diff -r 611f6bfe7c30 -r ac6f7738a0ee src/hotspot/share/memory/resourceArea.cpp
--- a/src/hotspot/share/memory/resourceArea.cpp	Tue Nov 26 13:50:26 2019 +0100
+++ b/src/hotspot/share/memory/resourceArea.cpp	Tue Nov 26 09:27:16 2019 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -31,8 +31,11 @@
 
 void ResourceArea::bias_to(MEMFLAGS new_flags) {
   if (new_flags != _flags) {
+    size_t size = size_in_bytes();
+    MemTracker::record_arena_size_change(-ssize_t(size), _flags);
     MemTracker::record_arena_free(_flags);
     MemTracker::record_new_arena(new_flags);
+    MemTracker::record_arena_size_change(ssize_t(size), new_flags);
     _flags = new_flags;
   }
 }