diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 9972df4..1aa1737 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -539,7 +539,7 @@ static inline bool memcg_can_account_kmem(struct mem_cgroup *memcg)
 		 (memcg->kmem_accounted & (KMEM_ACCOUNTED_MASK));
 }
 
-struct ida cache_types;
+static struct ida cache_types;
 
 void memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *cachep)
 {
diff --git a/mm/slub.c b/mm/slub.c
index 63f096e..db5d41e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1706,7 +1706,7 @@ static inline void note_cmpxchg_failure(const char *n,
 	stat(s, CMPXCHG_DOUBLE_CPU_FAIL);
 }
 
-void init_kmem_cache_cpus(struct kmem_cache *s)
+static void init_kmem_cache_cpus(struct kmem_cache *s)
 {
 	int cpu;
 
@@ -1931,7 +1931,7 @@ static void unfreeze_partials(struct kmem_cache *s)
  * If we did not find a slot then simply move all the partials to the
  * per node partial list.
  */
-int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
+static int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
 {
 	struct page *oldpage;
 	int pages;