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slub: Add lock release annotation 

The unfreeze_slab() releases page's PG_locked bit but was missing
proper annotation. The deactivate_slab() needs to be marked also
since it calls unfreeze_slab() without grabbing the lock.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Namhyung Kim 2010-09-29 21:02:14 +09:00 committed by Pekka Enberg
parent a5dd5c117c
commit 3478973ded
1 changed files with 2 additions and 0 deletions
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2
mm/slub.c
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@ -1446,6 +1446,7 @@ static struct page *get_partial(struct kmem_cache *s, gfp_t flags, int node)
* On exit the slab lock will have been dropped. * On exit the slab lock will have been dropped.
*/ */
static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail) static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
__releases(bitlock)
{ {
struct kmem_cache_node *n = get_node(s, page_to_nid(page)); struct kmem_cache_node *n = get_node(s, page_to_nid(page));
@ -1488,6 +1489,7 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
* Remove the cpu slab * Remove the cpu slab
*/ */
static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c) static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)
__releases(bitlock)
{ {
struct page *page = c->page; struct page *page = c->page;
int tail = 1; int tail = 1;