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slub: Code optimization in get_partial_node()

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I find a way to reduce a variable in get_partial_node(). That is also helpful
for code understanding.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Alex,Shi 2011-09-07 10:26:36 +08:00 committed by Pekka Enberg
parent aca726a07a
commit 12d79634f8
1 changed files with 2 additions and 4 deletions
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6
mm/slub.c
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@ -1600,7 +1600,6 @@ static void *get_partial_node(struct kmem_cache *s,
{ {
struct page *page, *page2; struct page *page, *page2;
void *object = NULL; void *object = NULL;
int count = 0;
/* /*
* Racy check. If we mistakenly see no partial slabs then we * Racy check. If we mistakenly see no partial slabs then we
@ -1613,17 +1612,16 @@ static void *get_partial_node(struct kmem_cache *s,
spin_lock(&n->list_lock); spin_lock(&n->list_lock);
list_for_each_entry_safe(page, page2, &n->partial, lru) { list_for_each_entry_safe(page, page2, &n->partial, lru) {
void *t = acquire_slab(s, n, page, count == 0); void *t = acquire_slab(s, n, page, object == NULL);
int available; int available;
if (!t) if (!t)
break; break;
if (!count) { if (!object) {
c->page = page; c->page = page;
c->node = page_to_nid(page); c->node = page_to_nid(page);
stat(s, ALLOC_FROM_PARTIAL); stat(s, ALLOC_FROM_PARTIAL);
count++;
object = t; object = t;
available = page->objects - page->inuse; available = page->objects - page->inuse;
} else { } else {