diff --git a/mm/slob.c b/mm/slob.c
index 17e8f8c..5ec1580 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -630,6 +630,10 @@
 	return 0;
 }
 
+void __kmem_cache_release(struct kmem_cache *c)
+{
+}
+
 int __kmem_cache_shrink(struct kmem_cache *d, bool deactivate)
 {
 	return 0;