--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Wed Jan 14 14:12:55 2009 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Fri Jan 16 13:02:20 2009 -0500
@@ -2985,6 +2985,7 @@
   _collection_set = hr;
   _collection_set_size++;
   _collection_set_bytes_used_before += hr->used();
+  _g1->register_region_with_in_cset_fast_test(hr);
 }
 
 void