diff a/src/hotspot/share/gc/parallel/psCompactionManager.hpp b/src/hotspot/share/gc/parallel/psCompactionManager.hpp
--- a/src/hotspot/share/gc/parallel/psCompactionManager.hpp
+++ b/src/hotspot/share/gc/parallel/psCompactionManager.hpp
@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
@@ -48,20 +48,10 @@
   friend class MarkFromRootsTask;
   friend class UpdateDensePrefixAndCompactionTask;
 
  public:
 
-// ------------------------  Don't putback if not needed
-  // Actions that the compaction manager should take.
-  enum Action {
-    Update,
-    Copy,
-    UpdateAndCopy,
-    CopyAndUpdate,
-    NotValid
-  };
-// ------------------------  End don't putback if not needed
 
  private:
   // 32-bit:  4K * 8 = 32KiB; 64-bit:  8K * 16 = 128KiB
   #define QUEUE_SIZE (1 << NOT_LP64(12) LP64_ONLY(13))
   typedef OverflowTaskQueue<ObjArrayTask, mtGC, QUEUE_SIZE> ObjArrayTaskQueue;
@@ -93,12 +83,10 @@
 
   // Provides mutual exclusive access of _shadow_region_array.
   // See pop/push_shadow_region_mt_safe() below
   static Monitor*               _shadow_region_monitor;
 
-  Action _action;
-
   HeapWord* _last_query_beg;
   oop _last_query_obj;
   size_t _last_query_ret;
 
   static PSOldGen* old_gen()             { return _old_gen; }
@@ -136,13 +124,10 @@
     _last_query_beg = NULL;
     _last_query_obj = NULL;
     _last_query_ret = 0;
   }
 
-  Action action() { return _action; }
-  void set_action(Action v) { _action = v; }
-
   // Bitmap query support, cache last query and result
   HeapWord* last_query_begin() { return _last_query_beg; }
   oop last_query_object() { return _last_query_obj; }
   size_t last_query_return() { return _last_query_ret; }