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| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-07-03 16:43:28 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-22 23:58:12 +0400 |
| commit | 9d46be294d12871adf4206f89168b14d27adb8b5 (patch) | |
| tree | 6851c9f7d278bcf8a7cf01ac65f670dbb3aa95bf | |
| parent | eee458936b52bd3a9ff0ff577313b637905fff08 (diff) | |
| download | linux-9d46be294d12871adf4206f89168b14d27adb8b5.tar.gz linux-9d46be294d12871adf4206f89168b14d27adb8b5.tar.bz2 linux-9d46be294d12871adf4206f89168b14d27adb8b5.zip | |
fs/sysv: stop using write_super and s_dirt
It does not look like sysv FS needs 'write_super()' at all, because all it
does is a timestamp update. I cannot test this patch, because this
file-system is so old and probably has not been used by anyone for years,
so there are no tools to create it in Linux. But from the code I see that
marking the superblock as dirty is basically marking the superblock buffers as
drity and then setting the s_dirt flag. And when 'write_super()' is executed to
handle the s_dirt flag, we just update the timestamp and again mark the
superblock buffer as dirty. Seems pointless.
It looks like we can update the timestamp more opprtunistically - on unmount
or remount of sync, and nothing should change.
Thus, this patch removes 'sysv_write_super()' and 's_dirt'.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/sysv/inode.c | 10 | ||||
| -rw-r--r-- | fs/sysv/sysv.h | 1 |
2 files changed, 0 insertions, 11 deletions
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c index f20ffe32b398..80e1e2b18df1 100644 --- a/fs/sysv/inode.c +++ b/fs/sysv/inode.c @@ -43,7 +43,6 @@ static int sysv_sync_fs(struct super_block *sb, int wait) * then attach current time stamp. * But if the filesystem was marked clean, keep it clean. */ - sb->s_dirt = 0; old_time = fs32_to_cpu(sbi, *sbi->s_sb_time); if (sbi->s_type == FSTYPE_SYSV4) { if (*sbi->s_sb_state == cpu_to_fs32(sbi, 0x7c269d38 - old_time)) @@ -57,14 +56,6 @@ static int sysv_sync_fs(struct super_block *sb, int wait) return 0; } -static void sysv_write_super(struct super_block *sb) -{ - if (!(sb->s_flags & MS_RDONLY)) - sysv_sync_fs(sb, 1); - else - sb->s_dirt = 0; -} - static int sysv_remount(struct super_block *sb, int *flags, char *data) { struct sysv_sb_info *sbi = SYSV_SB(sb); @@ -351,7 +342,6 @@ const struct super_operations sysv_sops = { .write_inode = sysv_write_inode, .evict_inode = sysv_evict_inode, .put_super = sysv_put_super, - .write_super = sysv_write_super, .sync_fs = sysv_sync_fs, .remount_fs = sysv_remount, .statfs = sysv_statfs, diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h index 11b07672f6c5..0bc35fdc58e2 100644 --- a/fs/sysv/sysv.h +++ b/fs/sysv/sysv.h @@ -117,7 +117,6 @@ static inline void dirty_sb(struct super_block *sb) mark_buffer_dirty(sbi->s_bh1); if (sbi->s_bh1 != sbi->s_bh2) mark_buffer_dirty(sbi->s_bh2); - sb->s_dirt = 1; } |