--- old/src/hotspot/share/jfr/leakprofiler/chains/bfsClosure.cpp	2020-01-15 20:36:30.573462689 -0800
+++ new/src/hotspot/share/jfr/leakprofiler/chains/bfsClosure.cpp	2020-01-15 20:36:30.265462700 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2020, 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
--- old/src/hotspot/share/jfr/leakprofiler/chains/dfsClosure.cpp	2020-01-15 20:36:31.497462657 -0800
+++ new/src/hotspot/share/jfr/leakprofiler/chains/dfsClosure.cpp	2020-01-15 20:36:31.177462668 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2020, 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
--- old/src/hotspot/share/jfr/leakprofiler/chains/edgeStore.cpp	2020-01-15 20:36:32.477462623 -0800
+++ new/src/hotspot/share/jfr/leakprofiler/chains/edgeStore.cpp	2020-01-15 20:36:32.161462634 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2020, 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
--- old/src/hotspot/share/jfr/leakprofiler/chains/objectSampleMarker.hpp	2020-01-15 20:36:33.449462589 -0800
+++ new/src/hotspot/share/jfr/leakprofiler/chains/objectSampleMarker.hpp	2020-01-15 20:36:33.169462599 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2020, 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
@@ -67,10 +67,8 @@
     assert(obj != NULL, "invariant");
     // save the original markWord
     _store->push(ObjectSampleMarkWord(obj, obj->mark()));
-    // now we will "poison" the mark word of the sample object
-    // to marked.
-    // This will be used to quickly identify sample objects
-    // during the reachability search from gc roots.
+    // now we will set the mark word to "marked" in order to quickly
+    // identify sample objects during the reachability search from gc roots.
     assert(!obj->mark().is_marked(), "should only mark an object once");
     obj->set_mark(markWord::prototype().set_marked());
     assert(obj->mark().is_marked(), "invariant");
--- old/src/hotspot/share/jfr/leakprofiler/checkpoint/eventEmitter.cpp	2020-01-15 20:36:34.453462554 -0800
+++ new/src/hotspot/share/jfr/leakprofiler/checkpoint/eventEmitter.cpp	2020-01-15 20:36:34.137462565 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2020, 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
--- old/src/hotspot/share/oops/markWord.hpp	2020-01-15 20:36:35.493462518 -0800
+++ new/src/hotspot/share/oops/markWord.hpp	2020-01-15 20:36:35.173462529 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2020, 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
@@ -83,8 +83,7 @@
 //    [ptr             | 00]  locked             ptr points to real header on stack
 //    [header      | 0 | 01]  unlocked           regular object header
 //    [ptr             | 10]  monitor            inflated lock (header is wapped out)
-//    [ptr             | 11]  marked             used by markSweep to mark an object
-//                                               not valid at any other time
+//    [ptr             | 11]  marked             used to mark an object
 //
 //    We assume that stack/thread pointers have the lowest two bits cleared.