From: Pekka J Enberg <penberg@cs.helsinki.fi>
Subject: slub: look up object from the freelist once

We only need to look up object from c->page->freelist once in 
__slab_alloc().

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>

---
 mm/slub.c |    2 --
 1 file changed, 2 deletions(-)

Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c	2008-02-29 11:44:52.153297103 -0800
+++ linux-2.6/mm/slub.c	2008-02-29 11:45:00.681345009 -0800
@@ -1486,7 +1486,6 @@ load_freelist:
 	if (unlikely(SlabDebug(c->page)))
 		goto debug;
 
-	object = c->page->freelist;
 	c->freelist = object[c->offset];
 	c->page->inuse = s->objects;
 	c->page->freelist = NULL;
@@ -1542,7 +1541,6 @@ new_slab:
 
 	return NULL;
 debug:
-	object = c->page->freelist;
 	if (!alloc_debug_processing(s, c->page, object, addr))
 		goto another_slab;