Commit 76931434 authored by Pekka J Enberg's avatar Pekka J Enberg Committed by Christoph Lameter
Browse files

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: default avatarPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
parent 6446faa2

mm/slub.c

+0 −2
Original line number Diff line number Diff line
@@ -1486,7 +1486,6 @@ static void *__slab_alloc(struct kmem_cache *s, 
	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 @@ static void *__slab_alloc(struct kmem_cache *s, 


	return NULL;

debug:

	object = c->page->freelist;

	if (!alloc_debug_processing(s, c->page, object, addr))

		goto another_slab;