--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.inline.hpp	Thu Mar 29 19:46:24 2012 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.inline.hpp	Wed Apr 25 10:23:12 2012 -0700
@@ -56,7 +56,6 @@
 }
 
 inline void HeapRegion::note_start_of_marking() {
-  init_top_at_conc_mark_count();
   _next_marked_bytes = 0;
   _next_top_at_mark_start = top();
 }