->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>
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index e0a39f1f..a3f45fc 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -37,6 +37,7 @@
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 @@
clean:
sb->s_dirt = 0;
unlock_kernel();
+ unlock_super(sb);
}
static int sysv_remount(struct super_block *sb, int *flags, char *data)
