diff options
author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2015-02-16 23:59:15 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-17 01:56:03 (GMT) |
commit | 0de4830fd49f60d04ba37e8b32f95100f3953c39 (patch) | |
tree | a37fba1094d21dd0474cd8ab4edffa7c687b4f69 | |
parent | e748dcd095ddee50e7a7deda2e26247715318a2e (diff) | |
download | linux-0de4830fd49f60d04ba37e8b32f95100f3953c39.tar.xz |
ext2: remove ext2_xip_verify_sb()
Jan Kara pointed out that calling ext2_xip_verify_sb() in ext2_remount()
doesn't make sense, since changing the XIP option on remount isn't
allowed. It also doesn't make sense to re-check whether blocksize is
supported since it can't change between mounts.
Replace the call to ext2_xip_verify_sb() in ext2_fill_super() with the
equivalent check and delete the definition.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | fs/ext2/super.c | 33 | ||||
-rw-r--r-- | fs/ext2/xip.c | 12 | ||||
-rw-r--r-- | fs/ext2/xip.h | 2 |
3 files changed, 12 insertions, 35 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index ae55fdd..83c5d51 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -877,9 +877,6 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) ((EXT2_SB(sb)->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); - ext2_xip_verify_sb(sb); /* see if bdev supports xip, unset - EXT2_MOUNT_XIP if not */ - if (le32_to_cpu(es->s_rev_level) == EXT2_GOOD_OLD_REV && (EXT2_HAS_COMPAT_FEATURE(sb, ~0U) || EXT2_HAS_RO_COMPAT_FEATURE(sb, ~0U) || @@ -909,11 +906,17 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size); - if (ext2_use_xip(sb) && blocksize != PAGE_SIZE) { - if (!silent) + if (sbi->s_mount_opt & EXT2_MOUNT_XIP) { + if (blocksize != PAGE_SIZE) { ext2_msg(sb, KERN_ERR, - "error: unsupported blocksize for xip"); - goto failed_mount; + "error: unsupported blocksize for xip"); + goto failed_mount; + } + if (!sb->s_bdev->bd_disk->fops->direct_access) { + ext2_msg(sb, KERN_ERR, + "error: device does not support xip"); + goto failed_mount; + } } /* If the blocksize doesn't match, re-read the thing.. */ @@ -1259,7 +1262,6 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data) { struct ext2_sb_info * sbi = EXT2_SB(sb); struct ext2_super_block * es; - unsigned long old_mount_opt = sbi->s_mount_opt; struct ext2_mount_options old_opts; unsigned long old_sb_flags; int err; @@ -1284,22 +1286,11 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data) sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | ((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); - ext2_xip_verify_sb(sb); /* see if bdev supports xip, unset - EXT2_MOUNT_XIP if not */ - - if ((ext2_use_xip(sb)) && (sb->s_blocksize != PAGE_SIZE)) { - ext2_msg(sb, KERN_WARNING, - "warning: unsupported blocksize for xip"); - err = -EINVAL; - goto restore_opts; - } - es = sbi->s_es; - if ((sbi->s_mount_opt ^ old_mount_opt) & EXT2_MOUNT_XIP) { + if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT2_MOUNT_XIP) { ext2_msg(sb, KERN_WARNING, "warning: refusing change of " "xip flag with busy inodes while remounting"); - sbi->s_mount_opt &= ~EXT2_MOUNT_XIP; - sbi->s_mount_opt |= old_mount_opt & EXT2_MOUNT_XIP; + sbi->s_mount_opt ^= EXT2_MOUNT_XIP; } if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { spin_unlock(&sbi->s_lock); diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c index 132d4da..66ca113 100644 --- a/fs/ext2/xip.c +++ b/fs/ext2/xip.c @@ -13,15 +13,3 @@ #include "ext2.h" #include "xip.h" -void ext2_xip_verify_sb(struct super_block *sb) -{ - struct ext2_sb_info *sbi = EXT2_SB(sb); - - if ((sbi->s_mount_opt & EXT2_MOUNT_XIP) && - !sb->s_bdev->bd_disk->fops->direct_access) { - sbi->s_mount_opt &= (~EXT2_MOUNT_XIP); - ext2_msg(sb, KERN_WARNING, - "warning: ignoring xip option - " - "not supported by bdev"); - } -} diff --git a/fs/ext2/xip.h b/fs/ext2/xip.h index e7b9f0a..87eeb04 100644 --- a/fs/ext2/xip.h +++ b/fs/ext2/xip.h @@ -6,13 +6,11 @@ */ #ifdef CONFIG_EXT2_FS_XIP -extern void ext2_xip_verify_sb (struct super_block *); static inline int ext2_use_xip (struct super_block *sb) { struct ext2_sb_info *sbi = EXT2_SB(sb); return (sbi->s_mount_opt & EXT2_MOUNT_XIP); } #else -#define ext2_xip_verify_sb(sb) do { } while (0) #define ext2_use_xip(sb) 0 #endif |