The patch titled
Subject: fs/ufs: remove extra superblock write on unmount
has been added to the -mm tree. Its filename is
fs-ufs-remove-extra-superblock-write-on-unmount.patch
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From: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
Subject: fs/ufs: remove extra superblock write on unmount
This patchset makes UFS file-system stop using the VFS '->write_supers()'
call-back and the '->s_dirt' superblock field because I plan to remove
them once all users are gone.
Like some other similar patch-sets (affs, hfs, hfsplus, reiserfs), we
switch to a delayed job for writing out the superblock instead of using
the 's_dirt' flag. Additionally, this patch-set includes several
clean-ups.
Tested using the fsstress test from the LTP project.
This patch: remove extra superblock write on unmount
UFS calls 'ufs_write_super()' from 'ufs_put_super()' in order to write the
superblocks to the media. However, it is not needed because VFS calls
'->sync_fs()' before calling '->put_super()' - so by the time we are in
'ufs_write_super()', the superblocks are already synchronized.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Evgeniy Dushistov <dushistov@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ufs/super.c | 3 ---
1 file changed, 3 deletions(-)
diff -puN fs/ufs/super.c~fs-ufs-remove-extra-superblock-write-on-unmount fs/ufs/super.c
--- a/fs/ufs/super.c~fs-ufs-remove-extra-superblock-write-on-unmount
+++ a/fs/ufs/super.c
@@ -1238,9 +1238,6 @@ static void ufs_put_super(struct super_b
UFSD("ENTER\n");
- if (sb->s_dirt)
- ufs_write_super(sb);
-
if (!(sb->s_flags & MS_RDONLY))
ufs_put_super_internal(sb);
_
Subject: Subject: fs/ufs: remove extra superblock write on unmount
Patches currently in -mm which might be from artem.bityutskiy@xxxxxxxxxxxxxxx are
linux-next.patch
hfs-push-lock_super-down.patch
hfs-get-rid-of-lock_super.patch
hfs-remove-extra-mdb-write-on-unmount.patch
hfs-simplify-a-bit-checking-for-r-o.patch
hfs-introduce-vfs-superblock-object-back-reference.patch
hfs-get-rid-of-hfs_sync_super.patch
hfs-get-rid-of-hfs_sync_super-checkpatch-fixes.patch
hfsplus-make-hfsplus_sync_fs-static.patch
hfsplus-amend-debugging-print.patch
hfsplus-remove-useless-check.patch
hfsplus-get-rid-of-write_super.patch
hfsplus-get-rid-of-write_super-checkpatch-fixes.patch
fs-ufs-remove-extra-superblock-write-on-unmount.patch
fs-ufs-re-arrange-the-code-a-bit.patch
fs-ufs-get-rid-of-write_super.patch
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