diff --git a/[refs] b/[refs]
index a742a27a8764..9d7ee3ddf2bf 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1bef7dc00caa7bcbff4fdb55e599e2591461fafa
+refs/heads/master: 4827bbb06e4b59922c2b9bfb13ad1bf936bdebe5
diff --git a/trunk/include/asm-i386/system.h b/trunk/include/asm-i386/system.h
index 609756c61676..d69ba937e092 100644
--- a/trunk/include/asm-i386/system.h
+++ b/trunk/include/asm-i386/system.h
@@ -214,11 +214,6 @@ static inline unsigned long get_limit(unsigned long segment)
  */
  
 
-/* 
- * Actually only lfence would be needed for mb() because all stores done 
- * by the kernel should be already ordered. But keep a full barrier for now. 
- */
-
 #define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
 #define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)