diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index c8668d1..b427152 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -33,6 +33,7 @@
 	DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */
 	ORDER_FALLBACK,		/* Number of times fallback was necessary */
 	CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */
+	CMPXCHG_DOUBLE_FAIL,	/* Number of times that cmpxchg double did not match */
 	NR_SLUB_STAT_ITEMS };
 
 struct kmem_cache_cpu {