--- old/src/hotspot/share/gc/parallel/psMarkSweep.cpp	2018-10-18 14:45:41.645045956 +0200
+++ new/src/hotspot/share/gc/parallel/psMarkSweep.cpp	2018-10-18 14:45:41.323032131 +0200
@@ -37,6 +37,7 @@
 #include "gc/parallel/psScavenge.hpp"
 #include "gc/parallel/psYoungGen.hpp"
 #include "gc/serial/markSweep.hpp"
+#include "gc/shared/fill.hpp"
 #include "gc/shared/gcCause.hpp"
 #include "gc/shared/gcHeapSummary.hpp"
 #include "gc/shared/gcId.hpp"
@@ -449,10 +450,10 @@
   size_t const unused_words = pointer_delta(old_space->end(), unused_start);
 
   if (unused_words > 0) {
-    if (unused_words < CollectedHeap::min_fill_size()) {
+    if (unused_words < Fill::min_size()) {
       return false;  // If the old gen cannot be filled, must give up.
     }
-    CollectedHeap::fill_with_objects(unused_start, unused_words);
+    Fill::range(unused_start, unused_words);
   }
 
   // Take the live data from eden and set both top and end in the old gen to