--- old/src/share/vm/gc/g1/g1CollectedHeap.hpp	2016-06-28 14:13:04.424406143 +0200
+++ new/src/share/vm/gc/g1/g1CollectedHeap.hpp	2016-06-28 14:13:04.332403371 +0200
@@ -1205,10 +1205,10 @@
   void collection_set_iterate(HeapRegionClosure* blk);
 
   // Iterate over the regions (if any) in the current collection set. Starts the
-  // iteration over the entire collection set so that a given worker id over the
-  // set of 0..active_workers-1 are distributed across the set of collection set
-  // regions.
-  void collection_set_iterate_from(HeapRegionClosure *blk, uint worker_id, uint active_workers);
+  // iteration over the entire collection set so that the start regions of a given
+  // worker id over the set active_workers are evenly spread across the set of
+  // collection set regions.
+  void collection_set_iterate_from(HeapRegionClosure *blk, uint worker_id);
 
   HeapRegion* next_compaction_region(const HeapRegion* from) const;