*** old/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp	Fri Sep 13 16:49:48 2013
--- new/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp	Fri Sep 13 16:49:48 2013

*** 30,39 ****
--- 30,40 ----
  #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  
  #define VM_STRUCTS_G1(nonstatic_field, static_field)                          \
                                                                                \
    static_field(HeapRegion, GrainBytes,        size_t)                         \
+   static_field(HeapRegion, LogOfHRGrainBytes, int)                            \
                                                                                \
    nonstatic_field(HeapRegionSeq,   _regions, HeapRegion**)                    \
    nonstatic_field(HeapRegionSeq,   _length,  uint)                            \
                                                                                \
    nonstatic_field(G1CollectedHeap, _hrs,                HeapRegionSeq)        \