--- old/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp	2019-02-20 10:41:18.483042897 +0100
+++ new/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp	2019-02-20 10:41:18.222034924 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -106,12 +106,12 @@
   delete[] _oops_into_optional_regions;
 }
 
-size_t G1ParScanThreadState::lab_waste() const {
-  return _plab_allocator->waste() * HeapWordSize;
+size_t G1ParScanThreadState::lab_waste_words() const {
+  return _plab_allocator->waste();
 }
 
-size_t G1ParScanThreadState::lab_undo_waste() const {
-  return _plab_allocator->undo_waste() * HeapWordSize;
+size_t G1ParScanThreadState::lab_undo_waste_words() const {
+  return _plab_allocator->undo_waste();
 }
 
 #ifdef ASSERT