--- old/src/share/vm/memory/space.hpp	2014-11-19 16:45:21.735212801 +0100
+++ new/src/share/vm/memory/space.hpp	2014-11-19 16:45:21.623208238 +0100
@@ -70,15 +70,13 @@
   // Used in support of save_marks()
   HeapWord* _saved_mark_word;
 
-  MemRegionClosure* _preconsumptionDirtyCardClosure;
-
   // A sequential tasks done structure. This supports
   // parallel GC, where we have threads dynamically
   // claiming sub-tasks from a larger parallel task.
   SequentialSubTasksDone _par_seq_tasks;
 
   Space():
-    _bottom(NULL), _end(NULL), _preconsumptionDirtyCardClosure(NULL) { }
+    _bottom(NULL), _end(NULL) { }
 
  public:
   // Accessors
@@ -97,11 +95,8 @@
     return (HeapWord*)obj >= saved_mark_word();
   }
 
-  MemRegionClosure* preconsumptionDirtyCardClosure() const {
-    return _preconsumptionDirtyCardClosure;
-  }
-  void setPreconsumptionDirtyCardClosure(MemRegionClosure* cl) {
-    _preconsumptionDirtyCardClosure = cl;
+  virtual MemRegionClosure* preconsumptionDirtyCardClosure() const {
+    return NULL;
   }
 
   // Returns a subregion of the space containing only the allocated objects in