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slub: look up object from the freelist once

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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>
This commit is contained in:
Pekka J Enberg 2008-03-01 13:43:54 -08:00 committed by Christoph Lameter
parent 6446faa2ff
commit 7693143481
1 changed files with 0 additions and 2 deletions
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2
mm/slub.c
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@ -1486,7 +1486,6 @@ static void *__slab_alloc(struct kmem_cache *s,
if (unlikely(SlabDebug(c->page))) if (unlikely(SlabDebug(c->page)))
goto debug; goto debug;
object = c->page->freelist;
c->freelist = object[c->offset]; c->freelist = object[c->offset];
c->page->inuse = s->objects; c->page->inuse = s->objects;
c->page->freelist = NULL; c->page->freelist = NULL;
@ -1542,7 +1541,6 @@ static void *__slab_alloc(struct kmem_cache *s,
return NULL; return NULL;
debug: debug:
object = c->page->freelist;
if (!alloc_debug_processing(s, c->page, object, addr)) if (!alloc_debug_processing(s, c->page, object, addr))
goto another_slab; goto another_slab;