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Commit 3478973d authored by Namhyung Kim's avatar Namhyung Kim Committed by Pekka Enberg
Browse files

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: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarNamhyung Kim <namhyung@gmail.com>
Signed-off-by: default avatarPekka Enberg <penberg@kernel.org>
parent a5dd5c11

mm/slub.c

+2 −0
Original line number Diff line number Diff line
@@ -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.

 */

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));
@@ -1488,6 +1489,7 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail) 
 * Remove the cpu slab

 */

static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)

	__releases(bitlock)

{

	struct page *page = c->page;

	int tail = 1;