*** old/src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp	Thu Dec  4 16:47:24 2014
--- new/src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp	Thu Dec  4 16:47:22 2014

*** 838,848 ****
--- 838,848 ----
  }
  
  HeapRegionRemSet::HeapRegionRemSet(G1BlockOffsetSharedArray* bosa,
                                     HeapRegion* hr)
    : _bosa(bosa),
!     _m(Mutex::leaf, FormatBuffer<128>("HeapRegionRemSet lock #%u", hr->hrm_index()), true, Monitor::_safepoint_check_never),
      _code_roots(), _other_regions(hr, &_m), _iter_state(Unclaimed), _iter_claimed(0) {
    reset_for_par_iteration();
  }
  
  void HeapRegionRemSet::setup_remset_size() {