diff --git a/mm/slab.h b/mm/slab.h
index 7cc432969945..63fb4c00d529 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -323,6 +323,14 @@ static inline slab_flags_t kmem_cache_flags(unsigned int object_size,
 }
 #endif
 
+static inline bool is_kmalloc_cache(struct kmem_cache *s)
+{
+#ifndef CONFIG_SLOB
+	return (s->flags & SLAB_KMALLOC);
+#else
+	return false;
+#endif
+}
 
 /* Legal flag mask for kmem_cache_create(), for various configurations */
 #define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | \