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slub: fix kmem_cache_shrink return value

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It is supposed to return 0 if the cache has no remaining objects and 1
otherwise, while currently it always returns 0.  Fix it.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vladimir Davydov 2015-02-12 14:59:44 -08:00 committed by Linus Torvalds
parent 832f37f5d5
commit ce3712d74d
1 changed files with 5 additions and 1 deletions
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6
mm/slub.c
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@ -3379,6 +3379,7 @@ int __kmem_cache_shrink(struct kmem_cache *s)
struct list_head discard;
struct list_head promote[SHRINK_PROMOTE_MAX];
unsigned long flags;
int ret = 0;
flush_all(s);
for_each_kmem_cache_node(s, node, n) {
@ -3425,9 +3426,12 @@ int __kmem_cache_shrink(struct kmem_cache *s)
/* Release empty slabs */
list_for_each_entry_safe(page, t, &discard, lru)
discard_slab(s, page);
if (slabs_node(s, node))
ret = 1;
}
return 0;
return ret;
}
static int slab_mem_going_offline_callback(void *arg)