From: Pekka J Enberg <penberg@cs.helsinki.fi>
Date: Sat, 1 Mar 2008 21:43:54 +0000 (-0800)
Subject: slub: look up object from the freelist once
X-Git-Tag: v2.6.25-rc4~107^2~2
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=7693143481730686362cc6360e3d47c012d9b2c8;p=linux-2.6-omap-h63xx.git

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>
---

diff --git a/mm/slub.c b/mm/slub.c
index 10d546954ef..db8026ba049 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -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;