READ_PENDING, &sctp_con.flags)) + schedule(); + remove_wait_queue(&lowcomms_recv_wait, &wait); + set_current_state(TASK_RUNNING); + + if (test_and_clear_bit(CF_READ_PENDING, &sctp_con.flags)) { + int ret; + + do { + ret = receive_from_sock(); + + /* Don't starve out everyone else */ + if (++count >= MAX_RX_MSG_COUNT) { + schedule(); + count = 0; + } + } while (!kthread_should_stop() && ret >=0); + } + schedule(); + } + + return 0; +} + +static int dlm_sendd(void *data) +{ + DECLARE_WAITQUEUE(wait, current); + + add_wait_queue(sctp_con.sock->sk->sk_sleep, &wait); + + while (!kthread_should_stop()) { + set_current_state(TASK_INTERRUPTIBLE); + if (write_list_empty()) + schedule(); + set_current_state(TASK_RUNNING); + + if (sctp_con.eagain_flag) { + sctp_con.eagain_flag = 0; + refill_write_queue(); + } + process_output_queue(); + } + + remove_wait_queue(sctp_con.sock->sk->sk_sleep, &wait); + + return 0; +} + +static void daemons_stop(void) +{ + kthread_stop(recv_task); + kthread_stop(send_task); +} + +static int daemons_start(void) +{ + struct task_struct *p; + int error; + + p = kthread_run(dlm_recvd, NULL, "dlm_recvd"); + error = IS_ERR(p); + if (error) { + log_print("can't start dlm_recvd %d", error); + return error; + } + recv_task = p; + + p = kthread_run(dlm_sendd, NULL, "dlm_sendd"); + error = IS_ERR(p); + if (error) { + log_print("can't start dlm_sendd %d", error); + kthread_stop(recv_task); + return error; + } + send_task = p; + + return 0; +} + +/* + * This is quite likely to sleep... + */ +int dlm_lowcomms_start(void) +{ + int error; + + error = init_sock(); + if (error) + goto fail_sock; + error = daemons_start(); + if (error) + goto fail_sock; + atomic_set(&accepting, 1); + return 0; + + fail_sock: + close_connection(); + return error; +} + +/* Set all the activity flags to prevent any socket activity. */ + +void dlm_lowcomms_stop(void) +{ + atomic_set(&accepting, 0); + sctp_con.flags = 0x7; + daemons_stop(); + clean_writequeues(); + close_connection(); + dealloc_nodeinfo(); + max_nodeid = 0; +} + +int dlm_lowcomms_init(void) +{ + init_waitqueue_head(&lowcomms_recv_wait); + spin_lock_init(&write_nodes_lock); + INIT_LIST_HEAD(&write_nodes); + init_rwsem(&nodeinfo_lock); + return 0; +} + +void dlm_lowcomms_exit(void) +{ + int i; + + for (i = 0; i < dlm_local_count; i++) + kfree(dlm_local_addr[i]); + dlm_local_count = 0; + dlm_local_nodeid = 0; +} + diff --git a/fs/dlm/lowcomms-tcp.c b/fs/dlm/lowcomms-tcp.c new file mode 100644 index 0000000..7289e59 --- /dev/null +++ b/fs/dlm/lowcomms-tcp.c @@ -0,0 +1,1263 @@ +/****************************************************************************** +******************************************************************************* +** +** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. +** Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. +** +** This copyrighted material is made available to anyone wishing to use, +** modify, copy, or redistribute it subject to the terms and conditions +** of the GNU General Public License v.2. +** +******************************************************************************* +******************************************************************************/ + +/* + * lowcomms.c + * + * This is the "low-level" comms layer. + * + * It is responsible for sending/receiving messages + * from other nodes in the cluster. + * + * Cluster nodes are referred to by their nodeids. nodeids are + * simply 32 bit numbers to the locking module - if they need to + * be expanded for the cluster infrastructure then that is it's + * responsibility. It is this layer's + * responsibility to resolve these into IP address or + * whatever it needs for inter-node communication. + * + * The comms level is two kernel threads that deal mainly with + * the receiving of messages from other nodes and passing them + * up to the mid-level comms layer (which understands the + * message format) for execution by the locking core, and + * a send thread which does all the setting up of connections + * to remote nodes and the sending of data. Threads are not allowed + * to send their own data because it may cause them to wait in times + * of high load. Also, this way, the sending thread can collect together + * messages bound for one node and send them in one block. + * + * I don't see any problem with the recv thread executing the locking + * code on behalf of remote processes as the locking code is + * short, efficient and never waits. + * + */ + + +#include +#include +#include +#include + +#include "dlm_internal.h" +#include "lowcomms.h" +#include "midcomms.h" +#include "config.h" + +struct cbuf { + unsigned base; + unsigned len; + unsigned mask; +}; + +#ifndef FALSE +#define FALSE 0 +#define TRUE 1 +#endif +#define NODE_INCREMENT 32 + +#define CBUF_INIT(cb, size) do { (cb)->base = (cb)->len = 0; (cb)->mask = ((size)-1); } while(0) +#define CBUF_ADD(cb, n) do { (cb)->len += n; } while(0) +#define CBUF_EMPTY(cb) ((cb)->len == 0) +#define CBUF_MAY_ADD(cb, n) (((cb)->len + (n)) < ((cb)->mask + 1)) +#define CBUF_EAT(cb, n) do { (cb)->len -= (n); \ + (cb)->base += (n); (cb)->base &= (cb)->mask; } while(0) +#define CBUF_DATA(cb) (((cb)->base + (cb)->len) & (cb)->mask) + +/* Maximum number of incoming messages to process before + doing a schedule() +*/ +#define MAX_RX_MSG_COUNT 25 + +struct connection { + struct socket *sock; /* NULL if not connected */ + uint32_t nodeid; /* So we know who we are in the list */ + struct rw_semaphore sock_sem; /* Stop connect races */ + struct list_head read_list; /* On this list when ready for reading */ + struct list_head write_list; /* On this list when ready for writing */ + struct list_head state_list; /* On this list when ready to connect */ + unsigned long flags; /* bit 1,2 = We are on the read/write lists */ +#define CF_READ_PENDING 1 +#define CF_WRITE_PENDING 2 +#define CF_CONNECT_PENDING 3 +#define CF_IS_OTHERCON 4 + struct list_head writequeue; /* List of outgoing writequeue_entries */ + struct list_head listenlist; /* List of allocated listening sockets */ + spinlock_t writequeue_lock; + int (*rx_action) (struct connection *); /* What to do when active */ + struct page *rx_page; + struct cbuf cb; + int retries; + atomic_t waiting_requests; +#define MAX_CONNECT_RETRIES 3 + struct connection *othercon; +}; +#define sock2con(x) ((struct connection *)(x)->sk_user_data) + +/* An entry waiting to be sent */ +struct writequeue_entry { + struct list_head list; + struct page *page; + int offset; + int len; + int end; + int users; + struct connection *con; +}; + +static struct sockaddr_storage dlm_local_addr; + +/* Manage daemons */ +static struct task_struct *recv_task; +static struct task_struct *send_task; + +static wait_queue_t lowcomms_send_waitq_head; +static wait_queue_head_t lowcomms_send_waitq; +static wait_queue_t lowcomms_recv_waitq_head; +static wait_queue_head_t lowcomms_recv_waitq; + +/* An array of pointers to connections, indexed by NODEID */ +static struct connection **connections; +static struct semaphore connections_lock; +static kmem_cache_t *con_cache; +static int conn_array_size; +static atomic_t accepting; + +/* List of sockets that have reads pending */ +static struct list_head read_sockets; +static spinlock_t read_sockets_lock; + +/* List of sockets which have writes pending */ +static struct list_head write_sockets; +static spinlock_t write_sockets_lock; + +/* List of sockets which have connects pending */ +static struct list_head state_sockets; +static spinlock_t state_sockets_lock; + +static struct connection *nodeid2con(int nodeid, gfp_t allocation) +{ + struct connection *con = NULL; + + down(&connections_lock); + if (nodeid >= conn_array_size) { + int new_size = nodeid + NODE_INCREMENT; + struct connection **new_conns; + + new_conns = kmalloc(sizeof(struct connection *) * + new_size, allocation); + if (!new_conns) + goto finish; + + memset(new_conns, 0, sizeof(struct connection *) * new_size); + memcpy(new_conns, connections, sizeof(struct connection *) * conn_array_size); + conn_array_size = new_size; + kfree(connections); + connections = new_conns; + + } + + con = connections[nodeid]; + if (con == NULL && allocation) { + con = kmem_cache_alloc(con_cache, allocation); + if (!con) + goto finish; + + memset(con, 0, sizeof(*con)); + con->nodeid = nodeid; + init_rwsem(&con->sock_sem); + INIT_LIST_HEAD(&con->writequeue); + spin_lock_init(&con->writequeue_lock); + + connections[nodeid] = con; + } + + finish: + up(&connections_lock); + return con; +} + +/* Data available on socket or listen socket received a connect */ +static void lowcomms_data_ready(struct sock *sk, int count_unused) +{ + struct connection *con = sock2con(sk); + + atomic_inc(&con->waiting_requests); + if (test_and_set_bit(CF_READ_PENDING, &con->flags)) + return; + + spin_lock_bh(&read_sockets_lock); + list_add_tail(&con->read_list, &read_sockets); + spin_unlock_bh(&read_sockets_lock); + + wake_up_interruptible(&lowcomms_recv_waitq); +} + +static void lowcomms_write_space(struct sock *sk) +{ + struct connection *con = sock2con(sk); + + if (test_and_set_bit(CF_WRITE_PENDING, &con->flags)) + return; + + spin_lock_bh(&write_sockets_lock); + list_add_tail(&con->write_list, &write_sockets); + spin_unlock_bh(&write_sockets_lock); + + wake_up_interruptible(&lowcomms_send_waitq); +} + +static inline void lowcomms_connect_sock(struct connection *con) +{ + if (test_and_set_bit(CF_CONNECT_PENDING, &con->flags)) + return; + if (!atomic_read(&accepting)) + return; + + spin_lock_bh(&state_sockets_lock); + list_add_tail(&con->state_list, &state_sockets); + spin_unlock_bh(&state_sockets_lock); + + wake_up_interruptible(&lowcomms_send_waitq); +} + +static void lowcomms_state_change(struct sock *sk) +{ +/* struct connection *con = sock2con(sk); */ + + switch (sk->sk_state) { + case TCP_ESTABLISHED: + lowcomms_write_space(sk); + break; + + case TCP_FIN_WAIT1: + case TCP_FIN_WAIT2: + case TCP_TIME_WAIT: + case TCP_CLOSE: + case TCP_CLOSE_WAIT: + case TCP_LAST_ACK: + case TCP_CLOSING: + /* FIXME: I think this causes more trouble than it solves. + lowcomms wil reconnect anyway when there is something to + send. This just attempts reconnection if a node goes down! + */ + /* lowcomms_connect_sock(con); */ + break; + + default: + printk("dlm: lowcomms_state_change: state=%d\n", sk->sk_state); + break; + } +} + +/* Make a socket active */ +static int add_sock(struct socket *sock, struct connection *con) +{ + con->sock = sock; + + /* Install a data_ready callback */ + con->sock->sk->sk_data_ready = lowcomms_data_ready; + con->sock->sk->sk_write_space = lowcomms_write_space; + con->sock->sk->sk_state_change = lowcomms_state_change; + + return 0; +} + +/* Add the port number to an IP6 or 4 sockaddr and return the address + length */ +static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, + int *addr_len) +{ + saddr->ss_family = dlm_local_addr.ss_family; + if (saddr->ss_family == AF_INET) { + struct sockaddr_in *in4_addr = (struct sockaddr_in *)saddr; + in4_addr->sin_port = cpu_to_be16(port); + *addr_len = sizeof(struct sockaddr_in); + } + else { + struct sockaddr_in6 *in6_addr = (struct sockaddr_in6 *)saddr; + in6_addr->sin6_port = cpu_to_be16(port); + *addr_len = sizeof(struct sockaddr_in6); + } +} + +/* Close a remote connection and tidy up */ +static void close_connection(struct connection *con, int and_other) +{ + down_write(&con->sock_sem); + + if (con->sock) { + sock_release(con->sock); + con->sock = NULL; + } + if (con->othercon && and_other) { + /* Argh! recursion in kernel code! + Actually, this isn't a list so it + will only re-enter once. + */ + close_connection(con->othercon, FALSE); + } + if (con->rx_page) { + __free_page(con->rx_page); + con->rx_page = NULL; + } + con->retries = 0; + up_write(&con->sock_sem); +} + +/* Data received from remote end */ +static int receive_from_sock(struct connection *con) +{ + int ret = 0; + struct msghdr msg; + struct iovec iov[2]; + mm_segment_t fs; + unsigned len; + int r; + int call_again_soon = 0; + + down_read(&con->sock_sem); + + if (con->sock == NULL) + goto out; + if (con->rx_page == NULL) { + /* + * This doesn't need to be atomic, but I think it should + * improve performance if it is. + */ + con->rx_page = alloc_page(GFP_ATOMIC); + if (con->rx_page == NULL) + goto out_resched; + CBUF_INIT(&con->cb, PAGE_CACHE_SIZE); + } + + msg.msg_control = NULL; + msg.msg_controllen = 0; + msg.msg_iovlen = 1; + msg.msg_iov = iov; + msg.msg_name = NULL; + msg.msg_namelen = 0; + msg.msg_flags = 0; + + /* + * iov[0] is the bit of the circular buffer between the current end + * point (cb.base + cb.len) and the end of the buffer. + */ + iov[0].iov_len = con->cb.base - CBUF_DATA(&con->cb); + iov[0].iov_base = page_address(con->rx_page) + CBUF_DATA(&con->cb); + iov[1].iov_len = 0; + + /* + * iov[1] is the bit of the circular buffer between the start of the + * buffer and the start of the currently used section (cb.base) + */ + if (CBUF_DATA(&con->cb) >= con->cb.base) { + iov[0].iov_len = PAGE_CACHE_SIZE - CBUF_DATA(&con->cb); + iov[1].iov_len = con->cb.base; + iov[1].iov_base = page_address(con->rx_page); + msg.msg_iovlen = 2; + } + len = iov[0].iov_len + iov[1].iov_len; + + fs = get_fs(); + set_fs(get_ds()); + r = ret = sock_recvmsg(con->sock, &msg, len, + MSG_DONTWAIT | MSG_NOSIGNAL); + set_fs(fs); + + if (ret <= 0) + goto out_close; + if (ret == len) + call_again_soon = 1; + CBUF_ADD(&con->cb, ret); + ret = dlm_process_incoming_buffer(con->nodeid, + page_address(con->rx_page), + con->cb.base, con->cb.len, + PAGE_CACHE_SIZE); + if (ret == -EBADMSG) { + printk(KERN_INFO "dlm: lowcomms: addr=%p, base=%u, len=%u, " + "iov_len=%u, iov_base[0]=%p, read=%d\n", + page_address(con->rx_page), con->cb.base, con->cb.len, + len, iov[0].iov_base, r); + } + if (ret < 0) + goto out_close; + CBUF_EAT(&con->cb, ret); + + if (CBUF_EMPTY(&con->cb) && !call_again_soon) { + __free_page(con->rx_page); + con->rx_page = NULL; + } + + out: + if (call_again_soon) + goto out_resched; + up_read(&con->sock_sem); + ret = 0; + goto out_ret; + + out_resched: + lowcomms_data_ready(con->sock->sk, 0); + up_read(&con->sock_sem); + ret = 0; + schedule(); + goto out_ret; + + out_close: + up_read(&con->sock_sem); + if (ret != -EAGAIN && !test_bit(CF_IS_OTHERCON, &con->flags)) { + close_connection(con, FALSE); + /* Reconnect when there is something to send */ + } + + out_ret: + return ret; +} + +/* Listening socket is busy, accept a connection */ +static int accept_from_sock(struct connection *con) +{ + int result; + struct sockaddr_storage peeraddr; + struct socket *newsock; + int len; + int nodeid; + struct connection *newcon; + + memset(&peeraddr, 0, sizeof(peeraddr)); + result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, IPPROTO_TCP, &newsock); + if (result < 0) + return -ENOMEM; + + down_read(&con->sock_sem); + + result = -ENOTCONN; + if (con->sock == NULL) + goto accept_err; + + newsock->type = con->sock->type; + newsock->ops = con->sock->ops; + + result = con->sock->ops->accept(con->sock, newsock, O_NONBLOCK); + if (result < 0) + goto accept_err; + + /* Get the connected socket's peer */ + memset(&peeraddr, 0, sizeof(peeraddr)); + if (newsock->ops->getname(newsock, (struct sockaddr *)&peeraddr, + &len, 2)) { + result = -ECONNABORTED; + goto accept_err; + } + + /* Get the new node's NODEID */ + make_sockaddr(&peeraddr, 0, &len); + if (dlm_addr_to_nodeid(&peeraddr, &nodeid)) { + printk("dlm: connect from non cluster node\n"); + sock_release(newsock); + up_read(&con->sock_sem); + return -1; + } + + log_print("got connection from %d", nodeid); + + /* Check to see if we already have a connection to this node. This + * could happen if the two nodes initiate a connection at roughly + * the same time and the connections cross on the wire. + * TEMPORARY FIX: + * In this case we store the incoming one in "othercon" + */ + newcon = nodeid2con(nodeid, GFP_KERNEL); + if (!newcon) { + result = -ENOMEM; + goto accept_err; + } + down_write(&newcon->sock_sem); + if (newcon->sock) { + struct connection *othercon = newcon->othercon; + + if (!othercon) { + othercon = kmem_cache_alloc(con_cache, GFP_KERNEL); + if (!othercon) { + printk("dlm: failed to allocate incoming socket\n"); + up_write(&newcon->sock_sem); + result = -ENOMEM; + goto accept_err; + } + memset(othercon, 0, sizeof(*othercon)); + othercon->nodeid = nodeid; + othercon->rx_action = receive_from_sock; + init_rwsem(&othercon->sock_sem); + set_bit(CF_IS_OTHERCON, &othercon->flags); + newcon->othercon = othercon; + } + othercon->sock = newsock; + newsock->sk->sk_user_data = othercon; + add_sock(newsock, othercon); + } + else { + newsock->sk->sk_user_data = newcon; + newcon->rx_action = receive_from_sock; + add_sock(newsock, newcon); + + } + + up_write(&newcon->sock_sem); + + /* + * Add it to the active queue in case we got data + * beween processing the accept adding the socket + * to the read_sockets list + */ + lowcomms_data_ready(newsock->sk, 0); + up_read(&con->sock_sem); + + return 0; + + accept_err: + up_read(&con->sock_sem); + sock_release(newsock); + + if (result != -EAGAIN) + printk("dlm: error accepting connection from node: %d\n", result); + return result; +} + +/* Connect a new socket to its peer */ +static int connect_to_sock(struct connection *con) +{ + int result = -EHOSTUNREACH; + struct sockaddr_storage saddr; + int addr_len; + struct socket *sock; + + if (con->nodeid == 0) { + log_print("attempt to connect sock 0 foiled"); + return 0; + } + + down_write(&con->sock_sem); + if (con->retries++ > MAX_CONNECT_RETRIES) + goto out; + + /* Some odd races can cause double-connects, ignore them */ + if (con->sock) { + result = 0; + goto out; + } + + /* Create a socket to communicate with */ + result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, IPPROTO_TCP, &sock); + if (result < 0) + goto out_err; + + memset(&saddr, 0, sizeof(saddr)); + if (dlm_nodeid_to_addr(con->nodeid, &saddr)) + goto out_err; + + sock->sk->sk_user_data = con; + con->rx_action = receive_from_sock; + + make_sockaddr(&saddr, dlm_config.tcp_port, &addr_len); + + add_sock(sock, con); + + log_print("connecting to %d", con->nodeid); + result = + sock->ops->connect(sock, (struct sockaddr *)&saddr, addr_len, + O_NONBLOCK); + if (result == -EINPROGRESS) + result = 0; + if (result != 0) + goto out_err; + + out: + up_write(&con->sock_sem); + /* + * Returning an error here means we've given up trying to connect to + * a remote node, otherwise we return 0 and reschedule the connetion + * attempt + */ + return result; + + out_err: + if (con->sock) { + sock_release(con->sock); + con->sock = NULL; + } + /* + * Some errors are fatal and this list might need adjusting. For other + * errors we try again until the max number of retries is reached. + */ + if (result != -EHOSTUNREACH && result != -ENETUNREACH && + result != -ENETDOWN && result != EINVAL + && result != -EPROTONOSUPPORT) { + lowcomms_connect_sock(con); + result = 0; + } + goto out; +} + +static struct socket *create_listen_sock(struct connection *con, struct sockaddr_storage *saddr) +{ + struct socket *sock = NULL; + mm_segment_t fs; + int result = 0; + int one = 1; + int addr_len; + + if (dlm_local_addr.ss_family == AF_INET) + addr_len = sizeof(struct sockaddr_in); + else + addr_len = sizeof(struct sockaddr_in6); + + /* Create a socket to communicate with */ + result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, IPPROTO_TCP, &sock); + if (result < 0) { + printk("dlm: Can't create listening comms socket\n"); + goto create_out; + } + + fs = get_fs(); + set_fs(get_ds()); + result = sock_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one)); + set_fs(fs); + if (result < 0) { + printk("dlm: Failed to set SO_REUSEADDR on socket: result=%d\n",result); + } + sock->sk->sk_user_data = con; + con->rx_action = accept_from_sock; + con->sock = sock; + + /* Bind to our port */ + make_sockaddr(saddr, dlm_config.tcp_port, &addr_len); + result = sock->ops->bind(sock, (struct sockaddr *) saddr, addr_len); + if (result < 0) { + printk("dlm: Can't bind to port %d\n", dlm_config.tcp_port); + sock_release(sock); + sock = NULL; + con->sock = NULL; + goto create_out; + } + + fs = get_fs(); + set_fs(get_ds()); + + result = sock_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&one, sizeof(one)); + set_fs(fs); + if (result < 0) { + printk("dlm: Set keepalive failed: %d\n", result); + } + + result = sock->ops->listen(sock, 5); + if (result < 0) { + printk("dlm: Can't listen on port %d\n", dlm_config.tcp_port); + sock_release(sock); + sock = NULL; + goto create_out; + } + + create_out: + return sock; +} + + +/* Listen on all interfaces */ +static int listen_for_all(void) +{ + struct socket *sock = NULL; + struct connection *con = nodeid2con(0, GFP_KERNEL); + int result = -EINVAL; + + /* We don't support multi-homed hosts */ + memset(con, 0, sizeof(*con)); + init_rwsem(&con->sock_sem); + spin_lock_init(&con->writequeue_lock); + INIT_LIST_HEAD(&con->writequeue); + set_bit(CF_IS_OTHERCON, &con->flags); + + sock = create_listen_sock(con, &dlm_local_addr); + if (sock) { + add_sock(sock, con); + result = 0; + } + else { + result = -EADDRINUSE; + } + + return result; +} + + + +static struct writequeue_entry *new_writequeue_entry(struct connection *con, + gfp_t allocation) +{ + struct writequeue_entry *entry; + + entry = kmalloc(sizeof(struct writequeue_entry), allocation); + if (!entry) + return NULL; + + entry->page = alloc_page(allocation); + if (!entry->page) { + kfree(entry); + return NULL; + } + + entry->offset = 0; + entry->len = 0; + entry->end = 0; + entry->users = 0; + entry->con = con; + + return entry; +} + +void *dlm_lowcomms_get_buffer(int nodeid, int len, + gfp_t allocation, char **ppc) +{ + struct connection *con; + struct writequeue_entry *e; + int offset = 0; + int users = 0; + + if (!atomic_read(&accepting)) + return NULL; + + con = nodeid2con(nodeid, allocation); + if (!con) + return NULL; + + spin_lock(&con->writequeue_lock); + e = list_entry(con->writequeue.prev, struct writequeue_entry, list); + if (((struct list_head *) e == &con->writequeue) || + (PAGE_CACHE_SIZE - e->end < len)) { + e = NULL; + } else { + offset = e->end; + e->end += len; + users = e->users++; + } + spin_unlock(&con->writequeue_lock); + + if (e) { + got_one: + if (users == 0) + kmap(e->page); + *ppc = page_address(e->page) + offset; + return e; + } + + e = new_writequeue_entry(con, allocation); + if (e) { + spin_lock(&con->writequeue_lock); + offset = e->end; + e->end += len; + users = e->users++; + list_add_tail(&e->list, &con->writequeue); + spin_unlock(&con->writequeue_lock); + goto got_one; + } + return NULL; +} + +void dlm_lowcomms_commit_buffer(void *mh) +{ + struct writequeue_entry *e = (struct writequeue_entry *)mh; + struct connection *con = e->con; + int users; + + if (!atomic_read(&accepting)) + return; + + spin_lock(&con->writequeue_lock); + users = --e->users; + if (users) + goto out; + e->len = e->end - e->offset; + kunmap(e->page); + spin_unlock(&con->writequeue_lock); + + if (test_and_set_bit(CF_WRITE_PENDING, &con->flags) == 0) { + spin_lock_bh(&write_sockets_lock); + list_add_tail(&con->write_list, &write_sockets); + spin_unlock_bh(&write_sockets_lock); + + wake_up_interruptible(&lowcomms_send_waitq); + } + return; + + out: + spin_unlock(&con->writequeue_lock); + return; +} + +static void free_entry(struct writequeue_entry *e) +{ + __free_page(e->page); + kfree(e); +} + +/* Send a message */ +static int send_to_sock(struct connection *con) +{ + int ret = 0; + ssize_t(*sendpage) (struct socket *, struct page *, int, size_t, int); + const int msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL; + struct writequeue_entry *e; + int len, offset; + + down_read(&con->sock_sem); + if (con->sock == NULL) + goto out_connect; + + sendpage = con->sock->ops->sendpage; + + spin_lock(&con->writequeue_lock); + for (;;) { + e = list_entry(con->writequeue.next, struct writequeue_entry, + list); + if ((struct list_head *) e == &con->writequeue) + break; + + len = e->len; + offset = e->offset; + BUG_ON(len == 0 && e->users == 0); + spin_unlock(&con->writequeue_lock); + + ret = 0; + if (len) { + ret = sendpage(con->sock, e->page, offset, len, + msg_flags); + if (ret == -EAGAIN || ret == 0) + goto out; + if (ret <= 0) + goto send_error; + } + else { + /* Don't starve people filling buffers */ + schedule(); + } + + spin_lock(&con->writequeue_lock); + e->offset += ret; + e->len -= ret; + + if (e->len == 0 && e->users == 0) { + list_del(&e->list); + free_entry(e); + continue; + } + } + spin_unlock(&con->writequeue_lock); + out: + up_read(&con->sock_sem); + return ret; + + send_error: + up_read(&con->sock_sem); + close_connection(con, FALSE); + lowcomms_connect_sock(con); + return ret; + + out_connect: + up_read(&con->sock_sem); + lowcomms_connect_sock(con); + return 0; +} + +static void clean_one_writequeue(struct connection *con) +{ + struct list_head *list; + struct list_head *temp; + + spin_lock(&con->writequeue_lock); + list_for_each_safe(list, temp, &con->writequeue) { + struct writequeue_entry *e = + list_entry(list, struct writequeue_entry, list); + list_del(&e->list); + free_entry(e); + } + spin_unlock(&con->writequeue_lock); +} + +/* Called from recovery when it knows that a node has + left the cluster */ +int dlm_lowcomms_close(int nodeid) +{ + struct connection *con; + + if (!connections) + goto out; + + log_print("closing connection to node %d", nodeid); + con = nodeid2con(nodeid, 0); + if (con) { + clean_one_writequeue(con); + close_connection(con, TRUE); + atomic_set(&con->waiting_requests, 0); + } + return 0; + + out: + return -1; +} + +/* API send message call, may queue the request */ +/* N.B. This is the old interface - use the new one for new calls */ +int lowcomms_send_message(int nodeid, char *buf, int len, gfp_t allocation) +{ + struct writequeue_entry *e; + char *b; + + e = dlm_lowcomms_get_buffer(nodeid, len, allocation, &b); + if (e) { + memcpy(b, buf, len); + dlm_lowcomms_commit_buffer(e); + return 0; + } + return -ENOBUFS; +} + +/* Look for activity on active sockets */ +static void process_sockets(void) +{ + struct list_head *list; + struct list_head *temp; + int count = 0; + + spin_lock_bh(&read_sockets_lock); + list_for_each_safe(list, temp, &read_sockets) { + + struct connection *con = + list_entry(list, struct connection, read_list); + list_del(&con->read_list); + clear_bit(CF_READ_PENDING, &con->flags); + + spin_unlock_bh(&read_sockets_lock); + + /* This can reach zero if we are processing requests + * as they come in. + */ + if (atomic_read(&con->waiting_requests) == 0) { + spin_lock_bh(&read_sockets_lock); + continue; + } + + do { + con->rx_action(con); + + /* Don't starve out everyone else */ + if (++count >= MAX_RX_MSG_COUNT) { + schedule(); + count = 0; + } + + } while (!atomic_dec_and_test(&con->waiting_requests) && + !kthread_should_stop()); + + spin_lock_bh(&read_sockets_lock); + } + spin_unlock_bh(&read_sockets_lock); +} + +/* Try to send any messages that are pending + */ +static void process_output_queue(void) +{ + struct list_head *list; + struct list_head *temp; + int ret; + + spin_lock_bh(&write_sockets_lock); + list_for_each_safe(list, temp, &write_sockets) { + struct connection *con = + list_entry(list, struct connection, write_list); + clear_bit(CF_WRITE_PENDING, &con->flags); + list_del(&con->write_list); + + spin_unlock_bh(&write_sockets_lock); + + ret = send_to_sock(con); + if (ret < 0) { + } + spin_lock_bh(&write_sockets_lock); + } + spin_unlock_bh(&write_sockets_lock); +} + +static void process_state_queue(void) +{ + struct list_head *list; + struct list_head *temp; + int ret; + + spin_lock_bh(&state_sockets_lock); + list_for_each_safe(list, temp, &state_sockets) { + struct connection *con = + list_entry(list, struct connection, state_list); + list_del(&con->state_list); + clear_bit(CF_CONNECT_PENDING, &con->flags); + spin_unlock_bh(&state_sockets_lock); + + ret = connect_to_sock(con); + if (ret < 0) { + } + spin_lock_bh(&state_sockets_lock); + } + spin_unlock_bh(&state_sockets_lock); +} + + +/* Discard all entries on the write queues */ +static void clean_writequeues(void) +{ + int nodeid; + + for (nodeid = 1; nodeid < conn_array_size; nodeid++) { + struct connection *con = nodeid2con(nodeid, 0); + + if (con) + clean_one_writequeue(con); + } +} + +static int read_list_empty(void) +{ + int status; + + spin_lock_bh(&read_sockets_lock); + status = list_empty(&read_sockets); + spin_unlock_bh(&read_sockets_lock); + + return status; +} + +/* DLM Transport comms receive daemon */ +static int dlm_recvd(void *data) +{ + init_waitqueue_head(&lowcomms_recv_waitq); + init_waitqueue_entry(&lowcomms_recv_waitq_head, current); + add_wait_queue(&lowcomms_recv_waitq, &lowcomms_recv_waitq_head); + + while (!kthread_should_stop()) { + set_current_state(TASK_INTERRUPTIBLE); + if (read_list_empty()) + schedule(); + set_current_state(TASK_RUNNING); + + process_sockets(); + } + + return 0; +} + +static int write_and_state_lists_empty(void) +{ + int status; + + spin_lock_bh(&write_sockets_lock); + status = list_empty(&write_sockets); + spin_unlock_bh(&write_sockets_lock); + + spin_lock_bh(&state_sockets_lock); + if (list_empty(&state_sockets) == 0) + status = 0; + spin_unlock_bh(&state_sockets_lock); + + return status; +} + +/* DLM Transport send daemon */ +static int dlm_sendd(void *data) +{ + init_waitqueue_head(&lowcomms_send_waitq); + init_waitqueue_entry(&lowcomms_send_waitq_head, current); + add_wait_queue(&lowcomms_send_waitq, &lowcomms_send_waitq_head); + + while (!kthread_should_stop()) { + set_current_state(TASK_INTERRUPTIBLE); + if (write_and_state_lists_empty()) + schedule(); + set_current_state(TASK_RUNNING); + + process_state_queue(); + process_output_queue(); + } + + return 0; +} + +static void daemons_stop(void) +{ + kthread_stop(recv_task); + kthread_stop(send_task); +} + +static int daemons_start(void) +{ + struct task_struct *p; + int error; + + p = kthread_run(dlm_recvd, NULL, "dlm_recvd"); + error = IS_ERR(p); + if (error) { + log_print("can't start dlm_recvd %d", error); + return error; + } + recv_task = p; + + p = kthread_run(dlm_sendd, NULL, "dlm_sendd"); + error = IS_ERR(p); + if (error) { + log_print("can't start dlm_sendd %d", error); + kthread_stop(recv_task); + return error; + } + send_task = p; + + return 0; +} + +/* + * Return the largest buffer size we can cope with. + */ +int lowcomms_max_buffer_size(void) +{ + return PAGE_CACHE_SIZE; +} + +void dlm_lowcomms_stop(void) +{ + int i; + + atomic_set(&accepting, 0); + + /* Set all the activity flags to prevent any + socket activity. + */ + for (i = 0; i < conn_array_size; i++) { + if (connections[i]) + connections[i]->flags |= 0x7; + } + daemons_stop(); + clean_writequeues(); + + for (i = 0; i < conn_array_size; i++) { + if (connections[i]) { + close_connection(connections[i], TRUE); + if (connections[i]->othercon) + kmem_cache_free(con_cache, connections[i]->othercon); + kmem_cache_free(con_cache, connections[i]); + } + } + + kfree(connections); + connections = NULL; + + kmem_cache_destroy(con_cache); +} + +/* This is quite likely to sleep... */ +int dlm_lowcomms_start(void) +{ + int error = 0; + + error = -ENOTCONN; + + /* + * Temporarily initialise the waitq head so that lowcomms_send_message + * doesn't crash if it gets called before the thread is fully + * initialised + */ + init_waitqueue_head(&lowcomms_send_waitq); + + error = -ENOMEM; + connections = kmalloc(sizeof(struct connection *) * + NODE_INCREMENT, GFP_KERNEL); + if (!connections) + goto out; + + memset(connections, 0, + sizeof(struct connection *) * NODE_INCREMENT); + + conn_array_size = NODE_INCREMENT; + + if (dlm_our_addr(&dlm_local_addr, 0)) { + log_print("no local IP address has been set"); + goto fail_free_conn; + } + if (!dlm_our_addr(&dlm_local_addr, 1)) { + log_print("This dlm comms module does not support multi-homed clustering"); + goto fail_free_conn; + } + + con_cache = kmem_cache_create("dlm_conn", sizeof(struct connection), + __alignof__(struct connection), 0, NULL, NULL); + if (!con_cache) + goto fail_free_conn; + + + /* Start listening */ + error = listen_for_all(); + if (error) + goto fail_unlisten; + + error = daemons_start(); + if (error) + goto fail_unlisten; + + atomic_set(&accepting, 1); + + return 0; + + fail_unlisten: + close_connection(connections[0], 0); + kmem_cache_free(con_cache, connections[0]); + kmem_cache_destroy(con_cache); + + fail_free_conn: + kfree(connections); + + out: + return error; +} + +int dlm_lowcomms_init(void) +{ + INIT_LIST_HEAD(&read_sockets); + INIT_LIST_HEAD(&write_sockets); + INIT_LIST_HEAD(&state_sockets); + + spin_lock_init(&read_sockets_lock); + spin_lock_init(&write_sockets_lock); + spin_lock_init(&state_sockets_lock); + init_MUTEX(&connections_lock); + + return 0; +} + +void dlm_lowcomms_exit(void) +{ +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c deleted file mode 100644 index 6da6b14..0000000 --- a/fs/dlm/lowcomms.c +++ /dev/null @@ -1,1239 +0,0 @@ -/****************************************************************************** -******************************************************************************* -** -** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. -** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. -** -** This copyrighted material is made available to anyone wishing to use, -** modify, copy, or redistribute it subject to the terms and conditions -** of the GNU General Public License v.2. -** -******************************************************************************* -******************************************************************************/ - -/* - * lowcomms.c - * - * This is the "low-level" comms layer. - * - * It is responsible for sending/receiving messages - * from other nodes in the cluster. - * - * Cluster nodes are referred to by their nodeids. nodeids are - * simply 32 bit numbers to the locking module - if they need to - * be expanded for the cluster infrastructure then that is it's - * responsibility. It is this layer's - * responsibility to resolve these into IP address or - * whatever it needs for inter-node communication. - * - * The comms level is two kernel threads that deal mainly with - * the receiving of messages from other nodes and passing them - * up to the mid-level comms layer (which understands the - * message format) for execution by the locking core, and - * a send thread which does all the setting up of connections - * to remote nodes and the sending of data. Threads are not allowed - * to send their own data because it may cause them to wait in times - * of high load. Also, this way, the sending thread can collect together - * messages bound for one node and send them in one block. - * - * I don't see any problem with the recv thread executing the locking - * code on behalf of remote processes as the locking code is - * short, efficient and never (well, hardly ever) waits. - * - */ - -#include -#include -#include -#include -#include -#include -#include - -#include "dlm_internal.h" -#include "lowcomms.h" -#include "config.h" -#include "midcomms.h" - -static struct sockaddr_storage *dlm_local_addr[DLM_MAX_ADDR_COUNT]; -static int dlm_local_count; -static int dlm_local_nodeid; - -/* One of these per connected node */ - -#define NI_INIT_PENDING 1 -#define NI_WRITE_PENDING 2 - -struct nodeinfo { - spinlock_t lock; - sctp_assoc_t assoc_id; - unsigned long flags; - struct list_head write_list; /* nodes with pending writes */ - struct list_head writequeue; /* outgoing writequeue_entries */ - spinlock_t writequeue_lock; - int nodeid; -}; - -static DEFINE_IDR(nodeinfo_idr); -static struct rw_semaphore nodeinfo_lock; -static int max_nodeid; - -struct cbuf { - unsigned base; - unsigned len; - unsigned mask; -}; - -/* Just the one of these, now. But this struct keeps - the connection-specific variables together */ - -#define CF_READ_PENDING 1 - -struct connection { - struct socket *sock; - unsigned long flags; - struct page *rx_page; - atomic_t waiting_requests; - struct cbuf cb; - int eagain_flag; -}; - -/* An entry waiting to be sent */ - -struct writequeue_entry { - struct list_head list; - struct page *page; - int offset; - int len; - int end; - int users; - struct nodeinfo *ni; -}; - -#define CBUF_ADD(cb, n) do { (cb)->len += n; } while(0) -#define CBUF_EMPTY(cb) ((cb)->len == 0) -#define CBUF_MAY_ADD(cb, n) (((cb)->len + (n)) < ((cb)->mask + 1)) -#define CBUF_DATA(cb) (((cb)->base + (cb)->len) & (cb)->mask) - -#define CBUF_INIT(cb, size) \ -do { \ - (cb)->base = (cb)->len = 0; \ - (cb)->mask = ((size)-1); \ -} while(0) - -#define CBUF_EAT(cb, n) \ -do { \ - (cb)->len -= (n); \ - (cb)->base += (n); \ - (cb)->base &= (cb)->mask; \ -} while(0) - - -/* List of nodes which have writes pending */ -static struct list_head write_nodes; -static spinlock_t write_nodes_lock; - -/* Maximum number of incoming messages to process before - * doing a schedule() - */ -#define MAX_RX_MSG_COUNT 25 - -/* Manage daemons */ -static struct task_struct *recv_task; -static struct task_struct *send_task; -static wait_queue_head_t lowcomms_recv_wait; -static atomic_t accepting; - -/* The SCTP connection */ -static struct connection sctp_con; - - -static int nodeid_to_addr(int nodeid, struct sockaddr *retaddr) -{ - struct sockaddr_storage addr; - int error; - - if (!dlm_local_count) - return -1; - - error = dlm_nodeid_to_addr(nodeid, &addr); - if (error) - return error; - - if (dlm_local_addr[0]->ss_family == AF_INET) { - struct sockaddr_in *in4 = (struct sockaddr_in *) &addr; - struct sockaddr_in *ret4 = (struct sockaddr_in *) retaddr; - ret4->sin_addr.s_addr = in4->sin_addr.s_addr; - } else { - struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &addr; - struct sockaddr_in6 *ret6 = (struct sockaddr_in6 *) retaddr; - memcpy(&ret6->sin6_addr, &in6->sin6_addr, - sizeof(in6->sin6_addr)); - } - - return 0; -} - -static struct nodeinfo *nodeid2nodeinfo(int nodeid, gfp_t alloc) -{ - struct nodeinfo *ni; - int r; - int n; - - down_read(&nodeinfo_lock); - ni = idr_find(&nodeinfo_idr, nodeid); - up_read(&nodeinfo_lock); - - if (!ni && alloc) { - down_write(&nodeinfo_lock); - - ni = idr_find(&nodeinfo_idr, nodeid); - if (ni) - goto out_up; - - r = idr_pre_get(&nodeinfo_idr, alloc); - if (!r) - goto out_up; - - ni = kmalloc(sizeof(struct nodeinfo), alloc); - if (!ni) - goto out_up; - - r = idr_get_new_above(&nodeinfo_idr, ni, nodeid, &n); - if (r) { - kfree(ni); - ni = NULL; - goto out_up; - } - if (n != nodeid) { - idr_remove(&nodeinfo_idr, n); - kfree(ni); - ni = NULL; - goto out_up; - } - memset(ni, 0, sizeof(struct nodeinfo)); - spin_lock_init(&ni->lock); - INIT_LIST_HEAD(&ni->writequeue); - spin_lock_init(&ni->writequeue_lock); - ni->nodeid = nodeid; - - if (nodeid > max_nodeid) - max_nodeid = nodeid; - out_up: - up_write(&nodeinfo_lock); - } - - return ni; -} - -/* Don't call this too often... */ -static struct nodeinfo *assoc2nodeinfo(sctp_assoc_t assoc) -{ - int i; - struct nodeinfo *ni; - - for (i=1; i<=max_nodeid; i++) { - ni = nodeid2nodeinfo(i, 0); - if (ni && ni->assoc_id == assoc) - return ni; - } - return NULL; -} - -/* Data or notification available on socket */ -static void lowcomms_data_ready(struct sock *sk, int count_unused) -{ - atomic_inc(&sctp_con.waiting_requests); - if (test_and_set_bit(CF_READ_PENDING, &sctp_con.flags)) - return; - - wake_up_interruptible(&lowcomms_recv_wait); -} - - -/* Add the port number to an IP6 or 4 sockaddr and return the address length. - Also padd out the struct with zeros to make comparisons meaningful */ - -static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, - int *addr_len) -{ - struct sockaddr_in *local4_addr; - struct sockaddr_in6 *local6_addr; - - if (!dlm_local_count) - return; - - if (!port) { - if (dlm_local_addr[0]->ss_family == AF_INET) { - local4_addr = (struct sockaddr_in *)dlm_local_addr[0]; - port = be16_to_cpu(local4_addr->sin_port); - } else { - local6_addr = (struct sockaddr_in6 *)dlm_local_addr[0]; - port = be16_to_cpu(local6_addr->sin6_port); - } - } - - saddr->ss_family = dlm_local_addr[0]->ss_family; - if (dlm_local_addr[0]->ss_family == AF_INET) { - struct sockaddr_in *in4_addr = (struct sockaddr_in *)saddr; - in4_addr->sin_port = cpu_to_be16(port); - memset(&in4_addr->sin_zero, 0, sizeof(in4_addr->sin_zero)); - memset(in4_addr+1, 0, sizeof(struct sockaddr_storage) - - sizeof(struct sockaddr_in)); - *addr_len = sizeof(struct sockaddr_in); - } else { - struct sockaddr_in6 *in6_addr = (struct sockaddr_in6 *)saddr; - in6_addr->sin6_port = cpu_to_be16(port); - memset(in6_addr+1, 0, sizeof(struct sockaddr_storage) - - sizeof(struct sockaddr_in6)); - *addr_len = sizeof(struct sockaddr_in6); - } -} - -/* Close the connection and tidy up */ -static void close_connection(void) -{ - if (sctp_con.sock) { - sock_release(sctp_con.sock); - sctp_con.sock = NULL; - } - - if (sctp_con.rx_page) { - __free_page(sctp_con.rx_page); - sctp_con.rx_page = NULL; - } -} - -/* We only send shutdown messages to nodes that are not part of the cluster */ -static void send_shutdown(sctp_assoc_t associd) -{ - static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; - struct msghdr outmessage; - struct cmsghdr *cmsg; - struct sctp_sndrcvinfo *sinfo; - int ret; - - outmessage.msg_name = NULL; - outmessage.msg_namelen = 0; - outmessage.msg_control = outcmsg; - outmessage.msg_controllen = sizeof(outcmsg); - outmessage.msg_flags = MSG_EOR; - - cmsg = CMSG_FIRSTHDR(&outmessage); - cmsg->cmsg_level = IPPROTO_SCTP; - cmsg->cmsg_type = SCTP_SNDRCV; - cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); - outmessage.msg_controllen = cmsg->cmsg_len; - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); - memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); - - sinfo->sinfo_flags |= MSG_EOF; - sinfo->sinfo_assoc_id = associd; - - ret = kernel_sendmsg(sctp_con.sock, &outmessage, NULL, 0, 0); - - if (ret != 0) - log_print("send EOF to node failed: %d", ret); -} - - -/* INIT failed but we don't know which node... - restart INIT on all pending nodes */ -static void init_failed(void) -{ - int i; - struct nodeinfo *ni; - - for (i=1; i<=max_nodeid; i++) { - ni = nodeid2nodeinfo(i, 0); - if (!ni) - continue; - - if (test_and_clear_bit(NI_INIT_PENDING, &ni->flags)) { - ni->assoc_id = 0; - if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { - spin_lock_bh(&write_nodes_lock); - list_add_tail(&ni->write_list, &write_nodes); - spin_unlock_bh(&write_nodes_lock); - } - } - } - wake_up_process(send_task); -} - -/* Something happened to an association */ -static void process_sctp_notification(struct msghdr *msg, char *buf) -{ - union sctp_notification *sn = (union sctp_notification *)buf; - - if (sn->sn_header.sn_type == SCTP_ASSOC_CHANGE) { - switch (sn->sn_assoc_change.sac_state) { - - case SCTP_COMM_UP: - case SCTP_RESTART: - { - /* Check that the new node is in the lockspace */ - struct sctp_prim prim; - mm_segment_t fs; - int nodeid; - int prim_len, ret; - int addr_len; - struct nodeinfo *ni; - - /* This seems to happen when we received a connection - * too early... or something... anyway, it happens but - * we always seem to get a real message too, see - * receive_from_sock */ - - if ((int)sn->sn_assoc_change.sac_assoc_id <= 0) { - log_print("COMM_UP for invalid assoc ID %d", - (int)sn->sn_assoc_change.sac_assoc_id); - init_failed(); - return; - } - memset(&prim, 0, sizeof(struct sctp_prim)); - prim_len = sizeof(struct sctp_prim); - prim.ssp_assoc_id = sn->sn_assoc_change.sac_assoc_id; - - fs = get_fs(); - set_fs(get_ds()); - ret = sctp_con.sock->ops->getsockopt(sctp_con.sock, - IPPROTO_SCTP, SCTP_PRIMARY_ADDR, - (char*)&prim, &prim_len); - set_fs(fs); - if (ret < 0) { - struct nodeinfo *ni; - - log_print("getsockopt/sctp_primary_addr on " - "new assoc %d failed : %d", - (int)sn->sn_assoc_change.sac_assoc_id, ret); - - /* Retry INIT later */ - ni = assoc2nodeinfo(sn->sn_assoc_change.sac_assoc_id); - if (ni) - clear_bit(NI_INIT_PENDING, &ni->flags); - return; - } - make_sockaddr(&prim.ssp_addr, 0, &addr_len); - if (dlm_addr_to_nodeid(&prim.ssp_addr, &nodeid)) { - log_print("reject connect from unknown addr"); - send_shutdown(prim.ssp_assoc_id); - return; - } - - ni = nodeid2nodeinfo(nodeid, GFP_KERNEL); - if (!ni) - return; - - /* Save the assoc ID */ - spin_lock(&ni->lock); - ni->assoc_id = sn->sn_assoc_change.sac_assoc_id; - spin_unlock(&ni->lock); - - log_print("got new/restarted association %d nodeid %d", - (int)sn->sn_assoc_change.sac_assoc_id, nodeid); - - /* Send any pending writes */ - clear_bit(NI_INIT_PENDING, &ni->flags); - if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { - spin_lock_bh(&write_nodes_lock); - list_add_tail(&ni->write_list, &write_nodes); - spin_unlock_bh(&write_nodes_lock); - } - wake_up_process(send_task); - } - break; - - case SCTP_COMM_LOST: - case SCTP_SHUTDOWN_COMP: - { - struct nodeinfo *ni; - - ni = assoc2nodeinfo(sn->sn_assoc_change.sac_assoc_id); - if (ni) { - spin_lock(&ni->lock); - ni->assoc_id = 0; - spin_unlock(&ni->lock); - } - } - break; - - /* We don't know which INIT failed, so clear the PENDING flags - * on them all. if assoc_id is zero then it will then try - * again */ - - case SCTP_CANT_STR_ASSOC: - { - log_print("Can't start SCTP association - retrying"); - init_failed(); - } - break; - - default: - log_print("unexpected SCTP assoc change id=%d state=%d", - (int)sn->sn_assoc_change.sac_assoc_id, - sn->sn_assoc_change.sac_state); - } - } -} - -/* Data received from remote end */ -static int receive_from_sock(void) -{ - int ret = 0; - struct msghdr msg; - struct kvec iov[2]; - unsigned len; - int r; - struct sctp_sndrcvinfo *sinfo; - struct cmsghdr *cmsg; - struct nodeinfo *ni; - - /* These two are marginally too big for stack allocation, but this - * function is (currently) only called by dlm_recvd so static should be - * OK. - */ - static struct sockaddr_storage msgname; - static char incmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; - - if (sctp_con.sock == NULL) - goto out; - - if (sctp_con.rx_page == NULL) { - /* - * This doesn't need to be atomic, but I think it should - * improve performance if it is. - */ - sctp_con.rx_page = alloc_page(GFP_ATOMIC); - if (sctp_con.rx_page == NULL) - goto out_resched; - CBUF_INIT(&sctp_con.cb, PAGE_CACHE_SIZE); - } - - memset(&incmsg, 0, sizeof(incmsg)); - memset(&msgname, 0, sizeof(msgname)); - - memset(incmsg, 0, sizeof(incmsg)); - msg.msg_name = &msgname; - msg.msg_namelen = sizeof(msgname); - msg.msg_flags = 0; - msg.msg_control = incmsg; - msg.msg_controllen = sizeof(incmsg); - msg.msg_iovlen = 1; - - /* I don't see why this circular buffer stuff is necessary for SCTP - * which is a packet-based protocol, but the whole thing breaks under - * load without it! The overhead is minimal (and is in the TCP lowcomms - * anyway, of course) so I'll leave it in until I can figure out what's - * really happening. - */ - - /* - * iov[0] is the bit of the circular buffer between the current end - * point (cb.base + cb.len) and the end of the buffer. - */ - iov[0].iov_len = sctp_con.cb.base - CBUF_DATA(&sctp_con.cb); - iov[0].iov_base = page_address(sctp_con.rx_page) + - CBUF_DATA(&sctp_con.cb); - iov[1].iov_len = 0; - - /* - * iov[1] is the bit of the circular buffer between the start of the - * buffer and the start of the currently used section (cb.base) - */ - if (CBUF_DATA(&sctp_con.cb) >= sctp_con.cb.base) { - iov[0].iov_len = PAGE_CACHE_SIZE - CBUF_DATA(&sctp_con.cb); - iov[1].iov_len = sctp_con.cb.base; - iov[1].iov_base = page_address(sctp_con.rx_page); - msg.msg_iovlen = 2; - } - len = iov[0].iov_len + iov[1].iov_len; - - r = ret = kernel_recvmsg(sctp_con.sock, &msg, iov, msg.msg_iovlen, len, - MSG_NOSIGNAL | MSG_DONTWAIT); - if (ret <= 0) - goto out_close; - - msg.msg_control = incmsg; - msg.msg_controllen = sizeof(incmsg); - cmsg = CMSG_FIRSTHDR(&msg); - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); - - if (msg.msg_flags & MSG_NOTIFICATION) { - process_sctp_notification(&msg, page_address(sctp_con.rx_page)); - return 0; - } - - /* Is this a new association ? */ - ni = nodeid2nodeinfo(le32_to_cpu(sinfo->sinfo_ppid), GFP_KERNEL); - if (ni) { - ni->assoc_id = sinfo->sinfo_assoc_id; - if (test_and_clear_bit(NI_INIT_PENDING, &ni->flags)) { - - if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { - spin_lock_bh(&write_nodes_lock); - list_add_tail(&ni->write_list, &write_nodes); - spin_unlock_bh(&write_nodes_lock); - } - wake_up_process(send_task); - } - } - - /* INIT sends a message with length of 1 - ignore it */ - if (r == 1) - return 0; - - CBUF_ADD(&sctp_con.cb, ret); - ret = dlm_process_incoming_buffer(cpu_to_le32(sinfo->sinfo_ppid), - page_address(sctp_con.rx_page), - sctp_con.cb.base, sctp_con.cb.len, - PAGE_CACHE_SIZE); - if (ret < 0) - goto out_close; - CBUF_EAT(&sctp_con.cb, ret); - - out: - ret = 0; - goto out_ret; - - out_resched: - lowcomms_data_ready(sctp_con.sock->sk, 0); - ret = 0; - schedule(); - goto out_ret; - - out_close: - if (ret != -EAGAIN) - log_print("error reading from sctp socket: %d", ret); - out_ret: - return ret; -} - -/* Bind to an IP address. SCTP allows multiple address so it can do multi-homing */ -static int add_bind_addr(struct sockaddr_storage *addr, int addr_len, int num) -{ - mm_segment_t fs; - int result = 0; - - fs = get_fs(); - set_fs(get_ds()); - if (num == 1) - result = sctp_con.sock->ops->bind(sctp_con.sock, - (struct sockaddr *) addr, addr_len); - else - result = sctp_con.sock->ops->setsockopt(sctp_con.sock, SOL_SCTP, - SCTP_SOCKOPT_BINDX_ADD, (char *)addr, addr_len); - set_fs(fs); - - if (result < 0) - log_print("Can't bind to port %d addr number %d", - dlm_config.tcp_port, num); - - return result; -} - -static void init_local(void) -{ - struct sockaddr_storage sas, *addr; - int i; - - dlm_local_nodeid = dlm_our_nodeid(); - - for (i = 0; i < DLM_MAX_ADDR_COUNT - 1; i++) { - if (dlm_our_addr(&sas, i)) - break; - - addr = kmalloc(sizeof(*addr), GFP_KERNEL); - if (!addr) - break; - memcpy(addr, &sas, sizeof(*addr)); - dlm_local_addr[dlm_local_count++] = addr; - } -} - -/* Initialise SCTP socket and bind to all interfaces */ -static int init_sock(void) -{ - mm_segment_t fs; - struct socket *sock = NULL; - struct sockaddr_storage localaddr; - struct sctp_event_subscribe subscribe; - int result = -EINVAL, num = 1, i, addr_len; - - if (!dlm_local_count) { - init_local(); - if (!dlm_local_count) { - log_print("no local IP address has been set"); - goto out; - } - } - - result = sock_create_kern(dlm_local_addr[0]->ss_family, SOCK_SEQPACKET, - IPPROTO_SCTP, &sock); - if (result < 0) { - log_print("Can't create comms socket, check SCTP is loaded"); - goto out; - } - - /* Listen for events */ - memset(&subscribe, 0, sizeof(subscribe)); - subscribe.sctp_data_io_event = 1; - subscribe.sctp_association_event = 1; - subscribe.sctp_send_failure_event = 1; - subscribe.sctp_shutdown_event = 1; - subscribe.sctp_partial_delivery_event = 1; - - fs = get_fs(); - set_fs(get_ds()); - result = sock->ops->setsockopt(sock, SOL_SCTP, SCTP_EVENTS, - (char *)&subscribe, sizeof(subscribe)); - set_fs(fs); - - if (result < 0) { - log_print("Failed to set SCTP_EVENTS on socket: result=%d", - result); - goto create_delsock; - } - - /* Init con struct */ - sock->sk->sk_user_data = &sctp_con; - sctp_con.sock = sock; - sctp_con.sock->sk->sk_data_ready = lowcomms_data_ready; - - /* Bind to all interfaces. */ - for (i = 0; i < dlm_local_count; i++) { - memcpy(&localaddr, dlm_local_addr[i], sizeof(localaddr)); - make_sockaddr(&localaddr, dlm_config.tcp_port, &addr_len); - - result = add_bind_addr(&localaddr, addr_len, num); - if (result) - goto create_delsock; - ++num; - } - - result = sock->ops->listen(sock, 5); - if (result < 0) { - log_print("Can't set socket listening"); - goto create_delsock; - } - - return 0; - - create_delsock: - sock_release(sock); - sctp_con.sock = NULL; - out: - return result; -} - - -static struct writequeue_entry *new_writequeue_entry(gfp_t allocation) -{ - struct writequeue_entry *entry; - - entry = kmalloc(sizeof(struct writequeue_entry), allocation); - if (!entry) - return NULL; - - entry->page = alloc_page(allocation); - if (!entry->page) { - kfree(entry); - return NULL; - } - - entry->offset = 0; - entry->len = 0; - entry->end = 0; - entry->users = 0; - - return entry; -} - -void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc) -{ - struct writequeue_entry *e; - int offset = 0; - int users = 0; - struct nodeinfo *ni; - - if (!atomic_read(&accepting)) - return NULL; - - ni = nodeid2nodeinfo(nodeid, allocation); - if (!ni) - return NULL; - - spin_lock(&ni->writequeue_lock); - e = list_entry(ni->writequeue.prev, struct writequeue_entry, list); - if (((struct list_head *) e == &ni->writequeue) || - (PAGE_CACHE_SIZE - e->end < len)) { - e = NULL; - } else { - offset = e->end; - e->end += len; - users = e->users++; - } - spin_unlock(&ni->writequeue_lock); - - if (e) { - got_one: - if (users == 0) - kmap(e->page); - *ppc = page_address(e->page) + offset; - return e; - } - - e = new_writequeue_entry(allocation); - if (e) { - spin_lock(&ni->writequeue_lock); - offset = e->end; - e->end += len; - e->ni = ni; - users = e->users++; - list_add_tail(&e->list, &ni->writequeue); - spin_unlock(&ni->writequeue_lock); - goto got_one; - } - return NULL; -} - -void dlm_lowcomms_commit_buffer(void *arg) -{ - struct writequeue_entry *e = (struct writequeue_entry *) arg; - int users; - struct nodeinfo *ni = e->ni; - - if (!atomic_read(&accepting)) - return; - - spin_lock(&ni->writequeue_lock); - users = --e->users; - if (users) - goto out; - e->len = e->end - e->offset; - kunmap(e->page); - spin_unlock(&ni->writequeue_lock); - - if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { - spin_lock_bh(&write_nodes_lock); - list_add_tail(&ni->write_list, &write_nodes); - spin_unlock_bh(&write_nodes_lock); - wake_up_process(send_task); - } - return; - - out: - spin_unlock(&ni->writequeue_lock); - return; -} - -static void free_entry(struct writequeue_entry *e) -{ - __free_page(e->page); - kfree(e); -} - -/* Initiate an SCTP association. In theory we could just use sendmsg() on - the first IP address and it should work, but this allows us to set up the - association before sending any valuable data that we can't afford to lose. - It also keeps the send path clean as it can now always use the association ID */ -static void initiate_association(int nodeid) -{ - struct sockaddr_storage rem_addr; - static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; - struct msghdr outmessage; - struct cmsghdr *cmsg; - struct sctp_sndrcvinfo *sinfo; - int ret; - int addrlen; - char buf[1]; - struct kvec iov[1]; - struct nodeinfo *ni; - - log_print("Initiating association with node %d", nodeid); - - ni = nodeid2nodeinfo(nodeid, GFP_KERNEL); - if (!ni) - return; - - if (nodeid_to_addr(nodeid, (struct sockaddr *)&rem_addr)) { - log_print("no address for nodeid %d", nodeid); - return; - } - - make_sockaddr(&rem_addr, dlm_config.tcp_port, &addrlen); - - outmessage.msg_name = &rem_addr; - outmessage.msg_namelen = addrlen; - outmessage.msg_control = outcmsg; - outmessage.msg_controllen = sizeof(outcmsg); - outmessage.msg_flags = MSG_EOR; - - iov[0].iov_base = buf; - iov[0].iov_len = 1; - - /* Real INIT messages seem to cause trouble. Just send a 1 byte message - we can afford to lose */ - cmsg = CMSG_FIRSTHDR(&outmessage); - cmsg->cmsg_level = IPPROTO_SCTP; - cmsg->cmsg_type = SCTP_SNDRCV; - cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); - memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); - sinfo->sinfo_ppid = cpu_to_le32(dlm_local_nodeid); - - outmessage.msg_controllen = cmsg->cmsg_len; - ret = kernel_sendmsg(sctp_con.sock, &outmessage, iov, 1, 1); - if (ret < 0) { - log_print("send INIT to node failed: %d", ret); - /* Try again later */ - clear_bit(NI_INIT_PENDING, &ni->flags); - } -} - -/* Send a message */ -static int send_to_sock(struct nodeinfo *ni) -{ - int ret = 0; - struct writequeue_entry *e; - int len, offset; - struct msghdr outmsg; - static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; - struct cmsghdr *cmsg; - struct sctp_sndrcvinfo *sinfo; - struct kvec iov; - - /* See if we need to init an association before we start - sending precious messages */ - spin_lock(&ni->lock); - if (!ni->assoc_id && !test_and_set_bit(NI_INIT_PENDING, &ni->flags)) { - spin_unlock(&ni->lock); - initiate_association(ni->nodeid); - return 0; - } - spin_unlock(&ni->lock); - - outmsg.msg_name = NULL; /* We use assoc_id */ - outmsg.msg_namelen = 0; - outmsg.msg_control = outcmsg; - outmsg.msg_controllen = sizeof(outcmsg); - outmsg.msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL | MSG_EOR; - - cmsg = CMSG_FIRSTHDR(&outmsg); - cmsg->cmsg_level = IPPROTO_SCTP; - cmsg->cmsg_type = SCTP_SNDRCV; - cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); - memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); - sinfo->sinfo_ppid = cpu_to_le32(dlm_local_nodeid); - sinfo->sinfo_assoc_id = ni->assoc_id; - outmsg.msg_controllen = cmsg->cmsg_len; - - spin_lock(&ni->writequeue_lock); - for (;;) { - if (list_empty(&ni->writequeue)) - break; - e = list_entry(ni->writequeue.next, struct writequeue_entry, - list); - len = e->len; - offset = e->offset; - BUG_ON(len == 0 && e->users == 0); - spin_unlock(&ni->writequeue_lock); - kmap(e->page); - - ret = 0; - if (len) { - iov.iov_base = page_address(e->page)+offset; - iov.iov_len = len; - - ret = kernel_sendmsg(sctp_con.sock, &outmsg, &iov, 1, - len); - if (ret == -EAGAIN) { - sctp_con.eagain_flag = 1; - goto out; - } else if (ret < 0) - goto send_error; - } else { - /* Don't starve people filling buffers */ - schedule(); - } - - spin_lock(&ni->writequeue_lock); - e->offset += ret; - e->len -= ret; - - if (e->len == 0 && e->users == 0) { - list_del(&e->list); - free_entry(e); - continue; - } - } - spin_unlock(&ni->writequeue_lock); - out: - return ret; - - send_error: - log_print("Error sending to node %d %d", ni->nodeid, ret); - spin_lock(&ni->lock); - if (!test_and_set_bit(NI_INIT_PENDING, &ni->flags)) { - ni->assoc_id = 0; - spin_unlock(&ni->lock); - initiate_association(ni->nodeid); - } else - spin_unlock(&ni->lock); - - return ret; -} - -/* Try to send any messages that are pending */ -static void process_output_queue(void) -{ - struct list_head *list; - struct list_head *temp; - - spin_lock_bh(&write_nodes_lock); - list_for_each_safe(list, temp, &write_nodes) { - struct nodeinfo *ni = - list_entry(list, struct nodeinfo, write_list); - clear_bit(NI_WRITE_PENDING, &ni->flags); - list_del(&ni->write_list); - - spin_unlock_bh(&write_nodes_lock); - - send_to_sock(ni); - spin_lock_bh(&write_nodes_lock); - } - spin_unlock_bh(&write_nodes_lock); -} - -/* Called after we've had -EAGAIN and been woken up */ -static void refill_write_queue(void) -{ - int i; - - for (i=1; i<=max_nodeid; i++) { - struct nodeinfo *ni = nodeid2nodeinfo(i, 0); - - if (ni) { - if (!test_and_set_bit(NI_WRITE_PENDING, &ni->flags)) { - spin_lock_bh(&write_nodes_lock); - list_add_tail(&ni->write_list, &write_nodes); - spin_unlock_bh(&write_nodes_lock); - } - } - } -} - -static void clean_one_writequeue(struct nodeinfo *ni) -{ - struct list_head *list; - struct list_head *temp; - - spin_lock(&ni->writequeue_lock); - list_for_each_safe(list, temp, &ni->writequeue) { - struct writequeue_entry *e = - list_entry(list, struct writequeue_entry, list); - list_del(&e->list); - free_entry(e); - } - spin_unlock(&ni->writequeue_lock); -} - -static void clean_writequeues(void) -{ - int i; - - for (i=1; i<=max_nodeid; i++) { - struct nodeinfo *ni = nodeid2nodeinfo(i, 0); - if (ni) - clean_one_writequeue(ni); - } -} - - -static void dealloc_nodeinfo(void) -{ - int i; - - for (i=1; i<=max_nodeid; i++) { - struct nodeinfo *ni = nodeid2nodeinfo(i, 0); - if (ni) { - idr_remove(&nodeinfo_idr, i); - kfree(ni); - } - } -} - -int dlm_lowcomms_close(int nodeid) -{ - struct nodeinfo *ni; - - ni = nodeid2nodeinfo(nodeid, 0); - if (!ni) - return -1; - - spin_lock(&ni->lock); - if (ni->assoc_id) { - ni->assoc_id = 0; - /* Don't send shutdown here, sctp will just queue it - till the node comes back up! */ - } - spin_unlock(&ni->lock); - - clean_one_writequeue(ni); - clear_bit(NI_INIT_PENDING, &ni->flags); - return 0; -} - -static int write_list_empty(void) -{ - int status; - - spin_lock_bh(&write_nodes_lock); - status = list_empty(&write_nodes); - spin_unlock_bh(&write_nodes_lock); - - return status; -} - -static int dlm_recvd(void *data) -{ - DECLARE_WAITQUEUE(wait, current); - - while (!kthread_should_stop()) { - int count = 0; - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&lowcomms_recv_wait, &wait); - if (!test_bit(CF_READ_PENDING, &sctp_con.flags)) - schedule(); - remove_wait_queue(&lowcomms_recv_wait, &wait); - set_current_state(TASK_RUNNING); - - if (test_and_clear_bit(CF_READ_PENDING, &sctp_con.flags)) { - int ret; - - do { - ret = receive_from_sock(); - - /* Don't starve out everyone else */ - if (++count >= MAX_RX_MSG_COUNT) { - schedule(); - count = 0; - } - } while (!kthread_should_stop() && ret >=0); - } - schedule(); - } - - return 0; -} - -static int dlm_sendd(void *data) -{ - DECLARE_WAITQUEUE(wait, current); - - add_wait_queue(sctp_con.sock->sk->sk_sleep, &wait); - - while (!kthread_should_stop()) { - set_current_state(TASK_INTERRUPTIBLE); - if (write_list_empty()) - schedule(); - set_current_state(TASK_RUNNING); - - if (sctp_con.eagain_flag) { - sctp_con.eagain_flag = 0; - refill_write_queue(); - } - process_output_queue(); - } - - remove_wait_queue(sctp_con.sock->sk->sk_sleep, &wait); - - return 0; -} - -static void daemons_stop(void) -{ - kthread_stop(recv_task); - kthread_stop(send_task); -} - -static int daemons_start(void) -{ - struct task_struct *p; - int error; - - p = kthread_run(dlm_recvd, NULL, "dlm_recvd"); - error = IS_ERR(p); - if (error) { - log_print("can't start dlm_recvd %d", error); - return error; - } - recv_task = p; - - p = kthread_run(dlm_sendd, NULL, "dlm_sendd"); - error = IS_ERR(p); - if (error) { - log_print("can't start dlm_sendd %d", error); - kthread_stop(recv_task); - return error; - } - send_task = p; - - return 0; -} - -/* - * This is quite likely to sleep... - */ -int dlm_lowcomms_start(void) -{ - int error; - - error = init_sock(); - if (error) - goto fail_sock; - error = daemons_start(); - if (error) - goto fail_sock; - atomic_set(&accepting, 1); - return 0; - - fail_sock: - close_connection(); - return error; -} - -/* Set all the activity flags to prevent any socket activity. */ - -void dlm_lowcomms_stop(void) -{ - atomic_set(&accepting, 0); - sctp_con.flags = 0x7; - daemons_stop(); - clean_writequeues(); - close_connection(); - dealloc_nodeinfo(); - max_nodeid = 0; -} - -int dlm_lowcomms_init(void) -{ - init_waitqueue_head(&lowcomms_recv_wait); - spin_lock_init(&write_nodes_lock); - INIT_LIST_HEAD(&write_nodes); - init_rwsem(&nodeinfo_lock); - return 0; -} - -void dlm_lowcomms_exit(void) -{ - int i; - - for (i = 0; i < dlm_local_count; i++) - kfree(dlm_local_addr[i]); - dlm_local_count = 0; - dlm_local_nodeid = 0; -} - -- cgit v0.10.2 From 520698096436f7da5b9142e63e3bed5580c5f14e Mon Sep 17 00:00:00 2001 From: David Teigland Date: Thu, 2 Nov 2006 09:49:02 -0600 Subject: [DLM] res_recover_locks_count not reset when recover_locks is aborted Red Hat BZ 213684 If a node sends an lkb to the new master (RCOM_LOCK message) during recovery and recovery is then aborted on both nodes before it gets a reply, the res_recover_locks_count needs to be reset to 0 so that when the subsequent recovery comes along and sends the lkb to the new master again the assertion doesn't trigger that checks that counter is zero. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c index a5e6d18..cf9f683 100644 --- a/fs/dlm/recover.c +++ b/fs/dlm/recover.c @@ -252,6 +252,7 @@ static void recover_list_clear(struct dlm_ls *ls) spin_lock(&ls->ls_recover_list_lock); list_for_each_entry_safe(r, s, &ls->ls_recover_list, res_recover_list) { list_del_init(&r->res_recover_list); + r->res_recover_locks_count = 0; dlm_put_rsb(r); ls->ls_recover_list_count--; } -- cgit v0.10.2 From 435618b75b82b5ee511cc01fcdda9c44adb2f4bd Mon Sep 17 00:00:00 2001 From: David Teigland Date: Thu, 2 Nov 2006 09:45:56 -0600 Subject: [DLM] status messages ping-pong between unmounted nodes Red Hat BZ 213682 If two nodes leave the lockspace (while unmounting the fs in the case of gfs) after one has sent a STATUS message to the other, STATUS/STATUS_REPLY messages will then ping-pong between the nodes when neither of them can find the lockspace in question any longer. We kill this by not sending another STATUS message when we get a STATUS_REPLY for an unknown lockspace. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c index 518239a..87b12f7 100644 --- a/fs/dlm/rcom.c +++ b/fs/dlm/rcom.c @@ -412,9 +412,10 @@ void dlm_receive_rcom(struct dlm_header *hd, int nodeid) ls = dlm_find_lockspace_global(hd->h_lockspace); if (!ls) { - log_print("lockspace %x from %d not found", - hd->h_lockspace, nodeid); - send_ls_not_ready(nodeid, rc); + log_print("lockspace %x from %d type %x not found", + hd->h_lockspace, nodeid, rc->rc_type); + if (rc->rc_type == DLM_RCOM_STATUS) + send_ls_not_ready(nodeid, rc); return; } -- cgit v0.10.2 From d4400156d415540086c34a06e5d233122d6bf56a Mon Sep 17 00:00:00 2001 From: David Teigland Date: Tue, 31 Oct 2006 11:55:56 -0600 Subject: [DLM] fix requestqueue race Red Hat BZ 211914 There's a race between dlm_recoverd (1) enabling locking and (2) clearing out the requestqueue, and dlm_recvd (1) checking if locking is enabled and (2) adding a message to the requestqueue. An order of recoverd(1), recvd(1), recvd(2), recoverd(2) will result in a message being left on the requestqueue. The fix is to have dlm_recvd check if dlm_recoverd has enabled locking after taking the mutex for the requestqueue and if it has processing the message instead of queueing it. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 3f2befa..6088a16 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -3028,10 +3028,17 @@ int dlm_receive_message(struct dlm_header *hd, int nodeid, int recovery) while (1) { if (dlm_locking_stopped(ls)) { - if (!recovery) - dlm_add_requestqueue(ls, nodeid, hd); - error = -EINTR; - goto out; + if (recovery) { + error = -EINTR; + goto out; + } + error = dlm_add_requestqueue(ls, nodeid, hd); + if (error == -EAGAIN) + continue; + else { + error = -EINTR; + goto out; + } } if (lock_recovery_try(ls)) diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c index 7b2b089..0226d2a 100644 --- a/fs/dlm/requestqueue.c +++ b/fs/dlm/requestqueue.c @@ -30,26 +30,39 @@ struct rq_entry { * lockspace is enabled on some while still suspended on others. */ -void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd) +int dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd) { struct rq_entry *e; int length = hd->h_length; + int rv = 0; if (dlm_is_removed(ls, nodeid)) - return; + return 0; e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL); if (!e) { log_print("dlm_add_requestqueue: out of memory\n"); - return; + return 0; } e->nodeid = nodeid; memcpy(e->request, hd, length); + /* We need to check dlm_locking_stopped() after taking the mutex to + avoid a race where dlm_recoverd enables locking and runs + process_requestqueue between our earlier dlm_locking_stopped check + and this addition to the requestqueue. */ + mutex_lock(&ls->ls_requestqueue_mutex); - list_add_tail(&e->list, &ls->ls_requestqueue); + if (dlm_locking_stopped(ls)) + list_add_tail(&e->list, &ls->ls_requestqueue); + else { + log_debug(ls, "dlm_add_requestqueue skip from %d", nodeid); + kfree(e); + rv = -EAGAIN; + } mutex_unlock(&ls->ls_requestqueue_mutex); + return rv; } int dlm_process_requestqueue(struct dlm_ls *ls) diff --git a/fs/dlm/requestqueue.h b/fs/dlm/requestqueue.h index 349f0d2..6a53ea0 100644 --- a/fs/dlm/requestqueue.h +++ b/fs/dlm/requestqueue.h @@ -13,7 +13,7 @@ #ifndef __REQUESTQUEUE_DOT_H__ #define __REQUESTQUEUE_DOT_H__ -void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd); +int dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd); int dlm_process_requestqueue(struct dlm_ls *ls); void dlm_wait_requestqueue(struct dlm_ls *ls); void dlm_purge_requestqueue(struct dlm_ls *ls); -- cgit v0.10.2 From 91c0dc93a1a6bbdd79707ed311e48b4397df177f Mon Sep 17 00:00:00 2001 From: David Teigland Date: Tue, 31 Oct 2006 11:56:01 -0600 Subject: [DLM] fix aborted recovery during node removal Red Hat BZ 211914 With the new cluster infrastructure, dlm recovery for a node removal can be aborted and restarted for a node addition. When this happens, the restarted recovery isn't aware that it's doing recovery for the earlier removal as well as the addition. So, it then skips the recovery steps only required when nodes are removed. This can result in locks not being purged for failed/removed nodes. The fix is to check for removed nodes for which recovery has not been completed at the start of a new recovery sequence. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/member.c b/fs/dlm/member.c index a3f7de7..85e2897 100644 --- a/fs/dlm/member.c +++ b/fs/dlm/member.c @@ -186,6 +186,14 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out) struct dlm_member *memb, *safe; int i, error, found, pos = 0, neg = 0, low = -1; + /* previously removed members that we've not finished removing need to + count as a negative change so the "neg" recovery steps will happen */ + + list_for_each_entry(memb, &ls->ls_nodes_gone, list) { + log_debug(ls, "prev removed member %d", memb->nodeid); + neg++; + } + /* move departed members from ls_nodes to ls_nodes_gone */ list_for_each_entry_safe(memb, safe, &ls->ls_nodes, list) { diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 362e3ef..4a1d602 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -164,6 +164,13 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) */ dlm_recover_rsbs(ls); + } else { + /* + * Other lockspace members may be going through the "neg" steps + * while also adding us to the lockspace, in which case they'll + * be looking for this status bit during dlm_recover_locks(). + */ + dlm_set_recover_status(ls, DLM_RS_LOCKS); } dlm_release_root_list(ls); -- cgit v0.10.2 From 2cdc98aaf072d573df10c503d3b3b0b74e2a6d06 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Tue, 31 Oct 2006 11:56:08 -0600 Subject: [DLM] fix stopping unstarted recovery Red Hat BZ 211914 When many nodes are joining a lockspace simultaneously, the dlm gets a quick sequence of stop/start events, a pair for adding each node. dlm_controld in user space sends dlm_recoverd in the kernel each stop and start event. dlm_controld will sometimes send the stop before dlm_recoverd has had a chance to take up the previously queued start. The stop aborts the processing of the previous start by setting the RECOVERY_STOP flag. dlm_recoverd is erroneously clearing this flag and ignoring the stop/abort if it happens to take up the start after the stop meant to abort it. The fix is to check the sequence number that's incremented for each stop/start before clearing the flag. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 4a1d602..6e4ee94 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -219,6 +219,10 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) return error; } +/* The dlm_ls_start() that created the rv we take here may already have been + stopped via dlm_ls_stop(); in that case we need to leave the RECOVERY_STOP + flag set. */ + static void do_ls_recovery(struct dlm_ls *ls) { struct dlm_recover *rv = NULL; @@ -226,7 +230,8 @@ static void do_ls_recovery(struct dlm_ls *ls) spin_lock(&ls->ls_recover_lock); rv = ls->ls_recover_args; ls->ls_recover_args = NULL; - clear_bit(LSFL_RECOVERY_STOP, &ls->ls_flags); + if (rv && ls->ls_recover_seq == rv->seq) + clear_bit(LSFL_RECOVERY_STOP, &ls->ls_flags); spin_unlock(&ls->ls_recover_lock); if (rv) { -- cgit v0.10.2 From 4b77f2c93d052adca8cc8690b9b5e7f8798f4ddd Mon Sep 17 00:00:00 2001 From: David Teigland Date: Wed, 1 Nov 2006 09:31:48 -0600 Subject: [DLM] do full recover_locks barrier Red Hat BZ 211914 The previous patch "[DLM] fix aborted recovery during node removal" was incomplete as discovered with further testing. It set the bit for the RS_LOCKS barrier but did not then wait for the barrier. This is often ok, but sometimes it will cause yet another recovery hang. If it's a new node that also has the lowest nodeid that skips the barrier wait, then it misses the important step of collecting and reporting the barrier status from the other nodes (which is the job of the low nodeid in the barrier wait routine). Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 6e4ee94..8bb895f 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -168,9 +168,15 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) /* * Other lockspace members may be going through the "neg" steps * while also adding us to the lockspace, in which case they'll - * be looking for this status bit during dlm_recover_locks(). + * be doing the recover_locks (RS_LOCKS) barrier. */ dlm_set_recover_status(ls, DLM_RS_LOCKS); + + error = dlm_recover_locks_wait(ls); + if (error) { + log_error(ls, "recover_locks_wait failed %d", error); + goto fail; + } } dlm_release_root_list(ls); -- cgit v0.10.2 From 6f90a8b1b87f97144911790390d56f695b59db9b Mon Sep 17 00:00:00 2001 From: David Teigland Date: Fri, 10 Nov 2006 14:16:27 -0600 Subject: [DLM] clear sbflags on lock master RH BZ 211622 The ALTMODE flag can be set in the lock master's copy of the lock but never cleared, so ALTMODE will also be returned in a subsequent conversion of the lock when it shouldn't be. This results in lock_dlm incorrectly switching to the alternate lock mode when returning the result to gfs which then asserts when it sees the wrong lock state. The fix is to propagate the cleared sbflags value to the master node when the lock is requested. QA's d_rwrandirectlarge test triggers this bug very quickly. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 6088a16..30878de 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -2372,6 +2372,7 @@ static int send_lookup_reply(struct dlm_ls *ls, struct dlm_message *ms_in, static void receive_flags(struct dlm_lkb *lkb, struct dlm_message *ms) { lkb->lkb_exflags = ms->m_exflags; + lkb->lkb_sbflags = ms->m_sbflags; lkb->lkb_flags = (lkb->lkb_flags & 0xFFFF0000) | (ms->m_flags & 0x0000FFFF); } -- cgit v0.10.2 From b98c95af01c10827e3443157651eb469071391a3 Mon Sep 17 00:00:00 2001 From: Patrick Caulfield Date: Wed, 15 Nov 2006 12:29:24 -0500 Subject: [DLM] Fix DLM config The attached patch fixes the DLM config so that it selects the chosen network transport. It should fix the bug where DLM can be left selected when NET gets unselected. This incorporates all the comments received about this patch. Cc: Adrian Bunk Cc: Andrew Morton Signed-Off-By: Patrick Caulfield Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/Kconfig b/fs/dlm/Kconfig index c5985b8..b5654a2 100644 --- a/fs/dlm/Kconfig +++ b/fs/dlm/Kconfig @@ -1,10 +1,11 @@ menu "Distributed Lock Manager" - depends on INET && IP_SCTP && EXPERIMENTAL + depends on EXPERIMENTAL && INET config DLM tristate "Distributed Lock Manager (DLM)" depends on IPV6 || IPV6=n select CONFIGFS_FS + select IP_SCTP if DLM_SCTP help A general purpose distributed lock manager for kernel or userspace applications. -- cgit v0.10.2 From ab923031ceb95ec50ef33ccadf28663c660aa94c Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 15 Nov 2006 15:17:03 -0500 Subject: [GFS2] Fix memory allocation in glock.c Change from GFP_KERNEL to GFP_NOFS as this was causing a slow down when trying to push inodes from cache. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 746347a..edc21c8 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -769,7 +769,7 @@ restart: } else { spin_unlock(&gl->gl_spin); - new_gh = gfs2_holder_get(gl, state, LM_FLAG_TRY, GFP_KERNEL); + new_gh = gfs2_holder_get(gl, state, LM_FLAG_TRY, GFP_NOFS); if (!new_gh) return; set_bit(HIF_DEMOTE, &new_gh->gh_iflags); -- cgit v0.10.2 From 4cf1ed8144e740de27c6146c25d5d7ea26679cc5 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 15 Nov 2006 15:21:06 -0500 Subject: [GFS2] Tidy up bmap & fix boundary bug This moves the locking for bmap into the bmap function itself rather than using a wrapper function. It also fixes a bug where the boundary flag was set on the wrong bh. Also the flags on the mapped bh are reset earlier in the function to ensure that they are 100% correct on the error path. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 06e3447..8240c1f 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -423,12 +423,29 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh, return 0; } +static inline void bmap_lock(struct inode *inode, int create) +{ + struct gfs2_inode *ip = GFS2_I(inode); + if (create) + down_write(&ip->i_rw_mutex); + else + down_read(&ip->i_rw_mutex); +} + +static inline void bmap_unlock(struct inode *inode, int create) +{ + struct gfs2_inode *ip = GFS2_I(inode); + if (create) + up_write(&ip->i_rw_mutex); + else + up_read(&ip->i_rw_mutex); +} + /** - * gfs2_block_pointers - Map a block from an inode to a disk block + * gfs2_block_map - Map a block from an inode to a disk block * @inode: The inode * @lblock: The logical block number - * @map_bh: The bh to be mapped - * @mp: metapath to use + * @bh_map: The bh to be mapped * * Find the block number on the current device which corresponds to an * inode's block. If the block had to be created, "new" will be set. @@ -436,8 +453,8 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh, * Returns: errno */ -static int gfs2_block_pointers(struct inode *inode, u64 lblock, int create, - struct buffer_head *bh_map, struct metapath *mp) +int gfs2_block_map(struct inode *inode, u64 lblock, int create, + struct buffer_head *bh_map) { struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_sbd *sdp = GFS2_SB(inode); @@ -451,51 +468,55 @@ static int gfs2_block_pointers(struct inode *inode, u64 lblock, int create, u64 dblock = 0; int boundary; unsigned int maxlen = bh_map->b_size >> inode->i_blkbits; + struct metapath mp; + u64 size; BUG_ON(maxlen == 0); if (gfs2_assert_warn(sdp, !gfs2_is_stuffed(ip))) return 0; + bmap_lock(inode, create); + clear_buffer_mapped(bh_map); + clear_buffer_new(bh_map); + clear_buffer_boundary(bh_map); bsize = gfs2_is_dir(ip) ? sdp->sd_jbsize : sdp->sd_sb.sb_bsize; - - height = calc_tree_height(ip, (lblock + 1) * bsize); - if (ip->i_di.di_height < height) { - if (!create) - return 0; - - error = build_height(inode, height); - if (error) - return error; + size = (lblock + 1) * bsize; + + if (size > ip->i_di.di_size) { + height = calc_tree_height(ip, size); + if (ip->i_di.di_height < height) { + if (!create) + goto out_ok; + + error = build_height(inode, height); + if (error) + goto out_fail; + } } - find_metapath(ip, lblock, mp); + find_metapath(ip, lblock, &mp); end_of_metadata = ip->i_di.di_height - 1; - error = gfs2_meta_inode_buffer(ip, &bh); if (error) - return error; + goto out_fail; for (x = 0; x < end_of_metadata; x++) { - lookup_block(ip, bh, x, mp, create, &new, &dblock); + lookup_block(ip, bh, x, &mp, create, &new, &dblock); brelse(bh); if (!dblock) - return 0; + goto out_ok; error = gfs2_meta_indirect_buffer(ip, x+1, dblock, new, &bh); if (error) - return error; + goto out_fail; } - boundary = lookup_block(ip, bh, end_of_metadata, mp, create, &new, &dblock); - clear_buffer_mapped(bh_map); - clear_buffer_new(bh_map); - clear_buffer_boundary(bh_map); - + boundary = lookup_block(ip, bh, end_of_metadata, &mp, create, &new, &dblock); if (dblock) { map_bh(bh_map, inode->i_sb, dblock); if (boundary) - set_buffer_boundary(bh); + set_buffer_boundary(bh_map); if (new) { struct buffer_head *dibh; error = gfs2_meta_inode_buffer(ip, &dibh); @@ -510,8 +531,8 @@ static int gfs2_block_pointers(struct inode *inode, u64 lblock, int create, while(--maxlen && !buffer_boundary(bh_map)) { u64 eblock; - mp->mp_list[end_of_metadata]++; - boundary = lookup_block(ip, bh, end_of_metadata, mp, 0, &new, &eblock); + mp.mp_list[end_of_metadata]++; + boundary = lookup_block(ip, bh, end_of_metadata, &mp, 0, &new, &eblock); if (eblock != ++dblock) break; bh_map->b_size += (1 << inode->i_blkbits); @@ -521,43 +542,15 @@ static int gfs2_block_pointers(struct inode *inode, u64 lblock, int create, } out_brelse: brelse(bh); - return 0; -} - - -static inline void bmap_lock(struct inode *inode, int create) -{ - struct gfs2_inode *ip = GFS2_I(inode); - if (create) - down_write(&ip->i_rw_mutex); - else - down_read(&ip->i_rw_mutex); -} - -static inline void bmap_unlock(struct inode *inode, int create) -{ - struct gfs2_inode *ip = GFS2_I(inode); - if (create) - up_write(&ip->i_rw_mutex); - else - up_read(&ip->i_rw_mutex); -} - -int gfs2_block_map(struct inode *inode, u64 lblock, int create, - struct buffer_head *bh) -{ - struct metapath mp; - int ret; - - bmap_lock(inode, create); - ret = gfs2_block_pointers(inode, lblock, create, bh, &mp); +out_ok: + error = 0; +out_fail: bmap_unlock(inode, create); - return ret; + return error; } int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen) { - struct metapath mp; struct buffer_head bh = { .b_state = 0, .b_blocknr = 0 }; int ret; int create = *new; @@ -567,9 +560,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi BUG_ON(!new); bh.b_size = 1 << (inode->i_blkbits + 5); - bmap_lock(inode, create); - ret = gfs2_block_pointers(inode, lblock, create, &bh, &mp); - bmap_unlock(inode, create); + ret = gfs2_block_map(inode, lblock, create, &bh); *extlen = bh.b_size >> inode->i_blkbits; *dblock = bh.b_blocknr; if (buffer_new(&bh)) -- cgit v0.10.2 From 175011cf6edddea32e5f5e0e04434104cc348de9 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 16 Nov 2006 10:58:55 -0500 Subject: [GFS2] Remove unused sysfs files Four of the sysfs files are unused and can therefore be removed. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index 0e0ec98..983eaf1 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -426,9 +426,6 @@ static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ } \ TUNE_ATTR_2(name, name##_store) -TUNE_ATTR(ilimit, 0); -TUNE_ATTR(ilimit_tries, 0); -TUNE_ATTR(ilimit_min, 0); TUNE_ATTR(demote_secs, 0); TUNE_ATTR(incore_log_blocks, 0); TUNE_ATTR(log_flush_secs, 0); @@ -447,7 +444,6 @@ TUNE_ATTR(quota_simul_sync, 1); TUNE_ATTR(quota_cache_secs, 1); TUNE_ATTR(max_atomic_write, 1); TUNE_ATTR(stall_secs, 1); -TUNE_ATTR(entries_per_readdir, 1); TUNE_ATTR(greedy_default, 1); TUNE_ATTR(greedy_quantum, 1); TUNE_ATTR(greedy_max, 1); @@ -459,9 +455,6 @@ TUNE_ATTR_DAEMON(quotad_secs, quotad_process); TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); static struct attribute *tune_attrs[] = { - &tune_attr_ilimit.attr, - &tune_attr_ilimit_tries.attr, - &tune_attr_ilimit_min.attr, &tune_attr_demote_secs.attr, &tune_attr_incore_log_blocks.attr, &tune_attr_log_flush_secs.attr, @@ -478,7 +471,6 @@ static struct attribute *tune_attrs[] = { &tune_attr_quota_cache_secs.attr, &tune_attr_max_atomic_write.attr, &tune_attr_stall_secs.attr, - &tune_attr_entries_per_readdir.attr, &tune_attr_greedy_default.attr, &tune_attr_greedy_quantum.attr, &tune_attr_greedy_max.attr, -- cgit v0.10.2 From dcd2479959c79d44f5dd77e71672e70f1f8b1f06 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 16 Nov 2006 11:08:16 -0500 Subject: [GFS2] Remove unused function from inode.c The gfs2_glock_nq_m_atime function is unused in so far as its only ever called with num_gh = 1, and this falls through to the gfs2_glock_nq_atime function, so we might as well call that directly. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index ea9ca23..ce7f833 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1234,92 +1234,6 @@ fail: return error; } -/** - * glock_compare_atime - Compare two struct gfs2_glock structures for sort - * @arg_a: the first structure - * @arg_b: the second structure - * - * Returns: 1 if A > B - * -1 if A < B - * 0 if A == B - */ - -static int glock_compare_atime(const void *arg_a, const void *arg_b) -{ - const struct gfs2_holder *gh_a = *(const struct gfs2_holder **)arg_a; - const struct gfs2_holder *gh_b = *(const struct gfs2_holder **)arg_b; - const struct lm_lockname *a = &gh_a->gh_gl->gl_name; - const struct lm_lockname *b = &gh_b->gh_gl->gl_name; - - if (a->ln_number > b->ln_number) - return 1; - if (a->ln_number < b->ln_number) - return -1; - if (gh_a->gh_state == LM_ST_SHARED && gh_b->gh_state == LM_ST_EXCLUSIVE) - return 1; - if (gh_a->gh_state == LM_ST_SHARED && (gh_b->gh_flags & GL_ATIME)) - return 1; - - return 0; -} - -/** - * gfs2_glock_nq_m_atime - acquire multiple glocks where one may need an - * atime update - * @num_gh: the number of structures - * @ghs: an array of struct gfs2_holder structures - * - * Returns: 0 on success (all glocks acquired), - * errno on failure (no glocks acquired) - */ - -int gfs2_glock_nq_m_atime(unsigned int num_gh, struct gfs2_holder *ghs) -{ - struct gfs2_holder **p; - unsigned int x; - int error = 0; - - if (!num_gh) - return 0; - - if (num_gh == 1) { - ghs->gh_flags &= ~(LM_FLAG_TRY | GL_ASYNC); - if (ghs->gh_flags & GL_ATIME) - error = gfs2_glock_nq_atime(ghs); - else - error = gfs2_glock_nq(ghs); - return error; - } - - p = kcalloc(num_gh, sizeof(struct gfs2_holder *), GFP_KERNEL); - if (!p) - return -ENOMEM; - - for (x = 0; x < num_gh; x++) - p[x] = &ghs[x]; - - sort(p, num_gh, sizeof(struct gfs2_holder *), glock_compare_atime,NULL); - - for (x = 0; x < num_gh; x++) { - p[x]->gh_flags &= ~(LM_FLAG_TRY | GL_ASYNC); - - if (p[x]->gh_flags & GL_ATIME) - error = gfs2_glock_nq_atime(p[x]); - else - error = gfs2_glock_nq(p[x]); - - if (error) { - while (x--) - gfs2_glock_dq(p[x]); - break; - } - } - - kfree(p); - return error; -} - - static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr) { diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 46917ed..b57f448 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -50,12 +50,8 @@ int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, struct gfs2_inode *ip); int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to); int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len); - int gfs2_glock_nq_atime(struct gfs2_holder *gh); -int gfs2_glock_nq_m_atime(unsigned int num_gh, struct gfs2_holder *ghs); - int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr); - struct inode *gfs2_lookup_simple(struct inode *dip, const char *name); #endif /* __INODE_DOT_H__ */ diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 2f7ef98..8676c39 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -217,7 +217,7 @@ static int gfs2_readpage(struct file *file, struct page *page) } gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|LM_FLAG_TRY_1CB, &gh); do_unlock = 1; - error = gfs2_glock_nq_m_atime(1, &gh); + error = gfs2_glock_nq_atime(&gh); if (unlikely(error)) goto out_unlock; } @@ -282,7 +282,7 @@ static int gfs2_readpages(struct file *file, struct address_space *mapping, gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_TRY_1CB|GL_ATIME, &gh); do_unlock = 1; - ret = gfs2_glock_nq_m_atime(1, &gh); + ret = gfs2_glock_nq_atime(&gh); if (ret == GLR_TRYFAILED) goto out_noerror; if (unlikely(ret)) @@ -354,7 +354,7 @@ static int gfs2_prepare_write(struct file *file, struct page *page, gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME|LM_FLAG_TRY_1CB, &ip->i_gh); - error = gfs2_glock_nq_m_atime(1, &ip->i_gh); + error = gfs2_glock_nq_atime(&ip->i_gh); if (unlikely(error)) { if (error == GLR_TRYFAILED) error = AOP_TRUNCATED_PAGE; @@ -609,7 +609,7 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb, * on this path. All we need change is atime. */ gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &gh); - rv = gfs2_glock_nq_m_atime(1, &gh); + rv = gfs2_glock_nq_atime(&gh); if (rv) goto out; diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index eabf6c6..c2be216 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -253,7 +253,7 @@ static int gfs2_get_flags(struct file *filp, u32 __user *ptr) u32 fsflags; gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &gh); - error = gfs2_glock_nq_m_atime(1, &gh); + error = gfs2_glock_nq_atime(&gh); if (error) return error; -- cgit v0.10.2 From 5e7d65cd9d3819512b059f4260de0119b985454c Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Fri, 17 Nov 2006 12:27:44 -0500 Subject: [GFS2] Make sentinel dirents compatible with gfs1 When deleting directory entries, we set the inum.no_addr to zero in a dirent when its the first dirent in a block and thus cannot be merged into the previous dirent as is the usual case. In gfs1, inum.no_formal_ino was used instead. This patch changes gfs2 to set both inum.no_addr and inum.no_formal_ino to zero. It also changes the test from just looking at inum.no_addr to look at both inum.no_addr and inum.no_formal_ino and a sentinel is now considered to be a dirent in which _either_ (or both) of them is set to zero. This resolves Red Hat bugzillas: #215809, #211465 Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index a2923fb..0fdcb77 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -340,10 +340,15 @@ fail: return (copied) ? copied : error; } +static inline int gfs2_dirent_sentinel(const struct gfs2_dirent *dent) +{ + return dent->de_inum.no_addr == 0 || dent->de_inum.no_formal_ino == 0; +} + static inline int __gfs2_dirent_find(const struct gfs2_dirent *dent, const struct qstr *name, int ret) { - if (dent->de_inum.no_addr != 0 && + if (!gfs2_dirent_sentinel(dent) && be32_to_cpu(dent->de_hash) == name->hash && be16_to_cpu(dent->de_name_len) == name->len && memcmp(dent+1, name->name, name->len) == 0) @@ -388,7 +393,7 @@ static int gfs2_dirent_find_space(const struct gfs2_dirent *dent, unsigned actual = GFS2_DIRENT_SIZE(be16_to_cpu(dent->de_name_len)); unsigned totlen = be16_to_cpu(dent->de_rec_len); - if (!dent->de_inum.no_addr) + if (gfs2_dirent_sentinel(dent)) actual = GFS2_DIRENT_SIZE(0); if (totlen - actual >= required) return 1; @@ -405,7 +410,7 @@ static int gfs2_dirent_gather(const struct gfs2_dirent *dent, void *opaque) { struct dirent_gather *g = opaque; - if (dent->de_inum.no_addr) { + if (!gfs2_dirent_sentinel(dent)) { g->pdent[g->offset++] = dent; } return 0; @@ -433,10 +438,10 @@ static int gfs2_check_dirent(struct gfs2_dirent *dent, unsigned int offset, if (unlikely(offset + size > len)) goto error; msg = "zero inode number"; - if (unlikely(!first && !dent->de_inum.no_addr)) + if (unlikely(!first && gfs2_dirent_sentinel(dent))) goto error; msg = "name length is greater than space in dirent"; - if (dent->de_inum.no_addr && + if (!gfs2_dirent_sentinel(dent) && unlikely(sizeof(struct gfs2_dirent)+be16_to_cpu(dent->de_name_len) > size)) goto error; @@ -598,7 +603,7 @@ static int dirent_next(struct gfs2_inode *dip, struct buffer_head *bh, return ret; /* Only the first dent could ever have de_inum.no_addr == 0 */ - if (!tmp->de_inum.no_addr) { + if (gfs2_dirent_sentinel(tmp)) { gfs2_consist_inode(dip); return -EIO; } @@ -621,7 +626,7 @@ static void dirent_del(struct gfs2_inode *dip, struct buffer_head *bh, { u16 cur_rec_len, prev_rec_len; - if (!cur->de_inum.no_addr) { + if (gfs2_dirent_sentinel(cur)) { gfs2_consist_inode(dip); return; } @@ -633,7 +638,8 @@ static void dirent_del(struct gfs2_inode *dip, struct buffer_head *bh, out the inode number and return. */ if (!prev) { - cur->de_inum.no_addr = 0; /* No endianess worries */ + cur->de_inum.no_addr = 0; + cur->de_inum.no_formal_ino = 0; return; } @@ -664,7 +670,7 @@ static struct gfs2_dirent *gfs2_init_dirent(struct inode *inode, struct gfs2_dirent *ndent; unsigned offset = 0, totlen; - if (dent->de_inum.no_addr) + if (!gfs2_dirent_sentinel(dent)) offset = GFS2_DIRENT_SIZE(be16_to_cpu(dent->de_name_len)); totlen = be16_to_cpu(dent->de_rec_len); BUG_ON(offset + name->len > totlen); @@ -1002,7 +1008,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) if (dirent_next(dip, obh, &next)) next = NULL; - if (dent->de_inum.no_addr && + if (!gfs2_dirent_sentinel(dent) && be32_to_cpu(dent->de_hash) < divider) { struct qstr str; str.name = (char*)(dent+1); -- cgit v0.10.2 From fa2ecfc5e11b12f25b67f9c84ac6b0e74a6a0115 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Mon, 20 Nov 2006 10:04:49 -0500 Subject: [GFS2] Fix Kconfig wrt CRC32 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit GFS2 requires the CRC32 library function. This was reported by Toralf Förster. Cc: Toralf Förster Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig index 8c27de8..c0791cb 100644 --- a/fs/gfs2/Kconfig +++ b/fs/gfs2/Kconfig @@ -2,6 +2,7 @@ config GFS2_FS tristate "GFS2 file system support" depends on EXPERIMENTAL select FS_POSIX_ACL + select CRC32 help A cluster filesystem. -- cgit v0.10.2 From 1a14d3a68f04527546121eb7b45187ff6af63151 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Mon, 20 Nov 2006 10:37:45 -0500 Subject: [GFS2] Simplify glops functions The go_sync callback took two flags, but one of them was set on every call, so this patch removes once of the flags and makes the previously conditional operations (on this flag), unconditional. The go_inval callback took three flags, each of which was set on every call to it. This patch removes the flags and makes the operations unconditional, which makes the logic rather more obvious. Two now unused flags are also removed from incore.h. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index edc21c8..b8ba4d5 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -847,12 +847,12 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret) if (prev_state != LM_ST_UNLOCKED && !(ret & LM_OUT_CACHEABLE)) { if (glops->go_inval) - glops->go_inval(gl, DIO_METADATA | DIO_DATA); + glops->go_inval(gl, DIO_METADATA); } else if (gl->gl_state == LM_ST_DEFERRED) { /* We might not want to do this here. Look at moving to the inode glops. */ if (glops->go_inval) - glops->go_inval(gl, DIO_DATA); + glops->go_inval(gl, 0); } /* Deal with each possible exit condition */ @@ -954,7 +954,7 @@ void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags) gfs2_assert_warn(sdp, state != gl->gl_state); if (gl->gl_state == LM_ST_EXCLUSIVE && glops->go_sync) - glops->go_sync(gl, DIO_METADATA | DIO_DATA | DIO_RELEASE); + glops->go_sync(gl); gfs2_glock_hold(gl); gl->gl_req_bh = xmote_bh; @@ -995,7 +995,7 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret) state_change(gl, LM_ST_UNLOCKED); if (glops->go_inval) - glops->go_inval(gl, DIO_METADATA | DIO_DATA); + glops->go_inval(gl, DIO_METADATA); if (gh) { spin_lock(&gl->gl_spin); @@ -1041,7 +1041,7 @@ void gfs2_glock_drop_th(struct gfs2_glock *gl) gfs2_assert_warn(sdp, gl->gl_state != LM_ST_UNLOCKED); if (gl->gl_state == LM_ST_EXCLUSIVE && glops->go_sync) - glops->go_sync(gl, DIO_METADATA | DIO_DATA | DIO_RELEASE); + glops->go_sync(gl); gfs2_glock_hold(gl); gl->gl_req_bh = drop_bh; diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index b92de0a..60561ca 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -173,23 +173,18 @@ static void gfs2_page_writeback(struct gfs2_glock *gl) /** * meta_go_sync - sync out the metadata for this glock * @gl: the glock - * @flags: DIO_* * * Called when demoting or unlocking an EX glock. We must flush * to disk all dirty buffers/pages relating to this glock, and must not * not return to caller to demote/unlock the glock until I/O is complete. */ -static void meta_go_sync(struct gfs2_glock *gl, int flags) +static void meta_go_sync(struct gfs2_glock *gl) { - if (!(flags & DIO_METADATA)) - return; - if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) { gfs2_log_flush(gl->gl_sbd, gl); gfs2_meta_sync(gl); - if (flags & DIO_RELEASE) - gfs2_ail_empty_gl(gl); + gfs2_ail_empty_gl(gl); } } @@ -264,31 +259,18 @@ static void inode_go_drop_th(struct gfs2_glock *gl) /** * inode_go_sync - Sync the dirty data and/or metadata for an inode glock * @gl: the glock protecting the inode - * @flags: * */ -static void inode_go_sync(struct gfs2_glock *gl, int flags) +static void inode_go_sync(struct gfs2_glock *gl) { - int meta = (flags & DIO_METADATA); - int data = (flags & DIO_DATA); - if (test_bit(GLF_DIRTY, &gl->gl_flags)) { - if (meta && data) { - gfs2_page_writeback(gl); - gfs2_log_flush(gl->gl_sbd, gl); - gfs2_meta_sync(gl); - gfs2_page_wait(gl); - clear_bit(GLF_DIRTY, &gl->gl_flags); - } else if (meta) { - gfs2_log_flush(gl->gl_sbd, gl); - gfs2_meta_sync(gl); - } else if (data) { - gfs2_page_writeback(gl); - gfs2_page_wait(gl); - } - if (flags & DIO_RELEASE) - gfs2_ail_empty_gl(gl); + gfs2_page_writeback(gl); + gfs2_log_flush(gl->gl_sbd, gl); + gfs2_meta_sync(gl); + gfs2_page_wait(gl); + clear_bit(GLF_DIRTY, &gl->gl_flags); + gfs2_ail_empty_gl(gl); } } @@ -302,15 +284,13 @@ static void inode_go_sync(struct gfs2_glock *gl, int flags) static void inode_go_inval(struct gfs2_glock *gl, int flags) { int meta = (flags & DIO_METADATA); - int data = (flags & DIO_DATA); if (meta) { struct gfs2_inode *ip = gl->gl_object; gfs2_meta_inval(gl); set_bit(GIF_INVALID, &ip->i_flags); } - if (data) - gfs2_page_inval(gl); + gfs2_page_inval(gl); } /** @@ -494,7 +474,7 @@ static void trans_go_xmote_bh(struct gfs2_glock *gl) if (gl->gl_state != LM_ST_UNLOCKED && test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { gfs2_meta_cache_flush(GFS2_I(sdp->sd_jdesc->jd_inode)); - j_gl->gl_ops->go_inval(j_gl, DIO_METADATA | DIO_DATA); + j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); error = gfs2_find_jhead(sdp->sd_jdesc, &head); if (error) diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 227a74d..734421e 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -14,8 +14,6 @@ #define DIO_WAIT 0x00000010 #define DIO_METADATA 0x00000020 -#define DIO_DATA 0x00000040 -#define DIO_RELEASE 0x00000080 #define DIO_ALL 0x00000100 struct gfs2_log_operations; @@ -103,18 +101,17 @@ struct gfs2_bufdata { }; struct gfs2_glock_operations { - void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state, - int flags); - void (*go_xmote_bh) (struct gfs2_glock * gl); - void (*go_drop_th) (struct gfs2_glock * gl); - void (*go_drop_bh) (struct gfs2_glock * gl); - void (*go_sync) (struct gfs2_glock * gl, int flags); - void (*go_inval) (struct gfs2_glock * gl, int flags); - int (*go_demote_ok) (struct gfs2_glock * gl); - int (*go_lock) (struct gfs2_holder * gh); - void (*go_unlock) (struct gfs2_holder * gh); - void (*go_callback) (struct gfs2_glock * gl, unsigned int state); - void (*go_greedy) (struct gfs2_glock * gl); + void (*go_xmote_th) (struct gfs2_glock *gl, unsigned int state, int flags); + void (*go_xmote_bh) (struct gfs2_glock *gl); + void (*go_drop_th) (struct gfs2_glock *gl); + void (*go_drop_bh) (struct gfs2_glock *gl); + void (*go_sync) (struct gfs2_glock *gl); + void (*go_inval) (struct gfs2_glock *gl, int flags); + int (*go_demote_ok) (struct gfs2_glock *gl); + int (*go_lock) (struct gfs2_holder *gh); + void (*go_unlock) (struct gfs2_holder *gh); + void (*go_callback) (struct gfs2_glock *gl, unsigned int state); + void (*go_greedy) (struct gfs2_glock *gl); const int go_type; }; diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 0ef8317..1408c5f 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -517,7 +517,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) return error; gfs2_meta_cache_flush(ip); - j_gl->gl_ops->go_inval(j_gl, DIO_METADATA | DIO_DATA); + j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); error = gfs2_find_jhead(sdp->sd_jdesc, &head); if (error) -- cgit v0.10.2 From 28626e2078571c4b776a17eaa486bbd2b7dfe2cd Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 22 Nov 2006 11:13:21 -0500 Subject: [GFS2] Fix glock ordering on inode creation The lock order here should be parent -> child rather than numeric order. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index ce7f833..d122074c 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -870,33 +870,10 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, if (error) goto fail_gunlock; - if (inum.no_addr < dip->i_num.no_addr) { - gfs2_glock_dq(ghs); - - error = gfs2_glock_nq_num(sdp, inum.no_addr, - &gfs2_inode_glops, LM_ST_EXCLUSIVE, - GL_SKIP, ghs + 1); - if (error) { - return ERR_PTR(error); - } - - gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs); - error = gfs2_glock_nq(ghs); - if (error) { - gfs2_glock_dq_uninit(ghs + 1); - return ERR_PTR(error); - } - - error = create_ok(dip, name, mode); - if (error) - goto fail_gunlock2; - } else { - error = gfs2_glock_nq_num(sdp, inum.no_addr, - &gfs2_inode_glops, LM_ST_EXCLUSIVE, - GL_SKIP, ghs + 1); - if (error) - goto fail_gunlock; - } + error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops, + LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); + if (error) + goto fail_gunlock; error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev); if (error) -- cgit v0.10.2 From ae619320b22f8e0b2bbe4a3a5ac2f9ccf08d7ec2 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 22 Nov 2006 11:28:47 -0500 Subject: [GFS2] mark_inode_dirty after write to stuffed file Writes to stuffed files were not being marked dirty correctly. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index 8676c39..d8d69a7 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -472,8 +472,10 @@ static int gfs2_commit_write(struct file *file, struct page *page, SetPageUptodate(page); - if (inode->i_size < file_size) + if (inode->i_size < file_size) { i_size_write(inode, file_size); + mark_inode_dirty(inode); + } } else { if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip)) -- cgit v0.10.2 From b004157ab5b374a498a5874cda68c389219d23e7 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 23 Nov 2006 10:51:34 -0500 Subject: [GFS2] Fix journal flush problem This fixes a bug which resulted in poor performance due to flushing the journal too often. The code path in question was via the inode_go_sync() function in glops.c. The solution is not to flush the journal immediately when inodes are ejected from memory, but batch up the work for glockd to deal with later on. This means that glocks may now live on beyond the end of the lifetime of their inodes (but not very much longer in the normal case). Also fixed in this patch is a bug (which was hidden by the bug mentioned above) in calculation of the number of free journal blocks. The gfs2_logd process has been altered to be more responsive to the journal filling up. We now wake it up when the number of uncommitted journal blocks has reached the threshold level rather than trying to flush directly at the end of each transaction. This again means doing fewer, but larger, log flushes in general. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/daemon.c b/fs/gfs2/daemon.c index cab1f68..683cb5b 100644 --- a/fs/gfs2/daemon.c +++ b/fs/gfs2/daemon.c @@ -112,6 +112,7 @@ int gfs2_logd(void *data) struct gfs2_sbd *sdp = data; struct gfs2_holder ji_gh; unsigned long t; + int need_flush; while (!kthread_should_stop()) { /* Advance the log tail */ @@ -120,8 +121,10 @@ int gfs2_logd(void *data) gfs2_tune_get(sdp, gt_log_flush_secs) * HZ; gfs2_ail1_empty(sdp, DIO_ALL); - - if (time_after_eq(jiffies, t)) { + gfs2_log_lock(sdp); + need_flush = sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks); + gfs2_log_unlock(sdp); + if (need_flush || time_after_eq(jiffies, t)) { gfs2_log_flush(sdp, NULL); sdp->sd_log_flush_time = jiffies; } diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index b8ba4d5..3c2ff81 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -785,21 +785,6 @@ out: gfs2_holder_put(new_gh); } -void gfs2_glock_inode_squish(struct inode *inode) -{ - struct gfs2_holder gh; - struct gfs2_glock *gl = GFS2_I(inode)->i_gl; - gfs2_holder_init(gl, LM_ST_UNLOCKED, 0, &gh); - set_bit(HIF_DEMOTE, &gh.gh_iflags); - spin_lock(&gl->gl_spin); - gfs2_assert(inode->i_sb->s_fs_info, list_empty(&gl->gl_holders)); - list_add_tail(&gh.gh_list, &gl->gl_waiters2); - run_queue(gl); - spin_unlock(&gl->gl_spin); - wait_for_completion(&gh.gh_wait); - gfs2_holder_uninit(&gh); -} - /** * state_change - record that the glock is now in a different state * @gl: the glock @@ -1920,7 +1905,7 @@ out: static void scan_glock(struct gfs2_glock *gl) { - if (gl->gl_ops == &gfs2_inode_glops) + if (gl->gl_ops == &gfs2_inode_glops && gl->gl_object) return; if (gfs2_glmutex_trylock(gl)) { diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index a331bf8..fb39108 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -106,7 +106,6 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs); void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, u64 number, const struct gfs2_glock_operations *glops, unsigned int state, int flags); -void gfs2_glock_inode_squish(struct inode *inode); /** * gfs2_glock_nq_init - intialize a holder and enqueue it on a glock diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 60561ca..b068d10 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -107,70 +107,6 @@ static void gfs2_pte_inval(struct gfs2_glock *gl) } /** - * gfs2_page_inval - Invalidate all pages associated with a glock - * @gl: the glock - * - */ - -static void gfs2_page_inval(struct gfs2_glock *gl) -{ - struct gfs2_inode *ip; - struct inode *inode; - - ip = gl->gl_object; - inode = &ip->i_inode; - if (!ip || !S_ISREG(inode->i_mode)) - return; - - truncate_inode_pages(inode->i_mapping, 0); - gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !inode->i_mapping->nrpages); - clear_bit(GIF_PAGED, &ip->i_flags); -} - -/** - * gfs2_page_wait - Wait for writeback of data - * @gl: the glock - * - * Syncs data (not metadata) for a regular file. - * No-op for all other types. - */ - -static void gfs2_page_wait(struct gfs2_glock *gl) -{ - struct gfs2_inode *ip = gl->gl_object; - struct inode *inode = &ip->i_inode; - struct address_space *mapping = inode->i_mapping; - int error; - - if (!S_ISREG(inode->i_mode)) - return; - - error = filemap_fdatawait(mapping); - - /* Put back any errors cleared by filemap_fdatawait() - so they can be caught by someone who can pass them - up to user space. */ - - if (error == -ENOSPC) - set_bit(AS_ENOSPC, &mapping->flags); - else if (error) - set_bit(AS_EIO, &mapping->flags); - -} - -static void gfs2_page_writeback(struct gfs2_glock *gl) -{ - struct gfs2_inode *ip = gl->gl_object; - struct inode *inode = &ip->i_inode; - struct address_space *mapping = inode->i_mapping; - - if (!S_ISREG(inode->i_mode)) - return; - - filemap_fdatawrite(mapping); -} - -/** * meta_go_sync - sync out the metadata for this glock * @gl: the glock * @@ -264,11 +200,24 @@ static void inode_go_drop_th(struct gfs2_glock *gl) static void inode_go_sync(struct gfs2_glock *gl) { + struct gfs2_inode *ip = gl->gl_object; + + if (ip && !S_ISREG(ip->i_inode.i_mode)) + ip = NULL; + if (test_bit(GLF_DIRTY, &gl->gl_flags)) { - gfs2_page_writeback(gl); gfs2_log_flush(gl->gl_sbd, gl); + if (ip) + filemap_fdatawrite(ip->i_inode.i_mapping); gfs2_meta_sync(gl); - gfs2_page_wait(gl); + if (ip) { + struct address_space *mapping = ip->i_inode.i_mapping; + int error = filemap_fdatawait(mapping); + if (error == -ENOSPC) + set_bit(AS_ENOSPC, &mapping->flags); + else if (error) + set_bit(AS_EIO, &mapping->flags); + } clear_bit(GLF_DIRTY, &gl->gl_flags); gfs2_ail_empty_gl(gl); } @@ -283,14 +232,20 @@ static void inode_go_sync(struct gfs2_glock *gl) static void inode_go_inval(struct gfs2_glock *gl, int flags) { + struct gfs2_inode *ip = gl->gl_object; int meta = (flags & DIO_METADATA); if (meta) { - struct gfs2_inode *ip = gl->gl_object; gfs2_meta_inval(gl); - set_bit(GIF_INVALID, &ip->i_flags); + if (ip) + set_bit(GIF_INVALID, &ip->i_flags); + } + + if (ip && S_ISREG(ip->i_inode.i_mode)) { + truncate_inode_pages(ip->i_inode.i_mapping, 0); + gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !ip->i_inode.i_mapping->nrpages); + clear_bit(GIF_PAGED, &ip->i_flags); } - gfs2_page_inval(gl); } /** diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 0cace3d..6456fc3 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -261,6 +261,12 @@ static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail) * @sdp: The GFS2 superblock * @blks: The number of blocks to reserve * + * Note that we never give out the last 6 blocks of the journal. Thats + * due to the fact that there is are a small number of header blocks + * associated with each log flush. The exact number can't be known until + * flush time, so we ensure that we have just enough free blocks at all + * times to avoid running out during a log flush. + * * Returns: errno */ @@ -274,7 +280,7 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks) mutex_lock(&sdp->sd_log_reserve_mutex); gfs2_log_lock(sdp); - while(sdp->sd_log_blks_free <= blks) { + while(sdp->sd_log_blks_free <= (blks + 6)) { gfs2_log_unlock(sdp); gfs2_ail1_empty(sdp, 0); gfs2_log_flush(sdp, NULL); @@ -643,12 +649,9 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) up_read(&sdp->sd_log_flush_lock); gfs2_log_lock(sdp); - if (sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks)) { - gfs2_log_unlock(sdp); - gfs2_log_flush(sdp, NULL); - } else { - gfs2_log_unlock(sdp); - } + if (sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks)) + wake_up_process(sdp->sd_logd_process); + gfs2_log_unlock(sdp); } /** diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 3912d6a..939a09f 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -472,6 +472,9 @@ int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num, struct buffer_head *bh = NULL, **bh_slot = ip->i_cache + height; int in_cache = 0; + BUG_ON(!gl); + BUG_ON(!sdp); + spin_lock(&ip->i_spin); if (*bh_slot && (*bh_slot)->b_blocknr == num) { bh = *bh_slot; diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c index 8635175..7685b46 100644 --- a/fs/gfs2/ops_super.c +++ b/fs/gfs2/ops_super.c @@ -157,7 +157,8 @@ static void gfs2_write_super(struct super_block *sb) static int gfs2_sync_fs(struct super_block *sb, int wait) { sb->s_dirt = 0; - gfs2_log_flush(sb->s_fs_info, NULL); + if (wait) + gfs2_log_flush(sb->s_fs_info, NULL); return 0; } @@ -293,8 +294,6 @@ static void gfs2_clear_inode(struct inode *inode) */ if (inode->i_private) { struct gfs2_inode *ip = GFS2_I(inode); - gfs2_glock_inode_squish(inode); - gfs2_assert(inode->i_sb->s_fs_info, ip->i_gl->gl_state == LM_ST_UNLOCKED); ip->i_gl->gl_object = NULL; gfs2_glock_schedule_for_reclaim(ip->i_gl); gfs2_glock_put(ip->i_gl); @@ -395,7 +394,7 @@ static void gfs2_delete_inode(struct inode *inode) if (!inode->i_private) goto out; - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &gh); + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB, &gh); if (unlikely(error)) { gfs2_glock_dq_uninit(&ip->i_iopen_gh); goto out; -- cgit v0.10.2 From a25311c8e0b7071b129ca9a9e49e22eeaf620864 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 23 Nov 2006 11:06:35 -0500 Subject: [GFS2] Move gfs2_meta_syncfs() into log.c By moving gfs2_meta_syncfs() into log.c, gfs2_ail1_start() can be made static. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 6456fc3..7713d59 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -15,6 +15,7 @@ #include #include #include +#include #include "gfs2.h" #include "incore.h" @@ -142,7 +143,7 @@ static int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int fl return list_empty(&ai->ai_ail1_list); } -void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags) +static void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags) { struct list_head *head = &sdp->sd_ail1_list; u64 sync_gen; @@ -689,3 +690,21 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp) up_write(&sdp->sd_log_flush_lock); } + +/** + * gfs2_meta_syncfs - sync all the buffers in a filesystem + * @sdp: the filesystem + * + */ + +void gfs2_meta_syncfs(struct gfs2_sbd *sdp) +{ + gfs2_log_flush(sdp, NULL); + for (;;) { + gfs2_ail1_start(sdp, DIO_ALL); + if (gfs2_ail1_empty(sdp, DIO_ALL)) + break; + msleep(10); + } +} + diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h index 7f5737d..8e7aa0f 100644 --- a/fs/gfs2/log.h +++ b/fs/gfs2/log.h @@ -48,7 +48,6 @@ static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, unsigned int ssize); -void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags); int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags); int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); @@ -61,5 +60,6 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); void gfs2_log_shutdown(struct gfs2_sbd *sdp); +void gfs2_meta_syncfs(struct gfs2_sbd *sdp); #endif /* __LOG_DOT_H__ */ diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 939a09f..fbeba81 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -574,20 +574,3 @@ out: return first_bh; } -/** - * gfs2_meta_syncfs - sync all the buffers in a filesystem - * @sdp: the filesystem - * - */ - -void gfs2_meta_syncfs(struct gfs2_sbd *sdp) -{ - gfs2_log_flush(sdp, NULL); - for (;;) { - gfs2_ail1_start(sdp, DIO_ALL); - if (gfs2_ail1_empty(sdp, DIO_ALL)) - break; - msleep(10); - } -} - diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h index 3ec939e..e037425 100644 --- a/fs/gfs2/meta_io.h +++ b/fs/gfs2/meta_io.h @@ -67,7 +67,6 @@ static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip, } struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen); -void gfs2_meta_syncfs(struct gfs2_sbd *sdp); #define buffer_busy(bh) \ ((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned))) -- cgit v0.10.2 From cb4c03131836a55bf95e1c165409244ac6b4f39f Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 23 Nov 2006 11:16:32 -0500 Subject: [GFS2] Reduce number of arguments to meta_io.c:getbuf() Since the superblock and the address_space are determined by the glock, we might as well just pass that as the argument since all the callers already have that available. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index fbeba81..0e34d99 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -127,17 +127,17 @@ void gfs2_meta_sync(struct gfs2_glock *gl) /** * getbuf - Get a buffer with a given address space - * @sdp: the filesystem - * @aspace: the address space + * @gl: the glock * @blkno: the block number (filesystem scope) * @create: 1 if the buffer should be created * * Returns: the buffer */ -static struct buffer_head *getbuf(struct gfs2_sbd *sdp, struct inode *aspace, - u64 blkno, int create) +static struct buffer_head *getbuf(struct gfs2_glock *gl, u64 blkno, int create) { + struct address_space *mapping = gl->gl_aspace->i_mapping; + struct gfs2_sbd *sdp = gl->gl_sbd; struct page *page; struct buffer_head *bh; unsigned int shift; @@ -150,13 +150,13 @@ static struct buffer_head *getbuf(struct gfs2_sbd *sdp, struct inode *aspace, if (create) { for (;;) { - page = grab_cache_page(aspace->i_mapping, index); + page = grab_cache_page(mapping, index); if (page) break; yield(); } } else { - page = find_lock_page(aspace->i_mapping, index); + page = find_lock_page(mapping, index); if (!page) return NULL; } @@ -202,7 +202,7 @@ static void meta_prep_new(struct buffer_head *bh) struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno) { struct buffer_head *bh; - bh = getbuf(gl->gl_sbd, gl->gl_aspace, blkno, CREATE); + bh = getbuf(gl, blkno, CREATE); meta_prep_new(bh); return bh; } @@ -220,7 +220,7 @@ struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno) int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags, struct buffer_head **bhp) { - *bhp = getbuf(gl->gl_sbd, gl->gl_aspace, blkno, CREATE); + *bhp = getbuf(gl, blkno, CREATE); if (!buffer_uptodate(*bhp)) ll_rw_block(READ_META, 1, bhp); if (flags & DIO_WAIT) { @@ -379,11 +379,10 @@ void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, void gfs2_meta_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); - struct inode *aspace = ip->i_gl->gl_aspace; struct buffer_head *bh; while (blen) { - bh = getbuf(sdp, aspace, bstart, NO_CREATE); + bh = getbuf(ip->i_gl, bstart, NO_CREATE); if (bh) { struct gfs2_bufdata *bd = bh->b_private; @@ -484,7 +483,7 @@ int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num, spin_unlock(&ip->i_spin); if (!bh) - bh = getbuf(gl->gl_sbd, gl->gl_aspace, num, CREATE); + bh = getbuf(gl, num, CREATE); if (!bh) return -ENOBUFS; @@ -535,7 +534,6 @@ err: struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen) { struct gfs2_sbd *sdp = gl->gl_sbd; - struct inode *aspace = gl->gl_aspace; struct buffer_head *first_bh, *bh; u32 max_ra = gfs2_tune_get(sdp, gt_max_readahead) >> sdp->sd_sb.sb_bsize_shift; @@ -547,7 +545,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen) if (extlen > max_ra) extlen = max_ra; - first_bh = getbuf(sdp, aspace, dblock, CREATE); + first_bh = getbuf(gl, dblock, CREATE); if (buffer_uptodate(first_bh)) goto out; @@ -558,7 +556,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen) extlen--; while (extlen) { - bh = getbuf(sdp, aspace, dblock, CREATE); + bh = getbuf(gl, dblock, CREATE); if (!buffer_uptodate(bh) && !buffer_locked(bh)) ll_rw_block(READA, 1, &bh); -- cgit v0.10.2 From 300c7d75f3a5e8edd3e390ccd56b808f3fb14e33 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Mon, 27 Nov 2006 09:55:28 -0500 Subject: [GFS2] Fix recursive locking in gfs2_permission Since gfs2_permission may be called either from the VFS (in which case we need to obtain a shared glock) or from GFS2 (in which case we already have a glock) we need to test to see whether or not a lock is required. The original test was buggy due to a potential race. This one should be safe. This fixes Red Hat bugzilla #217129 Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index b247f25..fd9fee2 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -835,6 +835,10 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) * @mask: * @nd: passed from Linux VFS, ignored by us * + * This may be called from the VFS directly, or from within GFS2 with the + * inode locked, so we look to see if the glock is already locked and only + * lock the glock if its not already been done. + * * Returns: errno */ @@ -843,15 +847,18 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_holder i_gh; int error; + int unlock = 0; - if (!test_bit(GIF_INVALID, &ip->i_flags)) - return generic_permission(inode, mask, gfs2_check_acl); + if (gfs2_glock_is_locked_by_me(ip->i_gl) == 0) { + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); + if (error) + return error; + unlock = 1; + } - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); - if (!error) { - error = generic_permission(inode, mask, gfs2_check_acl_locked); + error = generic_permission(inode, mask, gfs2_check_acl_locked); + if (unlock) gfs2_glock_dq_uninit(&i_gh); - } return error; } -- cgit v0.10.2 From dcf3dd852f554bb0016aa23892596717cc123a26 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Mon, 27 Nov 2006 10:12:05 -0500 Subject: [GFS2] Fix recursive locking in gfs2_getattr The readdirplus NFS operation can result in gfs2_getattr being called with the glock already held. In this case we do not want to try and grab the lock again. This fixes Red Hat bugzilla #215727 Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index fd9fee2..fbe38c1 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -992,6 +992,12 @@ out: * @dentry: The dentry to stat * @stat: The inode's stats * + * This may be called from the VFS directly, or from within GFS2 with the + * inode locked, so we look to see if the glock is already locked and only + * lock the glock if its not already been done. Note that its the NFS + * readdirplus operation which causes this to be called (from filldir) + * with the glock already held. + * * Returns: errno */ @@ -1002,14 +1008,20 @@ static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_holder gh; int error; + int unlock = 0; - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); - if (!error) { - generic_fillattr(inode, stat); - gfs2_glock_dq_uninit(&gh); + if (gfs2_glock_is_locked_by_me(ip->i_gl) == 0) { + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); + if (error) + return error; + unlock = 1; } - return error; + generic_fillattr(inode, stat); + if (unlock); + gfs2_glock_dq_uninit(&gh); + + return 0; } static int gfs2_setxattr(struct dentry *dentry, const char *name, -- cgit v0.10.2 From 2896ee37ccc1f9acb244c9b02becb74a43661009 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 27 Nov 2006 11:31:22 -0600 Subject: [DLM] fix add_requestqueue checking nodes list Requests that arrive after recovery has started are saved in the requestqueue and processed after recovery is done. Some of these requests are purged during recovery if they are from nodes that have been removed. We move the purging of the requests (dlm_purge_requestqueue) to later in the recovery sequence which allows the routine saving requests (dlm_add_requestqueue) to avoid filtering out requests by nodeid since the same will be done by the purge. The current code has add_requestqueue filtering by nodeid but doesn't hold any locks when accessing the list of current nodes. This also means that we need to call the purge routine when the lockspace is being shut down since the add routine will not be rejecting requests itself any more. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index f8842ca..791388b 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -22,6 +22,7 @@ #include "memory.h" #include "lock.h" #include "recover.h" +#include "requestqueue.h" #ifdef CONFIG_DLM_DEBUG int dlm_create_debug_file(struct dlm_ls *ls); @@ -684,6 +685,7 @@ static int release_lockspace(struct dlm_ls *ls, int force) * Free structures on any other lists */ + dlm_purge_requestqueue(ls); kfree(ls->ls_recover_args); dlm_clear_free_entries(ls); dlm_clear_members(ls); diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 8bb895f..9dc2f91 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -94,14 +94,6 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) } /* - * Purge directory-related requests that are saved in requestqueue. - * All dir requests from before recovery are invalid now due to the dir - * rebuild and will be resent by the requesting nodes. - */ - - dlm_purge_requestqueue(ls); - - /* * Wait for all nodes to complete directory rebuild. */ @@ -181,6 +173,14 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) dlm_release_root_list(ls); + /* + * Purge directory-related requests that are saved in requestqueue. + * All dir requests from before recovery are invalid now due to the dir + * rebuild and will be resent by the requesting nodes. + */ + + dlm_purge_requestqueue(ls); + dlm_set_recover_status(ls, DLM_RS_DONE); error = dlm_recover_done_wait(ls); if (error) { diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c index 0226d2a..65008d7 100644 --- a/fs/dlm/requestqueue.c +++ b/fs/dlm/requestqueue.c @@ -36,9 +36,6 @@ int dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd) int length = hd->h_length; int rv = 0; - if (dlm_is_removed(ls, nodeid)) - return 0; - e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL); if (!e) { log_print("dlm_add_requestqueue: out of memory\n"); @@ -133,6 +130,10 @@ static int purge_request(struct dlm_ls *ls, struct dlm_message *ms, int nodeid) { uint32_t type = ms->m_type; + /* the ls is being cleaned up and freed by release_lockspace */ + if (!ls->ls_count) + return 1; + if (dlm_is_removed(ls, nodeid)) return 1; -- cgit v0.10.2 From aed3255f2267e2d1d95b9cf7f2995ce24e6c873b Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Tue, 28 Nov 2006 02:53:22 +0900 Subject: [GFS2] fs/gfs2/log.c:log_bmap() fix printk format warning Fix a printk format warning in fs/gfs2/log.c: fs/gfs2/log.c:322: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type 'sector_t' Signed-off-by: Ryusuke Konishi Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 7713d59..291415d 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -326,7 +326,8 @@ static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn) bh_map.b_size = 1 << inode->i_blkbits; error = gfs2_block_map(inode, lbn, 0, &bh_map); if (error || !bh_map.b_blocknr) - printk(KERN_INFO "error=%d, dbn=%llu lbn=%u", error, bh_map.b_blocknr, lbn); + printk(KERN_INFO "error=%d, dbn=%llu lbn=%u", error, + (unsigned long long)bh_map.b_blocknr, lbn); gfs2_assert_withdraw(sdp, !error && bh_map.b_blocknr); return bh_map.b_blocknr; -- cgit v0.10.2 From 1babdb453138f17b8ed3d1d5711089c4e2fa5ace Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 27 Nov 2006 13:18:41 -0600 Subject: [DLM] fix size of STATUS_REPLY message When the not_ready routine sends a "fake" status reply with blank status flags, it needs to use the correct size for a normal STATUS_REPLY by including the size of the would-be config parameters. We also fill in the non-existant config parameters with an invalid lvblen value so it's easier to notice if these invalid paratmers are ever being used. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c index 87b12f7..6ac195c 100644 --- a/fs/dlm/rcom.c +++ b/fs/dlm/rcom.c @@ -370,9 +370,10 @@ static void receive_rcom_lock_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) static int send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in) { struct dlm_rcom *rc; + struct rcom_config *rf; struct dlm_mhandle *mh; char *mb; - int mb_len = sizeof(struct dlm_rcom); + int mb_len = sizeof(struct dlm_rcom) + sizeof(struct rcom_config); mh = dlm_lowcomms_get_buffer(nodeid, mb_len, GFP_KERNEL, &mb); if (!mh) @@ -391,6 +392,9 @@ static int send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in) rc->rc_id = rc_in->rc_id; rc->rc_result = -ESRCH; + rf = (struct rcom_config *) rc->rc_buf; + rf->rf_lvblen = -1; + dlm_rcom_out(rc); dlm_lowcomms_commit_buffer(mh); -- cgit v0.10.2 From 98f176fb32f33795b6d0f83856008b932123ab38 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 27 Nov 2006 13:19:28 -0600 Subject: [DLM] don't accept replies to old recovery messages We often abort a recovery after sending a status request to a remote node. We want to ignore any potential status reply we get from the remote node. If we get one of these unwanted replies, we've often moved on to the next recovery message and incremented the message sequence counter, so the reply will be ignored due to the seq number. In some cases, we've not moved on to the next message so the seq number of the reply we want to ignore is still correct, causing the reply to be accepted. The next recovery message will then mistake this old reply as a new one. To fix this, we add the flag RCOM_WAIT to indicate when we can accept a new reply. We clear this flag if we abort recovery while waiting for a reply. Before the flag is set again (to allow new replies) we know that any old replies will be rejected due to their sequence number. We also initialize the recovery-message sequence number to a random value when a lockspace is first created. This makes it clear when messages are being rejected from an old instance of a lockspace that has since been recreated. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h index 1e5cd67..1ee8195 100644 --- a/fs/dlm/dlm_internal.h +++ b/fs/dlm/dlm_internal.h @@ -471,6 +471,7 @@ struct dlm_ls { char *ls_recover_buf; int ls_recover_nodeid; /* for debugging */ uint64_t ls_rcom_seq; + spinlock_t ls_rcom_spin; struct list_head ls_recover_list; spinlock_t ls_recover_list_lock; int ls_recover_list_count; @@ -488,7 +489,8 @@ struct dlm_ls { #define LSFL_RUNNING 1 #define LSFL_RECOVERY_STOP 2 #define LSFL_RCOM_READY 3 -#define LSFL_UEVENT_WAIT 4 +#define LSFL_RCOM_WAIT 4 +#define LSFL_UEVENT_WAIT 5 /* much of this is just saving user space pointers associated with the lock that we pass back to the user lib with an ast */ diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index 791388b..59012b0 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -479,6 +479,8 @@ static int new_lockspace(char *name, int namelen, void **lockspace, ls->ls_recoverd_task = NULL; mutex_init(&ls->ls_recoverd_active); spin_lock_init(&ls->ls_recover_lock); + spin_lock_init(&ls->ls_rcom_spin); + get_random_bytes(&ls->ls_rcom_seq, sizeof(uint64_t)); ls->ls_recover_status = 0; ls->ls_recover_seq = 0; ls->ls_recover_args = NULL; diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c index 6ac195c..c42f2db 100644 --- a/fs/dlm/rcom.c +++ b/fs/dlm/rcom.c @@ -90,13 +90,28 @@ static int check_config(struct dlm_ls *ls, struct rcom_config *rf, int nodeid) return 0; } +static void allow_sync_reply(struct dlm_ls *ls, uint64_t *new_seq) +{ + spin_lock(&ls->ls_rcom_spin); + *new_seq = ++ls->ls_rcom_seq; + set_bit(LSFL_RCOM_WAIT, &ls->ls_flags); + spin_unlock(&ls->ls_rcom_spin); +} + +static void disallow_sync_reply(struct dlm_ls *ls) +{ + spin_lock(&ls->ls_rcom_spin); + clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags); + clear_bit(LSFL_RCOM_READY, &ls->ls_flags); + spin_unlock(&ls->ls_rcom_spin); +} + int dlm_rcom_status(struct dlm_ls *ls, int nodeid) { struct dlm_rcom *rc; struct dlm_mhandle *mh; int error = 0; - memset(ls->ls_recover_buf, 0, dlm_config.buffer_size); ls->ls_recover_nodeid = nodeid; if (nodeid == dlm_our_nodeid()) { @@ -108,12 +123,14 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid) error = create_rcom(ls, nodeid, DLM_RCOM_STATUS, 0, &rc, &mh); if (error) goto out; - rc->rc_id = ++ls->ls_rcom_seq; + + allow_sync_reply(ls, &rc->rc_id); + memset(ls->ls_recover_buf, 0, dlm_config.buffer_size); send_rcom(ls, mh, rc); error = dlm_wait_function(ls, &rcom_response); - clear_bit(LSFL_RCOM_READY, &ls->ls_flags); + disallow_sync_reply(ls); if (error) goto out; @@ -150,14 +167,20 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) { - if (rc_in->rc_id != ls->ls_rcom_seq) { - log_debug(ls, "reject old reply %d got %llx wanted %llx", - rc_in->rc_type, rc_in->rc_id, ls->ls_rcom_seq); - return; + spin_lock(&ls->ls_rcom_spin); + if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) || + rc_in->rc_id != ls->ls_rcom_seq) { + log_debug(ls, "reject reply %d from %d seq %llx expect %llx", + rc_in->rc_type, rc_in->rc_header.h_nodeid, + rc_in->rc_id, ls->ls_rcom_seq); + goto out; } memcpy(ls->ls_recover_buf, rc_in, rc_in->rc_header.h_length); set_bit(LSFL_RCOM_READY, &ls->ls_flags); + clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags); wake_up(&ls->ls_wait_general); + out: + spin_unlock(&ls->ls_rcom_spin); } static void receive_rcom_status_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) @@ -171,7 +194,6 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len) struct dlm_mhandle *mh; int error = 0, len = sizeof(struct dlm_rcom); - memset(ls->ls_recover_buf, 0, dlm_config.buffer_size); ls->ls_recover_nodeid = nodeid; if (nodeid == dlm_our_nodeid()) { @@ -185,12 +207,14 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len) if (error) goto out; memcpy(rc->rc_buf, last_name, last_len); - rc->rc_id = ++ls->ls_rcom_seq; + + allow_sync_reply(ls, &rc->rc_id); + memset(ls->ls_recover_buf, 0, dlm_config.buffer_size); send_rcom(ls, mh, rc); error = dlm_wait_function(ls, &rcom_response); - clear_bit(LSFL_RCOM_READY, &ls->ls_flags); + disallow_sync_reply(ls); out: return error; } -- cgit v0.10.2 From 0ac230699a0f3f0d15ad4e4ad99446dac5b4a21f Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 28 Nov 2006 22:29:19 -0800 Subject: [GFS2] lock function parameter Fix function parameter typing: fs/gfs2/glock.c:100: warning: function declaration isn't a prototype Signed-off-by: Randy Dunlap Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 3c2ff81..f130f98 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -96,7 +96,7 @@ static inline rwlock_t *gl_lock_addr(unsigned int x) return &gl_hash_locks[x & (GL_HASH_LOCK_SZ-1)]; } #else /* not SMP, so no spinlocks required */ -static inline rwlock_t *gl_lock_addr(x) +static inline rwlock_t *gl_lock_addr(unsigned int x) { return NULL; } -- cgit v0.10.2 From 57adf7eede38d315e0e328c52484d6a596e9a238 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Wed, 29 Nov 2006 09:33:48 -0500 Subject: [DLM] fix format warnings in rcom.c and recoverd.c This fixes the following gcc warnings generated on the architectures where uint64_t != unsigned long long (e.g. ppc64). fs/dlm/rcom.c:154: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'uint64_t' fs/dlm/rcom.c:154: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'uint64_t' fs/dlm/recoverd.c:48: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t' fs/dlm/recoverd.c:202: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t' fs/dlm/recoverd.c:210: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t' Signed-off-by: Ryusuke Konishi Signed-off-by: Patrick Caulfield Signed-off-by: Steven Whitehouse diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c index c42f2db..4cc31be 100644 --- a/fs/dlm/rcom.c +++ b/fs/dlm/rcom.c @@ -172,7 +172,8 @@ static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) rc_in->rc_id != ls->ls_rcom_seq) { log_debug(ls, "reject reply %d from %d seq %llx expect %llx", rc_in->rc_type, rc_in->rc_header.h_nodeid, - rc_in->rc_id, ls->ls_rcom_seq); + (unsigned long long)rc_in->rc_id, + (unsigned long long)ls->ls_rcom_seq); goto out; } memcpy(ls->ls_recover_buf, rc_in, rc_in->rc_header.h_length); diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 9dc2f91..650536aa 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -45,7 +45,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) unsigned long start; int error, neg = 0; - log_debug(ls, "recover %llx", rv->seq); + log_debug(ls, "recover %llx", (unsigned long long)rv->seq); mutex_lock(&ls->ls_recoverd_active); @@ -212,7 +212,8 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) dlm_astd_wake(); - log_debug(ls, "recover %llx done: %u ms", rv->seq, + log_debug(ls, "recover %llx done: %u ms", + (unsigned long long)rv->seq, jiffies_to_msecs(jiffies - start)); mutex_unlock(&ls->ls_recoverd_active); @@ -220,7 +221,8 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) fail: dlm_release_root_list(ls); - log_debug(ls, "recover %llx error %d", rv->seq, error); + log_debug(ls, "recover %llx error %d", + (unsigned long long)rv->seq, error); mutex_unlock(&ls->ls_recoverd_active); return error; } -- cgit v0.10.2 From 77386e1f662f104680da7885d32e068e4b11b882 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 29 Nov 2006 10:41:49 -0500 Subject: [GFS2] Remove gfs2_check_acl() As pointed out by Adrian Bunk, the gfs2_check_acl() function is no longer used. This patch removes it and renamed gfs2_check_acl_locked() to gfs2_check_acl() since we only need one variant of that function now. Signed-off-by: Steven Whitehouse Cc: Adrian Bunk diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 3908992..6e80844 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -145,14 +145,14 @@ out: } /** - * gfs2_check_acl_locked - Check an ACL to see if we're allowed to do something + * gfs2_check_acl - Check an ACL to see if we're allowed to do something * @inode: the file we want to do something to * @mask: what we want to do * * Returns: errno */ -int gfs2_check_acl_locked(struct inode *inode, int mask) +int gfs2_check_acl(struct inode *inode, int mask) { struct posix_acl *acl = NULL; int error; @@ -170,21 +170,6 @@ int gfs2_check_acl_locked(struct inode *inode, int mask) return -EAGAIN; } -int gfs2_check_acl(struct inode *inode, int mask) -{ - struct gfs2_inode *ip = GFS2_I(inode); - struct gfs2_holder i_gh; - int error; - - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); - if (!error) { - error = gfs2_check_acl_locked(inode, mask); - gfs2_glock_dq_uninit(&i_gh); - } - - return error; -} - static int munge_mode(struct gfs2_inode *ip, mode_t mode) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); diff --git a/fs/gfs2/acl.h b/fs/gfs2/acl.h index 05c294f..6751930 100644 --- a/fs/gfs2/acl.h +++ b/fs/gfs2/acl.h @@ -31,7 +31,6 @@ int gfs2_acl_validate_set(struct gfs2_inode *ip, int access, struct gfs2_ea_request *er, int *remove, mode_t *mode); int gfs2_acl_validate_remove(struct gfs2_inode *ip, int access); -int gfs2_check_acl_locked(struct inode *inode, int mask); int gfs2_check_acl(struct inode *inode, int mask); int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip); int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index fbe38c1..636dda4 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -856,7 +856,7 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) unlock = 1; } - error = generic_permission(inode, mask, gfs2_check_acl_locked); + error = generic_permission(inode, mask, gfs2_check_acl); if (unlock) gfs2_glock_dq_uninit(&i_gh); -- cgit v0.10.2 From 0da3585e1ef650d3224b4d6f9799558d1d99fa1e Mon Sep 17 00:00:00 2001 From: Srinivasa Ds Date: Thu, 30 Nov 2006 15:04:55 +0530 Subject: [GFS2] Mount problem with the GFS2 code While mounting the gfs2 filesystem,our test team had a problem and we got this error message. ======================================================= GFS2: fsid=: Trying to join cluster "lock_nolock", "dasde1" GFS2: fsid=dasde1.0: Joined cluster. Now mounting FS... GFS2: not a GFS2 filesystem GFS2: fsid=dasde1.0: can't read superblock: -22 ========================================================================== On debugging further we found that problem is while reading the super block(gfs2_read_super) and comparing the magic number in it. When I replace the submit_bio() call(present in gfs2_read_super) with the sb_getblk() and ll_rw_block(), mount operation succeded. On further analysis we found that before calling submit_bio(), bio->bi_sector was set to "sector" variable. This "sector" variable has the same value of bh->b_blocknr(block number). Hence there is a need to multiply this valuwith (blocksize >> 9)(9 because,sector size 2^9,samething happens in ll_rw_block also, before calling submit_bio()). So I have developed the patch which solves this problem. Please let me know your comments. ================================================================ Signed-off-by: Srinivasa DS Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 1408c5f..3b22727 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -199,7 +199,7 @@ struct page *gfs2_read_super(struct super_block *sb, sector_t sector) return NULL; } - bio->bi_sector = sector; + bio->bi_sector = sector * (sb->s_blocksize >> 9); bio->bi_bdev = sb->s_bdev; bio_add_page(bio, page, PAGE_SIZE, 0); -- cgit v0.10.2 From aac1a3c77a46c2d06f297641760dd740ac2a84af Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 30 Nov 2006 10:02:19 -0500 Subject: [GFS2] Add a comment about reading the super block The comment explains why we use the bio functions to read the super block. Signed-off-by: Steven Whitehouse Cc: Andrew Morton Cc: Srinivasa Ds diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 3b22727..43a24f2 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -180,6 +180,24 @@ static int end_bio_io_page(struct bio *bio, unsigned int bytes_done, int error) return 0; } +/** + * gfs2_read_super - Read the gfs2 super block from disk + * @sb: The VFS super block + * @sector: The location of the super block + * + * This uses the bio functions to read the super block from disk + * because we want to be 100% sure that we never read cached data. + * A super block is read twice only during each GFS2 mount and is + * never written to by the filesystem. The first time its read no + * locks are held, and the only details which are looked at are those + * relating to the locking protocol. Once locking is up and working, + * the sb is read again under the lock to establish the location of + * the master directory (contains pointers to journals etc) and the + * root directory. + * + * Returns: A page containing the sb or NULL + */ + struct page *gfs2_read_super(struct super_block *sb, sector_t sector) { struct page *page; -- cgit v0.10.2 From 33c3de32872ef3c075e4dac04c0de8f86ac39f6f Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 30 Nov 2006 10:14:32 -0500 Subject: [GFS2] Don't flush everything on fdatasync The gfs2_fsync() function was doing a journal flush on each and every call. While this is correct, its also a lot of overhead. This patch means that on fdatasync flushes we rely on the VFS to flush the data for us and we don't do a journal flush unless we really need to. We have to do a journal flush for stuffed files though because they have the data and the inode metadata in the same block. Journaled files also need a journal flush too of course. Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index c2be216..7bd971b 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include "gfs2.h" @@ -503,16 +504,39 @@ static int gfs2_close(struct inode *inode, struct file *file) * @file: the file that points to the dentry (we ignore this) * @dentry: the dentry that points to the inode to sync * + * The VFS will flush "normal" data for us. We only need to worry + * about metadata here. For journaled data, we just do a log flush + * as we can't avoid it. Otherwise we can just bale out if datasync + * is set. For stuffed inodes we must flush the log in order to + * ensure that all data is on disk. + * * Returns: errno */ static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync) { - struct gfs2_inode *ip = GFS2_I(dentry->d_inode); + struct inode *inode = dentry->d_inode; + int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC); + int ret = 0; + struct writeback_control wbc = { + .sync_mode = WB_SYNC_ALL, + .nr_to_write = 0, + }; + + if (gfs2_is_jdata(GFS2_I(inode))) { + gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl); + return 0; + } - gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl); + if (sync_state != 0) { + if (!datasync) + ret = sync_inode(inode, &wbc); - return 0; + if (gfs2_is_stuffed(GFS2_I(inode))) + gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl); + } + + return ret; } /** -- cgit v0.10.2 From 887bc5d00c02b32763845247024e8db5243ef857 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 5 Dec 2006 13:34:17 -0500 Subject: [GFS2] Fix indent in recovery.c As per comments from Andrew Morton and Jan Engelhardt, this fixes the indent and removes the "static" from a variable declaration since its not needed in this case (now allocated on the stack of the function in question). Signed-off-by: Steven Whitehouse Cc: Jan Engelhardt Cc: Andrew Morton diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 4acf238..d0c806b 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -136,7 +136,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk, { struct buffer_head *bh; struct gfs2_log_header_host lh; -static const u32 nothing = 0; + const u32 nothing = 0; u32 hash; int error; -- cgit v0.10.2 From 34126f9f41901ca9d7d0031c2b11fc0d6c07b72d Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 7 Dec 2006 09:13:14 -0500 Subject: [GFS2] Change gfs2_fsync() to use write_inode_now() This is a bit better than the previous version of gfs2_fsync() although it would be better still if we were able to call a function which only wrote the inode & metadata. Its no big deal though that this will potentially write the data as well since the VFS has already done that before calling gfs2_fsync(). I've also added a comment to explain whats going on here. Signed-off-by: Steven Whitehouse Cc: Andrew Morton diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 7bd971b..b3f1e03 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -510,6 +510,11 @@ static int gfs2_close(struct inode *inode, struct file *file) * is set. For stuffed inodes we must flush the log in order to * ensure that all data is on disk. * + * The call to write_inode_now() is there to write back metadata and + * the inode itself. It does also try and write the data, but thats + * (hopefully) a no-op due to the VFS having already called filemap_fdatawrite() + * for us. + * * Returns: errno */ @@ -518,10 +523,6 @@ static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync) struct inode *inode = dentry->d_inode; int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC); int ret = 0; - struct writeback_control wbc = { - .sync_mode = WB_SYNC_ALL, - .nr_to_write = 0, - }; if (gfs2_is_jdata(GFS2_I(inode))) { gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl); @@ -530,7 +531,7 @@ static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync) if (sync_state != 0) { if (!datasync) - ret = sync_inode(inode, &wbc); + ret = write_inode_now(inode, 0); if (gfs2_is_stuffed(GFS2_I(inode))) gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl); -- cgit v0.10.2 From ac33d0710595579e3cfca42dde2257eb0b123f6d Mon Sep 17 00:00:00 2001 From: Patrick Caulfield Date: Wed, 6 Dec 2006 15:10:37 +0000 Subject: [DLM] Clean up lowcomms This fixes up most of the things pointed out by akpm and Pavel Machek with comments below indicating why some things have been left: Andrew Morton wrote: > >> +static struct nodeinfo *nodeid2nodeinfo(int nodeid, gfp_t alloc) >> +{ >> + struct nodeinfo *ni; >> + int r; >> + int n; >> + >> + down_read(&nodeinfo_lock); > > Given that this function can sleep, I wonder if `alloc' is useful. > > I see lots of callers passing in a literal "0" for `alloc'. That's in fact > a secret (GFP_ATOMIC & ~__GFP_HIGH). I doubt if that's what you really > meant. Particularly as the code could at least have used __GFP_WAIT (aka > GFP_NOIO) which is much, much more reliable than "0". In fact "0" is the > least reliable mode possible. > > IOW, this is all bollixed up. When 0 is passed into nodeid2nodeinfo the function does not try to allocate a new structure at all. it's an indication that the caller only wants the nodeinfo struct for that nodeid if there actually is one in existance. I've tidied the function itself so it's more obvious, (and tidier!) >> +/* Data received from remote end */ >> +static int receive_from_sock(void) >> +{ >> + int ret = 0; >> + struct msghdr msg; >> + struct kvec iov[2]; >> + unsigned len; >> + int r; >> + struct sctp_sndrcvinfo *sinfo; >> + struct cmsghdr *cmsg; >> + struct nodeinfo *ni; >> + >> + /* These two are marginally too big for stack allocation, but this >> + * function is (currently) only called by dlm_recvd so static should be >> + * OK. >> + */ >> + static struct sockaddr_storage msgname; >> + static char incmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; > > whoa. This is globally singly-threaded code?? Yes. it is only ever run in the context of dlm_recvd. >> >> +static void initiate_association(int nodeid) >> +{ >> + struct sockaddr_storage rem_addr; >> + static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; > > Another static buffer to worry about. Globally singly-threaded code? Yes. Only ever called by dlm_sendd. >> + >> +/* Send a message */ >> +static int send_to_sock(struct nodeinfo *ni) >> +{ >> + int ret = 0; >> + struct writequeue_entry *e; >> + int len, offset; >> + struct msghdr outmsg; >> + static char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; > > Singly-threaded? Yep. >> >> +static void dealloc_nodeinfo(void) >> +{ >> + int i; >> + >> + for (i=1; i<=max_nodeid; i++) { >> + struct nodeinfo *ni = nodeid2nodeinfo(i, 0); >> + if (ni) { >> + idr_remove(&nodeinfo_idr, i); > > Didn't that need locking? Not. it's only ever called at DLM shutdown after all the other threads have been stopped. >> >> +static int write_list_empty(void) >> +{ >> + int status; >> + >> + spin_lock_bh(&write_nodes_lock); >> + status = list_empty(&write_nodes); >> + spin_unlock_bh(&write_nodes_lock); >> + >> + return status; >> +} > > This function's return value is meaningless. As soon as the lock gets > dropped, the return value can get out of sync with reality. > > Looking at the caller, this _might_ happen to be OK, but it's a nasty and > dangerous thing. Really the locking should be moved into the caller. It's just an optimisation to allow the caller to schedule if there is no work to do. if something arrives immediately afterwards then it will get picked up when the process re-awakes (and it will be woken by that arrival). The 'accepting' atomic has gone completely. as Andrew pointed out it didn't really achieve much anyway. I suspect it was a plaster over some other startup or shutdown bug to be honest. Signed-off-by: Patrick Caulfield Signed-off-by: Steven Whitehouse Cc: Andrew Morton Cc: Pavel Machek diff --git a/fs/dlm/lowcomms-sctp.c b/fs/dlm/lowcomms-sctp.c index 6da6b14..fe158d7 100644 --- a/fs/dlm/lowcomms-sctp.c +++ b/fs/dlm/lowcomms-sctp.c @@ -2,7 +2,7 @@ ******************************************************************************* ** ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. -** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. +** Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. ** ** This copyrighted material is made available to anyone wishing to use, ** modify, copy, or redistribute it subject to the terms and conditions @@ -75,13 +75,13 @@ struct nodeinfo { }; static DEFINE_IDR(nodeinfo_idr); -static struct rw_semaphore nodeinfo_lock; -static int max_nodeid; +static DECLARE_RWSEM(nodeinfo_lock); +static int max_nodeid; struct cbuf { - unsigned base; - unsigned len; - unsigned mask; + unsigned int base; + unsigned int len; + unsigned int mask; }; /* Just the one of these, now. But this struct keeps @@ -90,9 +90,9 @@ struct cbuf { #define CF_READ_PENDING 1 struct connection { - struct socket *sock; + struct socket *sock; unsigned long flags; - struct page *rx_page; + struct page *rx_page; atomic_t waiting_requests; struct cbuf cb; int eagain_flag; @@ -102,36 +102,40 @@ struct connection { struct writequeue_entry { struct list_head list; - struct page *page; + struct page *page; int offset; int len; int end; int users; - struct nodeinfo *ni; + struct nodeinfo *ni; }; -#define CBUF_ADD(cb, n) do { (cb)->len += n; } while(0) -#define CBUF_EMPTY(cb) ((cb)->len == 0) -#define CBUF_MAY_ADD(cb, n) (((cb)->len + (n)) < ((cb)->mask + 1)) -#define CBUF_DATA(cb) (((cb)->base + (cb)->len) & (cb)->mask) +static void cbuf_add(struct cbuf *cb, int n) +{ + cb->len += n; +} -#define CBUF_INIT(cb, size) \ -do { \ - (cb)->base = (cb)->len = 0; \ - (cb)->mask = ((size)-1); \ -} while(0) +static int cbuf_data(struct cbuf *cb) +{ + return ((cb->base + cb->len) & cb->mask); +} -#define CBUF_EAT(cb, n) \ -do { \ - (cb)->len -= (n); \ - (cb)->base += (n); \ - (cb)->base &= (cb)->mask; \ -} while(0) +static void cbuf_init(struct cbuf *cb, int size) +{ + cb->base = cb->len = 0; + cb->mask = size-1; +} +static void cbuf_eat(struct cbuf *cb, int n) +{ + cb->len -= n; + cb->base += n; + cb->base &= cb->mask; +} /* List of nodes which have writes pending */ -static struct list_head write_nodes; -static spinlock_t write_nodes_lock; +static LIST_HEAD(write_nodes); +static DEFINE_SPINLOCK(write_nodes_lock); /* Maximum number of incoming messages to process before * doing a schedule() @@ -141,8 +145,7 @@ static spinlock_t write_nodes_lock; /* Manage daemons */ static struct task_struct *recv_task; static struct task_struct *send_task; -static wait_queue_head_t lowcomms_recv_wait; -static atomic_t accepting; +static DECLARE_WAIT_QUEUE_HEAD(lowcomms_recv_wait); /* The SCTP connection */ static struct connection sctp_con; @@ -161,11 +164,11 @@ static int nodeid_to_addr(int nodeid, struct sockaddr *retaddr) return error; if (dlm_local_addr[0]->ss_family == AF_INET) { - struct sockaddr_in *in4 = (struct sockaddr_in *) &addr; + struct sockaddr_in *in4 = (struct sockaddr_in *) &addr; struct sockaddr_in *ret4 = (struct sockaddr_in *) retaddr; ret4->sin_addr.s_addr = in4->sin_addr.s_addr; } else { - struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &addr; + struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &addr; struct sockaddr_in6 *ret6 = (struct sockaddr_in6 *) retaddr; memcpy(&ret6->sin6_addr, &in6->sin6_addr, sizeof(in6->sin6_addr)); @@ -174,6 +177,8 @@ static int nodeid_to_addr(int nodeid, struct sockaddr *retaddr) return 0; } +/* If alloc is 0 here we will not attempt to allocate a new + nodeinfo struct */ static struct nodeinfo *nodeid2nodeinfo(int nodeid, gfp_t alloc) { struct nodeinfo *ni; @@ -184,44 +189,45 @@ static struct nodeinfo *nodeid2nodeinfo(int nodeid, gfp_t alloc) ni = idr_find(&nodeinfo_idr, nodeid); up_read(&nodeinfo_lock); - if (!ni && alloc) { - down_write(&nodeinfo_lock); + if (ni || !alloc) + return ni; - ni = idr_find(&nodeinfo_idr, nodeid); - if (ni) - goto out_up; + down_write(&nodeinfo_lock); - r = idr_pre_get(&nodeinfo_idr, alloc); - if (!r) - goto out_up; + ni = idr_find(&nodeinfo_idr, nodeid); + if (ni) + goto out_up; - ni = kmalloc(sizeof(struct nodeinfo), alloc); - if (!ni) - goto out_up; + r = idr_pre_get(&nodeinfo_idr, alloc); + if (!r) + goto out_up; - r = idr_get_new_above(&nodeinfo_idr, ni, nodeid, &n); - if (r) { - kfree(ni); - ni = NULL; - goto out_up; - } - if (n != nodeid) { - idr_remove(&nodeinfo_idr, n); - kfree(ni); - ni = NULL; - goto out_up; - } - memset(ni, 0, sizeof(struct nodeinfo)); - spin_lock_init(&ni->lock); - INIT_LIST_HEAD(&ni->writequeue); - spin_lock_init(&ni->writequeue_lock); - ni->nodeid = nodeid; - - if (nodeid > max_nodeid) - max_nodeid = nodeid; - out_up: - up_write(&nodeinfo_lock); + ni = kmalloc(sizeof(struct nodeinfo), alloc); + if (!ni) + goto out_up; + + r = idr_get_new_above(&nodeinfo_idr, ni, nodeid, &n); + if (r) { + kfree(ni); + ni = NULL; + goto out_up; } + if (n != nodeid) { + idr_remove(&nodeinfo_idr, n); + kfree(ni); + ni = NULL; + goto out_up; + } + memset(ni, 0, sizeof(struct nodeinfo)); + spin_lock_init(&ni->lock); + INIT_LIST_HEAD(&ni->writequeue); + spin_lock_init(&ni->writequeue_lock); + ni->nodeid = nodeid; + + if (nodeid > max_nodeid) + max_nodeid = nodeid; +out_up: + up_write(&nodeinfo_lock); return ni; } @@ -279,13 +285,13 @@ static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, in4_addr->sin_port = cpu_to_be16(port); memset(&in4_addr->sin_zero, 0, sizeof(in4_addr->sin_zero)); memset(in4_addr+1, 0, sizeof(struct sockaddr_storage) - - sizeof(struct sockaddr_in)); + sizeof(struct sockaddr_in)); *addr_len = sizeof(struct sockaddr_in); } else { struct sockaddr_in6 *in6_addr = (struct sockaddr_in6 *)saddr; in6_addr->sin6_port = cpu_to_be16(port); memset(in6_addr+1, 0, sizeof(struct sockaddr_storage) - - sizeof(struct sockaddr_in6)); + sizeof(struct sockaddr_in6)); *addr_len = sizeof(struct sockaddr_in6); } } @@ -324,7 +330,7 @@ static void send_shutdown(sctp_assoc_t associd) cmsg->cmsg_type = SCTP_SNDRCV; cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); outmessage.msg_controllen = cmsg->cmsg_len; - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + sinfo = CMSG_DATA(cmsg); memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); sinfo->sinfo_flags |= MSG_EOF; @@ -387,7 +393,7 @@ static void process_sctp_notification(struct msghdr *msg, char *buf) if ((int)sn->sn_assoc_change.sac_assoc_id <= 0) { log_print("COMM_UP for invalid assoc ID %d", - (int)sn->sn_assoc_change.sac_assoc_id); + (int)sn->sn_assoc_change.sac_assoc_id); init_failed(); return; } @@ -398,15 +404,18 @@ static void process_sctp_notification(struct msghdr *msg, char *buf) fs = get_fs(); set_fs(get_ds()); ret = sctp_con.sock->ops->getsockopt(sctp_con.sock, - IPPROTO_SCTP, SCTP_PRIMARY_ADDR, - (char*)&prim, &prim_len); + IPPROTO_SCTP, + SCTP_PRIMARY_ADDR, + (char*)&prim, + &prim_len); set_fs(fs); if (ret < 0) { struct nodeinfo *ni; log_print("getsockopt/sctp_primary_addr on " "new assoc %d failed : %d", - (int)sn->sn_assoc_change.sac_assoc_id, ret); + (int)sn->sn_assoc_change.sac_assoc_id, + ret); /* Retry INIT later */ ni = assoc2nodeinfo(sn->sn_assoc_change.sac_assoc_id); @@ -426,12 +435,10 @@ static void process_sctp_notification(struct msghdr *msg, char *buf) return; /* Save the assoc ID */ - spin_lock(&ni->lock); ni->assoc_id = sn->sn_assoc_change.sac_assoc_id; - spin_unlock(&ni->lock); log_print("got new/restarted association %d nodeid %d", - (int)sn->sn_assoc_change.sac_assoc_id, nodeid); + (int)sn->sn_assoc_change.sac_assoc_id, nodeid); /* Send any pending writes */ clear_bit(NI_INIT_PENDING, &ni->flags); @@ -507,13 +514,12 @@ static int receive_from_sock(void) sctp_con.rx_page = alloc_page(GFP_ATOMIC); if (sctp_con.rx_page == NULL) goto out_resched; - CBUF_INIT(&sctp_con.cb, PAGE_CACHE_SIZE); + cbuf_init(&sctp_con.cb, PAGE_CACHE_SIZE); } memset(&incmsg, 0, sizeof(incmsg)); memset(&msgname, 0, sizeof(msgname)); - memset(incmsg, 0, sizeof(incmsg)); msg.msg_name = &msgname; msg.msg_namelen = sizeof(msgname); msg.msg_flags = 0; @@ -532,17 +538,17 @@ static int receive_from_sock(void) * iov[0] is the bit of the circular buffer between the current end * point (cb.base + cb.len) and the end of the buffer. */ - iov[0].iov_len = sctp_con.cb.base - CBUF_DATA(&sctp_con.cb); + iov[0].iov_len = sctp_con.cb.base - cbuf_data(&sctp_con.cb); iov[0].iov_base = page_address(sctp_con.rx_page) + - CBUF_DATA(&sctp_con.cb); + cbuf_data(&sctp_con.cb); iov[1].iov_len = 0; /* * iov[1] is the bit of the circular buffer between the start of the * buffer and the start of the currently used section (cb.base) */ - if (CBUF_DATA(&sctp_con.cb) >= sctp_con.cb.base) { - iov[0].iov_len = PAGE_CACHE_SIZE - CBUF_DATA(&sctp_con.cb); + if (cbuf_data(&sctp_con.cb) >= sctp_con.cb.base) { + iov[0].iov_len = PAGE_CACHE_SIZE - cbuf_data(&sctp_con.cb); iov[1].iov_len = sctp_con.cb.base; iov[1].iov_base = page_address(sctp_con.rx_page); msg.msg_iovlen = 2; @@ -557,7 +563,7 @@ static int receive_from_sock(void) msg.msg_control = incmsg; msg.msg_controllen = sizeof(incmsg); cmsg = CMSG_FIRSTHDR(&msg); - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + sinfo = CMSG_DATA(cmsg); if (msg.msg_flags & MSG_NOTIFICATION) { process_sctp_notification(&msg, page_address(sctp_con.rx_page)); @@ -583,29 +589,29 @@ static int receive_from_sock(void) if (r == 1) return 0; - CBUF_ADD(&sctp_con.cb, ret); + cbuf_add(&sctp_con.cb, ret); ret = dlm_process_incoming_buffer(cpu_to_le32(sinfo->sinfo_ppid), page_address(sctp_con.rx_page), sctp_con.cb.base, sctp_con.cb.len, PAGE_CACHE_SIZE); if (ret < 0) goto out_close; - CBUF_EAT(&sctp_con.cb, ret); + cbuf_eat(&sctp_con.cb, ret); - out: +out: ret = 0; goto out_ret; - out_resched: +out_resched: lowcomms_data_ready(sctp_con.sock->sk, 0); ret = 0; - schedule(); + cond_resched(); goto out_ret; - out_close: +out_close: if (ret != -EAGAIN) log_print("error reading from sctp socket: %d", ret); - out_ret: +out_ret: return ret; } @@ -619,10 +625,12 @@ static int add_bind_addr(struct sockaddr_storage *addr, int addr_len, int num) set_fs(get_ds()); if (num == 1) result = sctp_con.sock->ops->bind(sctp_con.sock, - (struct sockaddr *) addr, addr_len); + (struct sockaddr *) addr, + addr_len); else result = sctp_con.sock->ops->setsockopt(sctp_con.sock, SOL_SCTP, - SCTP_SOCKOPT_BINDX_ADD, (char *)addr, addr_len); + SCTP_SOCKOPT_BINDX_ADD, + (char *)addr, addr_len); set_fs(fs); if (result < 0) @@ -719,10 +727,10 @@ static int init_sock(void) return 0; - create_delsock: +create_delsock: sock_release(sock); sctp_con.sock = NULL; - out: +out: return result; } @@ -756,16 +764,13 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc) int users = 0; struct nodeinfo *ni; - if (!atomic_read(&accepting)) - return NULL; - ni = nodeid2nodeinfo(nodeid, allocation); if (!ni) return NULL; spin_lock(&ni->writequeue_lock); e = list_entry(ni->writequeue.prev, struct writequeue_entry, list); - if (((struct list_head *) e == &ni->writequeue) || + if ((&e->list == &ni->writequeue) || (PAGE_CACHE_SIZE - e->end < len)) { e = NULL; } else { @@ -776,7 +781,7 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc) spin_unlock(&ni->writequeue_lock); if (e) { - got_one: + got_one: if (users == 0) kmap(e->page); *ppc = page_address(e->page) + offset; @@ -803,9 +808,6 @@ void dlm_lowcomms_commit_buffer(void *arg) int users; struct nodeinfo *ni = e->ni; - if (!atomic_read(&accepting)) - return; - spin_lock(&ni->writequeue_lock); users = --e->users; if (users) @@ -822,7 +824,7 @@ void dlm_lowcomms_commit_buffer(void *arg) } return; - out: +out: spin_unlock(&ni->writequeue_lock); return; } @@ -878,7 +880,7 @@ static void initiate_association(int nodeid) cmsg->cmsg_level = IPPROTO_SCTP; cmsg->cmsg_type = SCTP_SNDRCV; cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + sinfo = CMSG_DATA(cmsg); memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); sinfo->sinfo_ppid = cpu_to_le32(dlm_local_nodeid); @@ -892,7 +894,7 @@ static void initiate_association(int nodeid) } /* Send a message */ -static int send_to_sock(struct nodeinfo *ni) +static void send_to_sock(struct nodeinfo *ni) { int ret = 0; struct writequeue_entry *e; @@ -903,13 +905,13 @@ static int send_to_sock(struct nodeinfo *ni) struct sctp_sndrcvinfo *sinfo; struct kvec iov; - /* See if we need to init an association before we start + /* See if we need to init an association before we start sending precious messages */ spin_lock(&ni->lock); if (!ni->assoc_id && !test_and_set_bit(NI_INIT_PENDING, &ni->flags)) { spin_unlock(&ni->lock); initiate_association(ni->nodeid); - return 0; + return; } spin_unlock(&ni->lock); @@ -923,7 +925,7 @@ static int send_to_sock(struct nodeinfo *ni) cmsg->cmsg_level = IPPROTO_SCTP; cmsg->cmsg_type = SCTP_SNDRCV; cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); - sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); + sinfo = CMSG_DATA(cmsg); memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo)); sinfo->sinfo_ppid = cpu_to_le32(dlm_local_nodeid); sinfo->sinfo_assoc_id = ni->assoc_id; @@ -955,7 +957,7 @@ static int send_to_sock(struct nodeinfo *ni) goto send_error; } else { /* Don't starve people filling buffers */ - schedule(); + cond_resched(); } spin_lock(&ni->writequeue_lock); @@ -964,15 +966,16 @@ static int send_to_sock(struct nodeinfo *ni) if (e->len == 0 && e->users == 0) { list_del(&e->list); + kunmap(e->page); free_entry(e); continue; } } spin_unlock(&ni->writequeue_lock); - out: - return ret; +out: + return; - send_error: +send_error: log_print("Error sending to node %d %d", ni->nodeid, ret); spin_lock(&ni->lock); if (!test_and_set_bit(NI_INIT_PENDING, &ni->flags)) { @@ -982,7 +985,7 @@ static int send_to_sock(struct nodeinfo *ni) } else spin_unlock(&ni->lock); - return ret; + return; } /* Try to send any messages that are pending */ @@ -994,7 +997,7 @@ static void process_output_queue(void) spin_lock_bh(&write_nodes_lock); list_for_each_safe(list, temp, &write_nodes) { struct nodeinfo *ni = - list_entry(list, struct nodeinfo, write_list); + list_entry(list, struct nodeinfo, write_list); clear_bit(NI_WRITE_PENDING, &ni->flags); list_del(&ni->write_list); @@ -1106,7 +1109,7 @@ static int dlm_recvd(void *data) set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&lowcomms_recv_wait, &wait); if (!test_bit(CF_READ_PENDING, &sctp_con.flags)) - schedule(); + cond_resched(); remove_wait_queue(&lowcomms_recv_wait, &wait); set_current_state(TASK_RUNNING); @@ -1118,12 +1121,12 @@ static int dlm_recvd(void *data) /* Don't starve out everyone else */ if (++count >= MAX_RX_MSG_COUNT) { - schedule(); + cond_resched(); count = 0; } } while (!kthread_should_stop() && ret >=0); } - schedule(); + cond_resched(); } return 0; @@ -1138,7 +1141,7 @@ static int dlm_sendd(void *data) while (!kthread_should_stop()) { set_current_state(TASK_INTERRUPTIBLE); if (write_list_empty()) - schedule(); + cond_resched(); set_current_state(TASK_RUNNING); if (sctp_con.eagain_flag) { @@ -1166,7 +1169,7 @@ static int daemons_start(void) p = kthread_run(dlm_recvd, NULL, "dlm_recvd"); error = IS_ERR(p); - if (error) { + if (error) { log_print("can't start dlm_recvd %d", error); return error; } @@ -1174,7 +1177,7 @@ static int daemons_start(void) p = kthread_run(dlm_sendd, NULL, "dlm_sendd"); error = IS_ERR(p); - if (error) { + if (error) { log_print("can't start dlm_sendd %d", error); kthread_stop(recv_task); return error; @@ -1197,43 +1200,28 @@ int dlm_lowcomms_start(void) error = daemons_start(); if (error) goto fail_sock; - atomic_set(&accepting, 1); return 0; - fail_sock: +fail_sock: close_connection(); return error; } -/* Set all the activity flags to prevent any socket activity. */ - void dlm_lowcomms_stop(void) { - atomic_set(&accepting, 0); + int i; + sctp_con.flags = 0x7; daemons_stop(); clean_writequeues(); close_connection(); dealloc_nodeinfo(); max_nodeid = 0; -} -int dlm_lowcomms_init(void) -{ - init_waitqueue_head(&lowcomms_recv_wait); - spin_lock_init(&write_nodes_lock); - INIT_LIST_HEAD(&write_nodes); - init_rwsem(&nodeinfo_lock); - return 0; -} - -void dlm_lowcomms_exit(void) -{ - int i; + dlm_local_count = 0; + dlm_local_nodeid = 0; for (i = 0; i < dlm_local_count; i++) kfree(dlm_local_addr[i]); - dlm_local_count = 0; - dlm_local_nodeid = 0; } diff --git a/fs/dlm/lowcomms-tcp.c b/fs/dlm/lowcomms-tcp.c index 7289e59..8f2791f 100644 --- a/fs/dlm/lowcomms-tcp.c +++ b/fs/dlm/lowcomms-tcp.c @@ -54,44 +54,59 @@ #include "config.h" struct cbuf { - unsigned base; - unsigned len; - unsigned mask; + unsigned int base; + unsigned int len; + unsigned int mask; }; -#ifndef FALSE -#define FALSE 0 -#define TRUE 1 -#endif #define NODE_INCREMENT 32 +static void cbuf_add(struct cbuf *cb, int n) +{ + cb->len += n; +} -#define CBUF_INIT(cb, size) do { (cb)->base = (cb)->len = 0; (cb)->mask = ((size)-1); } while(0) -#define CBUF_ADD(cb, n) do { (cb)->len += n; } while(0) -#define CBUF_EMPTY(cb) ((cb)->len == 0) -#define CBUF_MAY_ADD(cb, n) (((cb)->len + (n)) < ((cb)->mask + 1)) -#define CBUF_EAT(cb, n) do { (cb)->len -= (n); \ - (cb)->base += (n); (cb)->base &= (cb)->mask; } while(0) -#define CBUF_DATA(cb) (((cb)->base + (cb)->len) & (cb)->mask) +static int cbuf_data(struct cbuf *cb) +{ + return ((cb->base + cb->len) & cb->mask); +} + +static void cbuf_init(struct cbuf *cb, int size) +{ + cb->base = cb->len = 0; + cb->mask = size-1; +} + +static void cbuf_eat(struct cbuf *cb, int n) +{ + cb->len -= n; + cb->base += n; + cb->base &= cb->mask; +} + +static bool cbuf_empty(struct cbuf *cb) +{ + return cb->len == 0; +} /* Maximum number of incoming messages to process before - doing a schedule() + doing a cond_resched() */ #define MAX_RX_MSG_COUNT 25 struct connection { struct socket *sock; /* NULL if not connected */ uint32_t nodeid; /* So we know who we are in the list */ - struct rw_semaphore sock_sem; /* Stop connect races */ - struct list_head read_list; /* On this list when ready for reading */ - struct list_head write_list; /* On this list when ready for writing */ - struct list_head state_list; /* On this list when ready to connect */ + struct rw_semaphore sock_sem; /* Stop connect races */ + struct list_head read_list; /* On this list when ready for reading */ + struct list_head write_list; /* On this list when ready for writing */ + struct list_head state_list; /* On this list when ready to connect */ unsigned long flags; /* bit 1,2 = We are on the read/write lists */ #define CF_READ_PENDING 1 #define CF_WRITE_PENDING 2 #define CF_CONNECT_PENDING 3 #define CF_IS_OTHERCON 4 - struct list_head writequeue; /* List of outgoing writequeue_entries */ - struct list_head listenlist; /* List of allocated listening sockets */ + struct list_head writequeue; /* List of outgoing writequeue_entries */ + struct list_head listenlist; /* List of allocated listening sockets */ spinlock_t writequeue_lock; int (*rx_action) (struct connection *); /* What to do when active */ struct page *rx_page; @@ -121,28 +136,27 @@ static struct task_struct *recv_task; static struct task_struct *send_task; static wait_queue_t lowcomms_send_waitq_head; -static wait_queue_head_t lowcomms_send_waitq; +static DECLARE_WAIT_QUEUE_HEAD(lowcomms_send_waitq); static wait_queue_t lowcomms_recv_waitq_head; -static wait_queue_head_t lowcomms_recv_waitq; +static DECLARE_WAIT_QUEUE_HEAD(lowcomms_recv_waitq); /* An array of pointers to connections, indexed by NODEID */ static struct connection **connections; -static struct semaphore connections_lock; +static DECLARE_MUTEX(connections_lock); static kmem_cache_t *con_cache; static int conn_array_size; -static atomic_t accepting; /* List of sockets that have reads pending */ -static struct list_head read_sockets; -static spinlock_t read_sockets_lock; +static LIST_HEAD(read_sockets); +static DEFINE_SPINLOCK(read_sockets_lock); /* List of sockets which have writes pending */ -static struct list_head write_sockets; -static spinlock_t write_sockets_lock; +static LIST_HEAD(write_sockets); +static DEFINE_SPINLOCK(write_sockets_lock); /* List of sockets which have connects pending */ -static struct list_head state_sockets; -static spinlock_t state_sockets_lock; +static LIST_HEAD(state_sockets); +static DEFINE_SPINLOCK(state_sockets_lock); static struct connection *nodeid2con(int nodeid, gfp_t allocation) { @@ -153,12 +167,11 @@ static struct connection *nodeid2con(int nodeid, gfp_t allocation) int new_size = nodeid + NODE_INCREMENT; struct connection **new_conns; - new_conns = kmalloc(sizeof(struct connection *) * + new_conns = kzalloc(sizeof(struct connection *) * new_size, allocation); if (!new_conns) goto finish; - memset(new_conns, 0, sizeof(struct connection *) * new_size); memcpy(new_conns, connections, sizeof(struct connection *) * conn_array_size); conn_array_size = new_size; kfree(connections); @@ -168,11 +181,10 @@ static struct connection *nodeid2con(int nodeid, gfp_t allocation) con = connections[nodeid]; if (con == NULL && allocation) { - con = kmem_cache_alloc(con_cache, allocation); + con = kmem_cache_zalloc(con_cache, allocation); if (!con) goto finish; - memset(con, 0, sizeof(*con)); con->nodeid = nodeid; init_rwsem(&con->sock_sem); INIT_LIST_HEAD(&con->writequeue); @@ -181,7 +193,7 @@ static struct connection *nodeid2con(int nodeid, gfp_t allocation) connections[nodeid] = con; } - finish: +finish: up(&connections_lock); return con; } @@ -220,8 +232,6 @@ static inline void lowcomms_connect_sock(struct connection *con) { if (test_and_set_bit(CF_CONNECT_PENDING, &con->flags)) return; - if (!atomic_read(&accepting)) - return; spin_lock_bh(&state_sockets_lock); list_add_tail(&con->state_list, &state_sockets); @@ -232,31 +242,8 @@ static inline void lowcomms_connect_sock(struct connection *con) static void lowcomms_state_change(struct sock *sk) { -/* struct connection *con = sock2con(sk); */ - - switch (sk->sk_state) { - case TCP_ESTABLISHED: + if (sk->sk_state == TCP_ESTABLISHED) lowcomms_write_space(sk); - break; - - case TCP_FIN_WAIT1: - case TCP_FIN_WAIT2: - case TCP_TIME_WAIT: - case TCP_CLOSE: - case TCP_CLOSE_WAIT: - case TCP_LAST_ACK: - case TCP_CLOSING: - /* FIXME: I think this causes more trouble than it solves. - lowcomms wil reconnect anyway when there is something to - send. This just attempts reconnection if a node goes down! - */ - /* lowcomms_connect_sock(con); */ - break; - - default: - printk("dlm: lowcomms_state_change: state=%d\n", sk->sk_state); - break; - } } /* Make a socket active */ @@ -277,13 +264,12 @@ static int add_sock(struct socket *sock, struct connection *con) static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, int *addr_len) { - saddr->ss_family = dlm_local_addr.ss_family; - if (saddr->ss_family == AF_INET) { + saddr->ss_family = dlm_local_addr.ss_family; + if (saddr->ss_family == AF_INET) { struct sockaddr_in *in4_addr = (struct sockaddr_in *)saddr; in4_addr->sin_port = cpu_to_be16(port); *addr_len = sizeof(struct sockaddr_in); - } - else { + } else { struct sockaddr_in6 *in6_addr = (struct sockaddr_in6 *)saddr; in6_addr->sin6_port = cpu_to_be16(port); *addr_len = sizeof(struct sockaddr_in6); @@ -291,7 +277,7 @@ static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, } /* Close a remote connection and tidy up */ -static void close_connection(struct connection *con, int and_other) +static void close_connection(struct connection *con, bool and_other) { down_write(&con->sock_sem); @@ -300,11 +286,8 @@ static void close_connection(struct connection *con, int and_other) con->sock = NULL; } if (con->othercon && and_other) { - /* Argh! recursion in kernel code! - Actually, this isn't a list so it - will only re-enter once. - */ - close_connection(con->othercon, FALSE); + /* Will only re-enter once. */ + close_connection(con->othercon, false); } if (con->rx_page) { __free_page(con->rx_page); @@ -337,7 +320,7 @@ static int receive_from_sock(struct connection *con) con->rx_page = alloc_page(GFP_ATOMIC); if (con->rx_page == NULL) goto out_resched; - CBUF_INIT(&con->cb, PAGE_CACHE_SIZE); + cbuf_init(&con->cb, PAGE_CACHE_SIZE); } msg.msg_control = NULL; @@ -352,16 +335,16 @@ static int receive_from_sock(struct connection *con) * iov[0] is the bit of the circular buffer between the current end * point (cb.base + cb.len) and the end of the buffer. */ - iov[0].iov_len = con->cb.base - CBUF_DATA(&con->cb); - iov[0].iov_base = page_address(con->rx_page) + CBUF_DATA(&con->cb); + iov[0].iov_len = con->cb.base - cbuf_data(&con->cb); + iov[0].iov_base = page_address(con->rx_page) + cbuf_data(&con->cb); iov[1].iov_len = 0; /* * iov[1] is the bit of the circular buffer between the start of the * buffer and the start of the currently used section (cb.base) */ - if (CBUF_DATA(&con->cb) >= con->cb.base) { - iov[0].iov_len = PAGE_CACHE_SIZE - CBUF_DATA(&con->cb); + if (cbuf_data(&con->cb) >= con->cb.base) { + iov[0].iov_len = PAGE_CACHE_SIZE - cbuf_data(&con->cb); iov[1].iov_len = con->cb.base; iov[1].iov_base = page_address(con->rx_page); msg.msg_iovlen = 2; @@ -378,7 +361,7 @@ static int receive_from_sock(struct connection *con) goto out_close; if (ret == len) call_again_soon = 1; - CBUF_ADD(&con->cb, ret); + cbuf_add(&con->cb, ret); ret = dlm_process_incoming_buffer(con->nodeid, page_address(con->rx_page), con->cb.base, con->cb.len, @@ -391,35 +374,32 @@ static int receive_from_sock(struct connection *con) } if (ret < 0) goto out_close; - CBUF_EAT(&con->cb, ret); + cbuf_eat(&con->cb, ret); - if (CBUF_EMPTY(&con->cb) && !call_again_soon) { + if (cbuf_empty(&con->cb) && !call_again_soon) { __free_page(con->rx_page); con->rx_page = NULL; } - out: +out: if (call_again_soon) goto out_resched; up_read(&con->sock_sem); - ret = 0; - goto out_ret; + return 0; - out_resched: +out_resched: lowcomms_data_ready(con->sock->sk, 0); up_read(&con->sock_sem); - ret = 0; - schedule(); - goto out_ret; + cond_resched(); + return 0; - out_close: +out_close: up_read(&con->sock_sem); if (ret != -EAGAIN && !test_bit(CF_IS_OTHERCON, &con->flags)) { - close_connection(con, FALSE); + close_connection(con, false); /* Reconnect when there is something to send */ } - out_ret: return ret; } @@ -434,7 +414,8 @@ static int accept_from_sock(struct connection *con) struct connection *newcon; memset(&peeraddr, 0, sizeof(peeraddr)); - result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, IPPROTO_TCP, &newsock); + result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, + IPPROTO_TCP, &newsock); if (result < 0) return -ENOMEM; @@ -462,7 +443,7 @@ static int accept_from_sock(struct connection *con) /* Get the new node's NODEID */ make_sockaddr(&peeraddr, 0, &len); if (dlm_addr_to_nodeid(&peeraddr, &nodeid)) { - printk("dlm: connect from non cluster node\n"); + printk("dlm: connect from non cluster node\n"); sock_release(newsock); up_read(&con->sock_sem); return -1; @@ -483,17 +464,16 @@ static int accept_from_sock(struct connection *con) } down_write(&newcon->sock_sem); if (newcon->sock) { - struct connection *othercon = newcon->othercon; + struct connection *othercon = newcon->othercon; if (!othercon) { - othercon = kmem_cache_alloc(con_cache, GFP_KERNEL); + othercon = kmem_cache_zalloc(con_cache, GFP_KERNEL); if (!othercon) { printk("dlm: failed to allocate incoming socket\n"); up_write(&newcon->sock_sem); result = -ENOMEM; goto accept_err; } - memset(othercon, 0, sizeof(*othercon)); othercon->nodeid = nodeid; othercon->rx_action = receive_from_sock; init_rwsem(&othercon->sock_sem); @@ -523,7 +503,7 @@ static int accept_from_sock(struct connection *con) return 0; - accept_err: +accept_err: up_read(&con->sock_sem); sock_release(newsock); @@ -533,7 +513,7 @@ static int accept_from_sock(struct connection *con) } /* Connect a new socket to its peer */ -static int connect_to_sock(struct connection *con) +static void connect_to_sock(struct connection *con) { int result = -EHOSTUNREACH; struct sockaddr_storage saddr; @@ -542,7 +522,7 @@ static int connect_to_sock(struct connection *con) if (con->nodeid == 0) { log_print("attempt to connect sock 0 foiled"); - return 0; + return; } down_write(&con->sock_sem); @@ -556,13 +536,14 @@ static int connect_to_sock(struct connection *con) } /* Create a socket to communicate with */ - result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, IPPROTO_TCP, &sock); + result = sock_create_kern(dlm_local_addr.ss_family, SOCK_STREAM, + IPPROTO_TCP, &sock); if (result < 0) goto out_err; memset(&saddr, 0, sizeof(saddr)); if (dlm_nodeid_to_addr(con->nodeid, &saddr)) - goto out_err; + goto out_err; sock->sk->sk_user_data = con; con->rx_action = receive_from_sock; @@ -574,22 +555,13 @@ static int connect_to_sock(struct connection *con) log_print("connecting to %d", con->nodeid); result = sock->ops->connect(sock, (struct sockaddr *)&saddr, addr_len, - O_NONBLOCK); + O_NONBLOCK); if (result == -EINPROGRESS) result = 0; - if (result != 0) - goto out_err; - - out: - up_write(&con->sock_sem); - /* - * Returning an error here means we've given up trying to connect to - * a remote node, otherwise we return 0 and reschedule the connetion - * attempt - */ - return result; + if (result == 0) + goto out; - out_err: +out_err: if (con->sock) { sock_release(con->sock); con->sock = NULL; @@ -604,12 +576,15 @@ static int connect_to_sock(struct connection *con) lowcomms_connect_sock(con); result = 0; } - goto out; +out: + up_write(&con->sock_sem); + return; } -static struct socket *create_listen_sock(struct connection *con, struct sockaddr_storage *saddr) +static struct socket *create_listen_sock(struct connection *con, + struct sockaddr_storage *saddr) { - struct socket *sock = NULL; + struct socket *sock = NULL; mm_segment_t fs; int result = 0; int one = 1; @@ -629,10 +604,12 @@ static struct socket *create_listen_sock(struct connection *con, struct sockaddr fs = get_fs(); set_fs(get_ds()); - result = sock_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one)); + result = sock_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, + (char *)&one, sizeof(one)); set_fs(fs); if (result < 0) { - printk("dlm: Failed to set SO_REUSEADDR on socket: result=%d\n",result); + printk("dlm: Failed to set SO_REUSEADDR on socket: result=%d\n", + result); } sock->sk->sk_user_data = con; con->rx_action = accept_from_sock; @@ -652,7 +629,8 @@ static struct socket *create_listen_sock(struct connection *con, struct sockaddr fs = get_fs(); set_fs(get_ds()); - result = sock_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&one, sizeof(one)); + result = sock_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, + (char *)&one, sizeof(one)); set_fs(fs); if (result < 0) { printk("dlm: Set keepalive failed: %d\n", result); @@ -666,7 +644,7 @@ static struct socket *create_listen_sock(struct connection *con, struct sockaddr goto create_out; } - create_out: +create_out: return sock; } @@ -679,10 +657,6 @@ static int listen_for_all(void) int result = -EINVAL; /* We don't support multi-homed hosts */ - memset(con, 0, sizeof(*con)); - init_rwsem(&con->sock_sem); - spin_lock_init(&con->writequeue_lock); - INIT_LIST_HEAD(&con->writequeue); set_bit(CF_IS_OTHERCON, &con->flags); sock = create_listen_sock(con, &dlm_local_addr); @@ -731,16 +705,12 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, int offset = 0; int users = 0; - if (!atomic_read(&accepting)) - return NULL; - con = nodeid2con(nodeid, allocation); if (!con) return NULL; - spin_lock(&con->writequeue_lock); e = list_entry(con->writequeue.prev, struct writequeue_entry, list); - if (((struct list_head *) e == &con->writequeue) || + if ((&e->list == &con->writequeue) || (PAGE_CACHE_SIZE - e->end < len)) { e = NULL; } else { @@ -751,7 +721,7 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, spin_unlock(&con->writequeue_lock); if (e) { - got_one: + got_one: if (users == 0) kmap(e->page); *ppc = page_address(e->page) + offset; @@ -777,10 +747,6 @@ void dlm_lowcomms_commit_buffer(void *mh) struct connection *con = e->con; int users; - if (!atomic_read(&accepting)) - return; - - spin_lock(&con->writequeue_lock); users = --e->users; if (users) goto out; @@ -797,7 +763,7 @@ void dlm_lowcomms_commit_buffer(void *mh) } return; - out: +out: spin_unlock(&con->writequeue_lock); return; } @@ -809,7 +775,7 @@ static void free_entry(struct writequeue_entry *e) } /* Send a message */ -static int send_to_sock(struct connection *con) +static void send_to_sock(struct connection *con) { int ret = 0; ssize_t(*sendpage) (struct socket *, struct page *, int, size_t, int); @@ -846,7 +812,7 @@ static int send_to_sock(struct connection *con) } else { /* Don't starve people filling buffers */ - schedule(); + cond_resched(); } spin_lock(&con->writequeue_lock); @@ -855,25 +821,26 @@ static int send_to_sock(struct connection *con) if (e->len == 0 && e->users == 0) { list_del(&e->list); + kunmap(e->page); free_entry(e); continue; } } spin_unlock(&con->writequeue_lock); - out: +out: up_read(&con->sock_sem); - return ret; + return; - send_error: +send_error: up_read(&con->sock_sem); - close_connection(con, FALSE); + close_connection(con, false); lowcomms_connect_sock(con); - return ret; + return; - out_connect: +out_connect: up_read(&con->sock_sem); lowcomms_connect_sock(con); - return 0; + return; } static void clean_one_writequeue(struct connection *con) @@ -904,12 +871,12 @@ int dlm_lowcomms_close(int nodeid) con = nodeid2con(nodeid, 0); if (con) { clean_one_writequeue(con); - close_connection(con, TRUE); + close_connection(con, true); atomic_set(&con->waiting_requests, 0); } return 0; - out: +out: return -1; } @@ -940,7 +907,7 @@ static void process_sockets(void) list_for_each_safe(list, temp, &read_sockets) { struct connection *con = - list_entry(list, struct connection, read_list); + list_entry(list, struct connection, read_list); list_del(&con->read_list); clear_bit(CF_READ_PENDING, &con->flags); @@ -959,7 +926,7 @@ static void process_sockets(void) /* Don't starve out everyone else */ if (++count >= MAX_RX_MSG_COUNT) { - schedule(); + cond_resched(); count = 0; } @@ -977,20 +944,16 @@ static void process_output_queue(void) { struct list_head *list; struct list_head *temp; - int ret; spin_lock_bh(&write_sockets_lock); list_for_each_safe(list, temp, &write_sockets) { struct connection *con = - list_entry(list, struct connection, write_list); + list_entry(list, struct connection, write_list); clear_bit(CF_WRITE_PENDING, &con->flags); list_del(&con->write_list); spin_unlock_bh(&write_sockets_lock); - - ret = send_to_sock(con); - if (ret < 0) { - } + send_to_sock(con); spin_lock_bh(&write_sockets_lock); } spin_unlock_bh(&write_sockets_lock); @@ -1000,19 +963,16 @@ static void process_state_queue(void) { struct list_head *list; struct list_head *temp; - int ret; spin_lock_bh(&state_sockets_lock); list_for_each_safe(list, temp, &state_sockets) { struct connection *con = - list_entry(list, struct connection, state_list); + list_entry(list, struct connection, state_list); list_del(&con->state_list); clear_bit(CF_CONNECT_PENDING, &con->flags); spin_unlock_bh(&state_sockets_lock); - ret = connect_to_sock(con); - if (ret < 0) { - } + connect_to_sock(con); spin_lock_bh(&state_sockets_lock); } spin_unlock_bh(&state_sockets_lock); @@ -1046,14 +1006,13 @@ static int read_list_empty(void) /* DLM Transport comms receive daemon */ static int dlm_recvd(void *data) { - init_waitqueue_head(&lowcomms_recv_waitq); init_waitqueue_entry(&lowcomms_recv_waitq_head, current); add_wait_queue(&lowcomms_recv_waitq, &lowcomms_recv_waitq_head); while (!kthread_should_stop()) { set_current_state(TASK_INTERRUPTIBLE); if (read_list_empty()) - schedule(); + cond_resched(); set_current_state(TASK_RUNNING); process_sockets(); @@ -1081,14 +1040,13 @@ static int write_and_state_lists_empty(void) /* DLM Transport send daemon */ static int dlm_sendd(void *data) { - init_waitqueue_head(&lowcomms_send_waitq); init_waitqueue_entry(&lowcomms_send_waitq_head, current); add_wait_queue(&lowcomms_send_waitq, &lowcomms_send_waitq_head); while (!kthread_should_stop()) { set_current_state(TASK_INTERRUPTIBLE); if (write_and_state_lists_empty()) - schedule(); + cond_resched(); set_current_state(TASK_RUNNING); process_state_queue(); @@ -1111,7 +1069,7 @@ static int daemons_start(void) p = kthread_run(dlm_recvd, NULL, "dlm_recvd"); error = IS_ERR(p); - if (error) { + if (error) { log_print("can't start dlm_recvd %d", error); return error; } @@ -1119,7 +1077,7 @@ static int daemons_start(void) p = kthread_run(dlm_sendd, NULL, "dlm_sendd"); error = IS_ERR(p); - if (error) { + if (error) { log_print("can't start dlm_sendd %d", error); kthread_stop(recv_task); return error; @@ -1141,21 +1099,20 @@ void dlm_lowcomms_stop(void) { int i; - atomic_set(&accepting, 0); - - /* Set all the activity flags to prevent any + /* Set all the flags to prevent any socket activity. */ for (i = 0; i < conn_array_size; i++) { if (connections[i]) - connections[i]->flags |= 0x7; + connections[i]->flags |= 0xFF; } + daemons_stop(); clean_writequeues(); for (i = 0; i < conn_array_size; i++) { if (connections[i]) { - close_connection(connections[i], TRUE); + close_connection(connections[i], true); if (connections[i]->othercon) kmem_cache_free(con_cache, connections[i]->othercon); kmem_cache_free(con_cache, connections[i]); @@ -1173,24 +1130,12 @@ int dlm_lowcomms_start(void) { int error = 0; - error = -ENOTCONN; - - /* - * Temporarily initialise the waitq head so that lowcomms_send_message - * doesn't crash if it gets called before the thread is fully - * initialised - */ - init_waitqueue_head(&lowcomms_send_waitq); - error = -ENOMEM; - connections = kmalloc(sizeof(struct connection *) * + connections = kzalloc(sizeof(struct connection *) * NODE_INCREMENT, GFP_KERNEL); if (!connections) goto out; - memset(connections, 0, - sizeof(struct connection *) * NODE_INCREMENT); - conn_array_size = NODE_INCREMENT; if (dlm_our_addr(&dlm_local_addr, 0)) { @@ -1203,7 +1148,8 @@ int dlm_lowcomms_start(void) } con_cache = kmem_cache_create("dlm_conn", sizeof(struct connection), - __alignof__(struct connection), 0, NULL, NULL); + __alignof__(struct connection), 0, + NULL, NULL); if (!con_cache) goto fail_free_conn; @@ -1217,40 +1163,20 @@ int dlm_lowcomms_start(void) if (error) goto fail_unlisten; - atomic_set(&accepting, 1); - return 0; - fail_unlisten: - close_connection(connections[0], 0); +fail_unlisten: + close_connection(connections[0], false); kmem_cache_free(con_cache, connections[0]); kmem_cache_destroy(con_cache); - fail_free_conn: +fail_free_conn: kfree(connections); - out: +out: return error; } -int dlm_lowcomms_init(void) -{ - INIT_LIST_HEAD(&read_sockets); - INIT_LIST_HEAD(&write_sockets); - INIT_LIST_HEAD(&state_sockets); - - spin_lock_init(&read_sockets_lock); - spin_lock_init(&write_sockets_lock); - spin_lock_init(&state_sockets_lock); - init_MUTEX(&connections_lock); - - return 0; -} - -void dlm_lowcomms_exit(void) -{ -} - /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff --git a/fs/dlm/lowcomms.h b/fs/dlm/lowcomms.h index 2d045e0..a9a9618 100644 --- a/fs/dlm/lowcomms.h +++ b/fs/dlm/lowcomms.h @@ -14,8 +14,6 @@ #ifndef __LOWCOMMS_DOT_H__ #define __LOWCOMMS_DOT_H__ -int dlm_lowcomms_init(void); -void dlm_lowcomms_exit(void); int dlm_lowcomms_start(void); void dlm_lowcomms_stop(void); int dlm_lowcomms_close(int nodeid); diff --git a/fs/dlm/main.c b/fs/dlm/main.c index a8da8dc..162fbae 100644 --- a/fs/dlm/main.c +++ b/fs/dlm/main.c @@ -16,7 +16,6 @@ #include "lock.h" #include "user.h" #include "memory.h" -#include "lowcomms.h" #include "config.h" #ifdef CONFIG_DLM_DEBUG @@ -47,20 +46,14 @@ static int __init init_dlm(void) if (error) goto out_config; - error = dlm_lowcomms_init(); - if (error) - goto out_debug; - error = dlm_user_init(); if (error) - goto out_lowcomms; + goto out_debug; printk("DLM (built %s %s) installed\n", __DATE__, __TIME__); return 0; - out_lowcomms: - dlm_lowcomms_exit(); out_debug: dlm_unregister_debugfs(); out_config: @@ -76,7 +69,6 @@ static int __init init_dlm(void) static void __exit exit_dlm(void) { dlm_user_exit(); - dlm_lowcomms_exit(); dlm_config_exit(); dlm_memory_exit(); dlm_lockspace_exit(); -- cgit v0.10.2