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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-12 22:19:28 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-12 22:19:28 +0900
commit3dc329baa2ed1740036183041cefaf8ceb714038 (patch)
treebddec4d560f8f9775d2ad5bca484da9d0f11bbb6
parent03d3602a833715f83ea53b9feb078b9c4c5f6c1a (diff)
parent210ed9defffca13b909f040d7338d8062e5594a3 (diff)
Merge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
Pull SLAB fix from Pekka Enberg: "This contains a lockdep false positive fix from Jiri Kosina I missed from the previous pull request." * 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: mm, slab: release slab_mutex earlier in kmem_cache_destroy()
-rw-r--r--mm/slab_common.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 9c217255ac4..069a24e6440 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -168,6 +168,7 @@ void kmem_cache_destroy(struct kmem_cache *s)
list_del(&s->list);
if (!__kmem_cache_shutdown(s)) {
+ mutex_unlock(&slab_mutex);
if (s->flags & SLAB_DESTROY_BY_RCU)
rcu_barrier();
@@ -175,12 +176,14 @@ void kmem_cache_destroy(struct kmem_cache *s)
kmem_cache_free(kmem_cache, s);
} else {
list_add(&s->list, &slab_caches);
+ mutex_unlock(&slab_mutex);
printk(KERN_ERR "kmem_cache_destroy %s: Slab cache still has objects\n",
s->name);
dump_stack();
}
+ } else {
+ mutex_unlock(&slab_mutex);
}
- mutex_unlock(&slab_mutex);
put_online_cpus();
}
EXPORT_SYMBOL(kmem_cache_destroy);