--- old/src/share/vm/gc/g1/g1CollectedHeap.cpp	2015-11-16 16:53:01.863324036 +0100
+++ new/src/share/vm/gc/g1/g1CollectedHeap.cpp	2015-11-16 16:53:01.774321359 +0100
@@ -5635,6 +5635,14 @@
         cur->set_young_index_in_cset(-1);
       }
       cur->set_evacuation_failed(false);
+      // When moving a young gen region to old gen, we "allocate" that whole region
+      // there. This is in addition to any already evacuated objects. Notify the
+      // policy about that.
+      // Old gen regions do not cause an additional allocation: both the objects
+      // still in the region and the ones already moved are accounted for elsewhere.
+      if (cur->is_young()) {
+        policy->add_last_old_allocated_bytes(HeapRegion::GrainBytes);
+      }
       // The region is now considered to be old.
       cur->set_old();
       // Do some allocation statistics accounting. Regions that failed evacuation