Use non atomic unlock
authorNick Piggin <nickpiggin@yahoo.com.au>
Tue, 8 Jan 2008 07:20:27 +0000 (23:20 -0800)
committerChristoph Lameter <christoph@stapp.engr.sgi.com>
Fri, 8 Feb 2008 01:47:42 +0000 (17:47 -0800)
Slub can use the non-atomic version to unlock because other flags will not
get modified with the lock held.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/slub.c

index ac836d3..bccfb6a 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1219,7 +1219,7 @@ static __always_inline void slab_lock(struct page *page)
 
 static __always_inline void slab_unlock(struct page *page)
 {
-       bit_spin_unlock(PG_locked, &page->flags);
+       __bit_spin_unlock(PG_locked, &page->flags);
 }
 
 static __always_inline int slab_trylock(struct page *page)