diff --git a/[refs] b/[refs]
index 599d5013ccff..cb2d4080883f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cfd348fd6e2a5dcba68f4195ca642602d3a33cc3
+refs/heads/master: 343b9019808eb4df2a1b4429a8b95d21bf45a9e9
diff --git a/trunk/Documentation/mutex-design.txt b/trunk/Documentation/mutex-design.txt
index 51f935191ae5..aa60d1f627e5 100644
--- a/trunk/Documentation/mutex-design.txt
+++ b/trunk/Documentation/mutex-design.txt
@@ -133,4 +133,6 @@ the APIs of 'struct mutex' have been streamlined:
  int  mutex_trylock(struct mutex *lock);
  void mutex_unlock(struct mutex *lock);
  int  mutex_is_locked(struct mutex *lock);
-
+ void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
+ int  mutex_lock_interruptible_nested(struct mutex *lock,
+                                      unsigned int subclass);