diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 25d0fb6443d1bea33eb6c51188c9391f6b5a12a8..b7b1fb6c8c21d4d4d1c6b7cc17f179e062dce94b 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -267,10 +267,6 @@ struct zs_pool {
 #endif
 };
 
-/*
- * A zspage's class index and fullness group
- * are encoded in its (first)page->mapping
- */
 #define FULLNESS_BITS	2
 #define CLASS_BITS	8
 #define ISOLATED_BITS	3