diff --git a/mm/slab_common.c b/mm/slab_common.c
index 2a3f5ff..e03dd6f 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -811,7 +811,7 @@
 #define SLABINFO_RIGHTS S_IRUSR
 #endif
 
-void print_slabinfo_header(struct seq_file *m)
+static void print_slabinfo_header(struct seq_file *m)
 {
 	/*
 	 * Output format version, so at least we can change it
@@ -876,7 +876,7 @@
 	}
 }
 
-int cache_show(struct kmem_cache *s, struct seq_file *m)
+static void cache_show(struct kmem_cache *s, struct seq_file *m)
 {
 	struct slabinfo sinfo;
 
@@ -895,7 +895,6 @@
 		   sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail);
 	slabinfo_show_stats(m, s);
 	seq_putc(m, '\n');
-	return 0;
 }
 
 static int slab_show(struct seq_file *m, void *p)
@@ -904,11 +903,25 @@
 
 	if (p == slab_caches.next)
 		print_slabinfo_header(m);
-	if (!is_root_cache(s))
-		return 0;
-	return cache_show(s, m);
+	if (is_root_cache(s))
+		cache_show(s, m);
+	return 0;
 }
 
+#ifdef CONFIG_MEMCG_KMEM
+int memcg_slab_show(struct seq_file *m, void *p)
+{
+	struct kmem_cache *s = list_entry(p, struct kmem_cache, list);
+	struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
+
+	if (p == slab_caches.next)
+		print_slabinfo_header(m);
+	if (!is_root_cache(s) && s->memcg_params->memcg == memcg)
+		cache_show(s, m);
+	return 0;
+}
+#endif
+
 /*
  * slabinfo_op - iterator that generates /proc/slabinfo
  *