src/java.base/unix/classes/sun/nio/fs/UnixFileSystemProvider.java

8213406: (fs) More than one instance of built-in FileSystem observed in heap
Reviewed-by: alanb, cushon, weijun

*** 1,7 ****
  /*
!  * Copyright (c) 2008, 2013, 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.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2008, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 54,63 ****
--- 54,67 ----
      public UnixFileSystemProvider() {
          String userDir = System.getProperty(USER_DIR);
          theFileSystem = newFileSystem(userDir);
      }
  
+     UnixFileSystem theFileSystem() {
+         return theFileSystem;
+     }
+ 
      /**
       * Constructs a new file system using the given default directory.
       */
      abstract UnixFileSystem newFileSystem(String dir);