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

*** 1,7 ****
  /*
!  * Copyright (c) 2008, 2015, 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, 2017, 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
*** 124,133 ****
--- 124,139 ----
         UnixFileStoreAttributes attrs = readAttributes();
         return attrs.blockSize() * attrs.availableBlocks();
      }
  
      @Override
+     public long getBlockSize() throws IOException {
+        UnixFileStoreAttributes attrs = readAttributes();
+        return attrs.blockSize();
+     }
+ 
+     @Override
      public long getUnallocatedSpace() throws IOException {
          UnixFileStoreAttributes attrs = readAttributes();
          return attrs.blockSize() * attrs.freeBlocks();
      }