src/java.base/windows/classes/sun/nio/fs/WindowsChannelFactory.java

*** 72,81 ****
--- 72,82 ----
          boolean deleteOnClose;
          boolean sparse;
          boolean overlapped;
          boolean sync;
          boolean dsync;
+         boolean direct;
  
          // non-standard
          boolean shareRead = true;
          boolean shareWrite = true;
          boolean shareDelete = true;
*** 119,128 ****
--- 120,133 ----
                  }
                  if (ExtendedOptions.NOSHARE_DELETE.matches(option)) {
                      flags.shareDelete = false;
                      continue;
                  }
+                 if (ExtendedOptions.DIRECT.matches(option)) {
+                     flags.direct = true;
+                     continue;
+                 }
                  if (option == null)
                      throw new NullPointerException();
                  throw new UnsupportedOperationException();
              }
              return flags;
*** 159,169 ****
              throw new IllegalArgumentException("READ + APPEND not allowed");
          if (flags.append && flags.truncateExisting)
              throw new IllegalArgumentException("APPEND + TRUNCATE_EXISTING not allowed");
  
          FileDescriptor fdObj = open(pathForWindows, pathToCheck, flags, pSecurityDescriptor);
!         return FileChannelImpl.open(fdObj, pathForWindows, flags.read, flags.write, null);
      }
  
      /**
       * Open/creates file, returning AsynchronousFileChannel to access the file
       *
--- 164,174 ----
              throw new IllegalArgumentException("READ + APPEND not allowed");
          if (flags.append && flags.truncateExisting)
              throw new IllegalArgumentException("APPEND + TRUNCATE_EXISTING not allowed");
  
          FileDescriptor fdObj = open(pathForWindows, pathToCheck, flags, pSecurityDescriptor);
!         return FileChannelImpl.open(fdObj, pathForWindows, flags.read, flags.write, flags.direct, null);
      }
  
      /**
       * Open/creates file, returning AsynchronousFileChannel to access the file
       *
*** 271,280 ****
--- 276,287 ----
              dwFlagsAndAttributes |= FILE_FLAG_WRITE_THROUGH;
          if (flags.overlapped)
              dwFlagsAndAttributes |= FILE_FLAG_OVERLAPPED;
          if (flags.deleteOnClose)
              dwFlagsAndAttributes |= FILE_FLAG_DELETE_ON_CLOSE;
+         if (flags.direct)
+             dwFlagsAndAttributes |= FILE_FLAG_NO_BUFFERING;
  
          // NOFOLLOW_LINKS and NOFOLLOW_REPARSEPOINT mean open reparse point
          boolean okayToFollowLinks = true;
          if (dwCreationDisposition != CREATE_NEW &&
              (flags.noFollowLinks ||