--- old/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp	2015-02-26 21:09:33.800283470 +0300
+++ new/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp	2015-02-26 21:09:33.724282215 +0300
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2015, 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
@@ -57,6 +57,9 @@
  public:
   MemRegion reserved() { return _storage.reserved(); }
 
+  size_t reserved_size() { return _storage.reserved_size(); }
+  size_t committed_size() { return _storage.committed_size(); }
+
   void set_mapping_changed_listener(G1MappingChangedListener* listener) { _listener = listener; }
 
   virtual ~G1RegionToSpaceMapper() {