From ebc1ac164560a241d9bf1b7519062910c3f90a01 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 11 May 2009 23:35:03 +0200 Subject: ->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> --- fs/exofs/super.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/exofs') diff --git a/fs/exofs/super.c b/fs/exofs/super.c index cd1f8b18a218..49e16af4e619 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -214,6 +214,7 @@ static void exofs_write_super(struct super_block *sb) return; } + lock_super(sb); lock_kernel(); sbi = sb->s_fs_info; fscb->s_nextid = cpu_to_le64(sbi->s_nextid); @@ -246,6 +247,7 @@ out: if (or) osd_end_request(or); unlock_kernel(); + unlock_super(sb); kfree(fscb); } -- cgit v1.2.3