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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-31 01:48:25 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-31 01:48:25 (GMT) |
commit | 6a94cb73064c952255336cc57731904174b2c58f (patch) | |
tree | d19cc835db0a21e01909a92772868e1ad96f99ff /fs/xfs/linux-2.6/xfs_iops.c | |
parent | f57fa1d6a6b3414e853d3d17e339ac48816e4406 (diff) | |
parent | 0a8c5395f90f06d128247844b2515c8bf3f2826b (diff) | |
download | linux-fsl-qoriq-6a94cb73064c952255336cc57731904174b2c58f.tar.xz |
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (184 commits)
[XFS] Fix race in xfs_write() between direct and buffered I/O with DMAPI
[XFS] handle unaligned data in xfs_bmbt_disk_get_all
[XFS] avoid memory allocations in xfs_fs_vcmn_err
[XFS] Fix speculative allocation beyond eof
[XFS] Remove XFS_BUF_SHUT() and friends
[XFS] Use the incore inode size in xfs_file_readdir()
[XFS] set b_error from bio error in xfs_buf_bio_end_io
[XFS] use inode_change_ok for setattr permission checking
[XFS] add a FMODE flag to make XFS invisible I/O less hacky
[XFS] resync headers with libxfs
[XFS] simplify projid check in xfs_rename
[XFS] replace b_fspriv with b_mount
[XFS] Remove unused tracing code
[XFS] Remove unnecessary assertion
[XFS] Remove unused variable in ktrace_free()
[XFS] Check return value of xfs_buf_get_noaddr()
[XFS] Fix hang after disallowed rename across directory quota domains
[XFS] Fix compile with CONFIG_COMPAT enabled
move inode tracing out of xfs_vnode.
move vn_iowait / vn_iowake into xfs_aops.c
...
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_iops.c')
-rw-r--r-- | fs/xfs/linux-2.6/xfs_iops.c | 122 |
1 files changed, 103 insertions, 19 deletions
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 095d271..7aa53fe 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -53,6 +53,7 @@ #include <linux/namei.h> #include <linux/security.h> #include <linux/falloc.h> +#include <linux/fiemap.h> /* * Bring the atime in the XFS inode uptodate. @@ -64,14 +65,14 @@ xfs_synchronize_atime( { struct inode *inode = VFS_I(ip); - if (inode) { + if (!(inode->i_state & I_CLEAR)) { ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; } } /* - * If the linux inode exists, mark it dirty. + * If the linux inode is valid, mark it dirty. * Used when commiting a dirty inode into a transaction so that * the inode will get written back by the linux code */ @@ -81,7 +82,7 @@ xfs_mark_inode_dirty_sync( { struct inode *inode = VFS_I(ip); - if (inode) + if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) mark_inode_dirty_sync(inode); } @@ -128,7 +129,7 @@ xfs_ichgtime( if (sync_it) { SYNCHRONIZE(); ip->i_update_core = 1; - mark_inode_dirty_sync(inode); + xfs_mark_inode_dirty_sync(ip); } } @@ -158,8 +159,6 @@ xfs_init_security( } error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); - if (!error) - xfs_iflags_set(ip, XFS_IMODIFIED); kfree(name); kfree(value); @@ -260,7 +259,6 @@ xfs_vn_mknod( error = _ACL_INHERIT(inode, mode, default_acl); if (unlikely(error)) goto out_cleanup_inode; - xfs_iflags_set(ip, XFS_IMODIFIED); _ACL_FREE(default_acl); } @@ -366,21 +364,17 @@ xfs_vn_link( struct inode *dir, struct dentry *dentry) { - struct inode *inode; /* inode of guy being linked to */ + struct inode *inode = old_dentry->d_inode; struct xfs_name name; int error; - inode = old_dentry->d_inode; xfs_dentry_to_name(&name, dentry); - igrab(inode); error = xfs_link(XFS_I(dir), XFS_I(inode), &name); - if (unlikely(error)) { - iput(inode); + if (unlikely(error)) return -error; - } - xfs_iflags_set(XFS_I(dir), XFS_IMODIFIED); + atomic_inc(&inode->i_count); d_instantiate(dentry, inode); return 0; } @@ -601,7 +595,7 @@ xfs_vn_setattr( struct dentry *dentry, struct iattr *iattr) { - return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0, NULL); + return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); } /* @@ -642,7 +636,7 @@ xfs_vn_fallocate( xfs_ilock(ip, XFS_IOLOCK_EXCL); error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, - 0, NULL, XFS_ATTR_NOLOCK); + 0, XFS_ATTR_NOLOCK); if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && offset + len > i_size_read(inode)) new_size = offset + len; @@ -653,7 +647,7 @@ xfs_vn_fallocate( iattr.ia_valid = ATTR_SIZE; iattr.ia_size = new_size; - error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK, NULL); + error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); } xfs_iunlock(ip, XFS_IOLOCK_EXCL); @@ -661,6 +655,88 @@ out_error: return error; } +#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) + +/* + * Call fiemap helper to fill in user data. + * Returns positive errors to xfs_getbmap. + */ +STATIC int +xfs_fiemap_format( + void **arg, + struct getbmapx *bmv, + int *full) +{ + int error; + struct fiemap_extent_info *fieinfo = *arg; + u32 fiemap_flags = 0; + u64 logical, physical, length; + + /* Do nothing for a hole */ + if (bmv->bmv_block == -1LL) + return 0; + + logical = BBTOB(bmv->bmv_offset); + physical = BBTOB(bmv->bmv_block); + length = BBTOB(bmv->bmv_length); + + if (bmv->bmv_oflags & BMV_OF_PREALLOC) + fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; + else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { + fiemap_flags |= FIEMAP_EXTENT_DELALLOC; + physical = 0; /* no block yet */ + } + if (bmv->bmv_oflags & BMV_OF_LAST) + fiemap_flags |= FIEMAP_EXTENT_LAST; + + error = fiemap_fill_next_extent(fieinfo, logical, physical, + length, fiemap_flags); + if (error > 0) { + error = 0; + *full = 1; /* user array now full */ + } + + return -error; +} + +STATIC int +xfs_vn_fiemap( + struct inode *inode, + struct fiemap_extent_info *fieinfo, + u64 start, + u64 length) +{ + xfs_inode_t *ip = XFS_I(inode); + struct getbmapx bm; + int error; + + error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); + if (error) + return error; + + /* Set up bmap header for xfs internal routine */ + bm.bmv_offset = BTOBB(start); + /* Special case for whole file */ + if (length == FIEMAP_MAX_OFFSET) + bm.bmv_length = -1LL; + else + bm.bmv_length = BTOBB(length); + + /* our formatter will tell xfs_getbmap when to stop. */ + bm.bmv_count = MAXEXTNUM; + bm.bmv_iflags = BMV_IF_PREALLOC; + if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) + bm.bmv_iflags |= BMV_IF_ATTRFORK; + if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) + bm.bmv_iflags |= BMV_IF_DELALLOC; + + error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); + if (error) + return -error; + + return 0; +} + static const struct inode_operations xfs_inode_operations = { .permission = xfs_vn_permission, .truncate = xfs_vn_truncate, @@ -671,6 +747,7 @@ static const struct inode_operations xfs_inode_operations = { .removexattr = generic_removexattr, .listxattr = xfs_vn_listxattr, .fallocate = xfs_vn_fallocate, + .fiemap = xfs_vn_fiemap, }; static const struct inode_operations xfs_dir_inode_operations = { @@ -766,12 +843,20 @@ xfs_diflags_to_iflags( * When reading existing inodes from disk this is called directly * from xfs_iget, when creating a new inode it is called from * xfs_ialloc after setting up the inode. + * + * We are always called with an uninitialised linux inode here. + * We need to initialise the necessary fields and take a reference + * on it. */ void xfs_setup_inode( struct xfs_inode *ip) { - struct inode *inode = ip->i_vnode; + struct inode *inode = &ip->i_vnode; + + inode->i_ino = ip->i_ino; + inode->i_state = I_NEW|I_LOCK; + inode_add_to_lists(ip->i_mount->m_super, inode); inode->i_mode = ip->i_d.di_mode; inode->i_nlink = ip->i_d.di_nlink; @@ -799,7 +884,6 @@ xfs_setup_inode( inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; xfs_diflags_to_iflags(inode, ip); - xfs_iflags_clear(ip, XFS_IMODIFIED); switch (inode->i_mode & S_IFMT) { case S_IFREG: |