--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp	Wed Dec 21 07:53:53 2011 -0500
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp	Wed Dec 14 13:34:57 2011 -0800
@@ -558,11 +558,11 @@
 }
 
 void G1RemSet::scrub_par(BitMap* region_bm, BitMap* card_bm,
-                                int worker_num, int claim_val) {
+                                uint worker_num, int claim_val) {
   ScrubRSClosure scrub_cl(region_bm, card_bm);
   _g1->heap_region_par_iterate_chunked(&scrub_cl,
                                        worker_num,
-                                       (int) n_workers(),
+                                       n_workers(),
                                        claim_val);
 }