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authorChristoph Hellwig <hch@lst.de>2009-05-11 23:35:03 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:09 -0400
commitebc1ac164560a241d9bf1b7519062910c3f90a01 (patch)
treedb17fd3043b15f8269cce2c2d00213814022fc30 /fs/sysv
parent01ba687577647beef6c5f2ea59bfb56fac9fcde2 (diff)
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->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/sysv')
-rw-r--r--fs/sysv/inode.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index e0a39f1fb88..a3f45fc626a 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -37,6 +37,7 @@ static void sysv_write_super(struct super_block *sb)
struct sysv_sb_info *sbi = SYSV_SB(sb);
unsigned long time = get_seconds(), old_time;
+ lock_super(sb);
lock_kernel();
if (sb->s_flags & MS_RDONLY)
goto clean;
@@ -56,6 +57,7 @@ static void sysv_write_super(struct super_block *sb)
clean:
sb->s_dirt = 0;
unlock_kernel();
+ unlock_super(sb);
}
static int sysv_remount(struct super_block *sb, int *flags, char *data)