Merge tag 'gpio-v3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...

[pandora-kernel.git] / mm / slab.c

diff --git a/mm/slab.c b/mm/slab.c
index 1351725..a467b30 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -470,6 +470,8 @@ static struct kmem_cache kmem_cache_boot = {
        .name = "kmem_cache",
 };
 
+#define BAD_ALIEN_MAGIC 0x01020304ul
+
 static DEFINE_PER_CPU(struct delayed_work, slab_reap_work);
 
 static inline struct array_cache *cpu_cache_get(struct kmem_cache *cachep)
@@ -836,7 +838,7 @@ static int transfer_objects(struct array_cache *to,
 static inline struct alien_cache **alloc_alien_cache(int node,
                                                int limit, gfp_t gfp)
 {
-       return NULL;
+       return (struct alien_cache **)BAD_ALIEN_MAGIC;
 }
 
 static inline void free_alien_cache(struct alien_cache **ac_ptr)
@@ -1611,7 +1613,8 @@ slab_out_of_memory(struct kmem_cache *cachep, gfp_t gfpflags, int nodeid)
 }
 
 /*
- * Interface to system's page allocator. No need to hold the cache-lock.
+ * Interface to system's page allocator. No need to hold the
+ * kmem_cache_node ->list_lock.
  *
  * If we requested dmaable memory, we will get it. Even if we
  * did not request dmaable memory, we might get it, but that
@@ -1913,9 +1916,9 @@ static void slab_destroy_debugcheck(struct kmem_cache *cachep,
  * @cachep: cache pointer being destroyed
  * @page: page pointer being destroyed
  *
- * Destroy all the objs in a slab, and release the mem back to the system.
- * Before calling the slab must have been unlinked from the cache.  The
- * cache-lock is not held/needed.
+ * Destroy all the objs in a slab page, and release the mem back to the system.
+ * Before calling the slab page must have been unlinked from the cache. The
+ * kmem_cache_node ->list_lock is not held/needed.
  */
 static void slab_destroy(struct kmem_cache *cachep, struct page *page)
 {