diff --git a/mm/slab.h b/mm/slab.h
index 8184a7c..3045316 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -55,12 +55,12 @@
 struct mem_cgroup;
 #ifdef CONFIG_SLUB
 struct kmem_cache *
-__kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size,
-		   size_t align, unsigned long flags, void (*ctor)(void *));
+__kmem_cache_alias(const char *name, size_t size, size_t align,
+		   unsigned long flags, void (*ctor)(void *));
 #else
 static inline struct kmem_cache *
-__kmem_cache_alias(struct mem_cgroup *memcg, const char *name, size_t size,
-		   size_t align, unsigned long flags, void (*ctor)(void *))
+__kmem_cache_alias(const char *name, size_t size, size_t align,
+		   unsigned long flags, void (*ctor)(void *))
 { return NULL; }
 #endif
 
@@ -119,13 +119,6 @@
 	return !s->memcg_params || s->memcg_params->is_root_cache;
 }
 
-static inline bool cache_match_memcg(struct kmem_cache *cachep,
-				     struct mem_cgroup *memcg)
-{
-	return (is_root_cache(cachep) && !memcg) ||
-				(cachep->memcg_params->memcg == memcg);
-}
-
 static inline void memcg_bind_pages(struct kmem_cache *s, int order)
 {
 	if (!is_root_cache(s))
@@ -204,12 +197,6 @@
 	return true;
 }
 
-static inline bool cache_match_memcg(struct kmem_cache *cachep,
-				     struct mem_cgroup *memcg)
-{
-	return true;
-}
-
 static inline void memcg_bind_pages(struct kmem_cache *s, int order)
 {
 }