--- old/src/share/vm/gc/shared/vmGCOperations.hpp	2016-03-23 15:56:36.726082341 +0100
+++ new/src/share/vm/gc/shared/vmGCOperations.hpp	2016-03-23 15:56:36.591076613 +0100
@@ -27,7 +27,6 @@
 
 #include "gc/shared/collectedHeap.hpp"
 #include "gc/shared/genCollectedHeap.hpp"
-#include "gc/shared/referencePendingListLocker.hpp"
 #include "memory/heapInspection.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "runtime/handles.hpp"
@@ -70,9 +69,6 @@
 //
 
 class VM_GC_Operation: public VM_Operation {
- private:
-  ReferencePendingListLocker _pending_list_locker;
-
  protected:
   uint           _gc_count_before;         // gc count before acquiring PLL
   uint           _full_gc_count_before;    // full gc count before acquiring PLL
@@ -83,10 +79,6 @@
 
   virtual bool skip_operation() const;
 
-  // java.lang.ref.Reference support
-  void acquire_pending_list_lock();
-  void release_and_notify_pending_list_lock();
-
  public:
   VM_GC_Operation(uint gc_count_before,
                   GCCause::Cause _cause,