--- old/src/share/vm/gc/shared/cardTableModRefBS.cpp	2015-05-20 11:02:01.103286976 +0200
+++ new/src/share/vm/gc/shared/cardTableModRefBS.cpp	2015-05-20 11:02:00.963282245 +0200
@@ -452,7 +452,7 @@
     } else {
       // clear_cl finds contiguous dirty ranges of cards to process and clear.
 
-      // This is the single-threaded version.
+      // This is the single-threaded version used by DefNew.
       const bool parallel = false;
 
       DirtyCardToOopClosure* dcto_cl = sp->new_dcto_cl(cl, precision(), cl->gen_boundary(), parallel);