--- old/share/gc/parallel/adjoiningVirtualSpaces.hpp	2018-06-12 04:14:34.635190793 -0700
+++ new/share/gc/parallel/adjoiningVirtualSpaces.hpp	2018-06-12 04:14:34.595190792 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, 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
@@ -75,6 +75,8 @@
 
   const size_t _alignment;
 
+  int _nvdimm_fd;
+
  public:
   // Allocates two virtual spaces that will be located at the
   // high and low ends.  Does no initialization.
@@ -110,6 +112,8 @@
   void initialize(size_t max_low_byte_size,
                   size_t init_low_byte_size,
                   size_t init_high_byte_size);
+  void setup_fd(int fd) {_nvdimm_fd = fd;   }
+  int nvdimm_fd() const {return _nvdimm_fd; }
 };
 
 #endif // SHARE_VM_GC_PARALLEL_ADJOININGVIRTUALSPACES_HPP