diff options
| author | Christoph Hellwig <hch@lst.de> | 2009-05-11 23:35:03 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-11 21:36:09 -0400 |
| commit | ebc1ac164560a241d9bf1b7519062910c3f90a01 (patch) | |
| tree | db17fd3043b15f8269cce2c2d00213814022fc30 /fs/ufs | |
| parent | 01ba687577647beef6c5f2ea59bfb56fac9fcde2 (diff) | |
| download | lwn-ebc1ac164560a241d9bf1b7519062910c3f90a01.tar.gz lwn-ebc1ac164560a241d9bf1b7519062910c3f90a01.zip | |
->write_super lock_super pushdown
Push down lock_super into ->write_super instances and remove it from the
caller.
Following filesystem don't need ->s_lock in ->write_super and are skipped:
* bfs, nilfs2 - no other uses of s_lock and have internal locks in
->write_super
* ext2 - uses BKL in ext2_write_super and has internal calls without s_lock
* reiserfs - no other uses of s_lock as has reiserfs_write_lock (BKL) in
->write_super
* xfs - no other uses of s_lock and uses internal lock (buffer lock on
superblock buffer) to serialize ->write_super. Also xfs_fs_write_super
is superflous and will go away in the next merge window
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs')
| -rw-r--r-- | fs/ufs/super.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ufs/super.c b/fs/ufs/super.c index a5ecabfdc976..c97210ee0670 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -1131,6 +1131,7 @@ static void ufs_write_super(struct super_block *sb) struct ufs_super_block_third * usb3; unsigned flags; + lock_super(sb); lock_kernel(); UFSD("ENTER\n"); flags = UFS_SB(sb)->s_flags; @@ -1150,6 +1151,7 @@ static void ufs_write_super(struct super_block *sb) sb->s_dirt = 0; UFSD("EXIT\n"); unlock_kernel(); + unlock_super(sb); } static void ufs_put_super(struct super_block *sb) |