diff -r 720b6a76dd9d -r f7a8920427a6 src/share/vm/gc_implementation/g1/heapRegion.hpp
--- a/src/share/vm/gc_implementation/g1/heapRegion.hpp	Wed Apr 18 07:21:15 2012 -0400
+++ b/src/share/vm/gc_implementation/g1/heapRegion.hpp	Wed Apr 18 13:39:55 2012 -0400
@@ -281,12 +281,8 @@
   size_t _prev_marked_bytes;    // Bytes known to be live via last completed marking.
   size_t _next_marked_bytes;    // Bytes known to be live via in-progress marking.
 
-  // See "sort_index" method.  -1 means is not in the array.
-  int _sort_index;
-
-  // <PREDICTION>
+  // The calculated GC efficiency of the region.
   double _gc_efficiency;
-  // </PREDICTION>
 
   enum YoungType {
     NotYoung,                   // a region is not young
@@ -629,16 +625,6 @@
   // last mark phase ended.
   bool is_marked() { return _prev_top_at_mark_start != bottom(); }
 
-  // If "is_marked()" is true, then this is the index of the region in
-  // an array constructed at the end of marking of the regions in a
-  // "desirability" order.
-  int sort_index() {
-    return _sort_index;
-  }
-  void set_sort_index(int i) {
-    _sort_index = i;
-  }
-
   void init_top_at_conc_mark_count() {
     _top_at_conc_mark_count = bottom();
   }