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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2013-06-19 15:33:55 +0900
committerPekka Enberg <penberg@kernel.org>2013-07-07 18:46:30 +0300
commit318df36e57c0ca9f2146660d41ff28e8650af423 (patch)
tree6d6ad368eab1e67f2fd88ea92638e638c04e66d3
parentc17fd13ec0677e61f3692ecb9d4b21f79848fa04 (diff)
downloadlinux-318df36e57c0ca9f2146660d41ff28e8650af423.tar.bz2
slub: do not put a slab to cpu partial list when cpu_partial is 0
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>
-rw-r--r--mm/slub.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 5ee6c7cd9fc4..54cc4d544f3c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -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;