--- old/src/hotspot/share/runtime/mutexLocker.hpp	2019-01-15 17:45:50.146303599 -0500
+++ new/src/hotspot/share/runtime/mutexLocker.hpp	2019-01-15 17:45:49.850287965 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -76,16 +76,12 @@
                                                  // fore- & background GC threads.
 extern Monitor* STS_lock;                        // used for joining/leaving SuspendibleThreadSet.
 extern Monitor* FullGCCount_lock;                // in support of "concurrent" full gc
-extern Mutex*   SATB_Q_FL_lock;                  // Protects SATB Q
-                                                 // buffer free list.
 extern Monitor* SATB_Q_CBL_mon;                  // Protects SATB Q
                                                  // completed buffer queue.
 extern Mutex*   Shared_SATB_Q_lock;              // Lock protecting SATB
                                                  // queue shared by
                                                  // non-Java threads.
 
-extern Mutex*   DirtyCardQ_FL_lock;              // Protects dirty card Q
-                                                 // buffer free list.
 extern Monitor* DirtyCardQ_CBL_mon;              // Protects dirty card Q
                                                  // completed buffer queue.
 extern Mutex*   Shared_DirtyCardQ_lock;          // Lock protecting dirty card