From 37314b3b0191b2e9c6cac8ffe9a9486e4a6fca40 Mon Sep 17 00:00:00 2001
From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Mon, 7 Jan 2008 23:20:27 -0800
Subject: [PATCH] Use non atomic unlock

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 |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c	2008-02-07 16:30:06.991458833 -0800
+++ linux-2.6/mm/slub.c	2008-02-07 16:30:22.803520618 -0800
@@ -1219,7 +1219,7 @@ static __always_inline void slab_lock(st
 
 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)