->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/jffs2/super.c b/fs/jffs2/super.c
index a80a50e..f7bfd3a 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -56,15 +56,18 @@
static void jffs2_write_super(struct super_block *sb)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+
+ lock_super(sb);
sb->s_dirt = 0;
- if (sb->s_flags & MS_RDONLY)
- return;
+ if (!(sb->s_flags & MS_RDONLY)) {
+ D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
+ jffs2_garbage_collect_trigger(c);
+ jffs2_erase_pending_blocks(c, 0);
+ jffs2_flush_wbuf_gc(c, 0);
+ }
- D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
- jffs2_garbage_collect_trigger(c);
- jffs2_erase_pending_blocks(c, 0);
- jffs2_flush_wbuf_gc(c, 0);
+ unlock_super(sb);
}
static int jffs2_sync_fs(struct super_block *sb, int wait)