diff --git a/[refs] b/[refs]
index 9e0a14031e31..54cd66b3d9ff 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9c4801cebc2add1fe514bc8eb201b16372eee11a
+refs/heads/master: 6fb43d7b50e49a36f8be3199141bec473e5ecb00
diff --git a/trunk/include/linux/sched.h b/trunk/include/linux/sched.h
index 785ec8465bd3..cfb680585ab8 100644
--- a/trunk/include/linux/sched.h
+++ b/trunk/include/linux/sched.h
@@ -1514,7 +1514,7 @@ extern struct mm_struct * mm_alloc(void);
 extern void FASTCALL(__mmdrop(struct mm_struct *));
 static inline void mmdrop(struct mm_struct * mm)
 {
-	if (atomic_dec_and_test(&mm->mm_count))
+	if (unlikely(atomic_dec_and_test(&mm->mm_count)))
 		__mmdrop(mm);
 }