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slub: do not put a slab to cpu partial list when cpu_partial is 0

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In free path, we don't check number of cpu_partial, so one slab can
be linked in cpu partial list even if cpu_partial is 0. To prevent this,
we should check number of cpu_partial in put_cpu_partial().

Acked-by: Christoph Lameeter <cl@linux.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Joonsoo Kim 2013-06-19 15:33:55 +09:00 committed by Pekka Enberg
parent c17fd13ec0
commit 318df36e57
1 changed files with 3 additions and 0 deletions
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3
mm/slub.c
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@ -1954,6 +1954,9 @@ static void put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
int pages;
int pobjects;
if (!s->cpu_partial)
return;
do {
pages = 0;
pobjects = 0;