--- /dev/null	2017-04-27 11:02:11.338611058 -0700
+++ new/test/java/nio/channels/FileChannel/directio/ReadDirect.java	2017-08-09 14:53:28.435811194 -0700
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+ * @bug 8164900
+ * @summary Test read method of FileChannel with DirectIO
+ */
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.channels.*;
+import java.nio.channels.FileChannel;
+import java.nio.file.Paths;
+import java.nio.file.Path;
+import java.nio.file.Files;
+import java.nio.file.FileStore;
+import com.sun.nio.file.ExtendedOpenOption;
+
+public class ReadDirect {
+
+    private static PrintStream err = System.err;
+
+    private static void testRead1() throws Exception {
+        StringBuffer sb = new StringBuffer();
+        sb.setLength(2);
+
+        int charsPerGroup = 4096;
+        Path p = Files.createTempFile(Paths.get(
+                System.getProperty("test.dir", ".")), "test", null);
+        initTestFile(p, charsPerGroup);
+        FileChannel c = FileChannel.open(p, ExtendedOpenOption.DIRECT);
+        FileStore fs = Files.getFileStore(p);
+        int alignment = (int)fs.getBlockSize();
+
+        for (int x=0; x<100; x++) {
+            long offset = x * charsPerGroup;
+            long expectedResult = offset / charsPerGroup;
+            ByteBuffer block = ByteBuffer.allocateDirect(charsPerGroup
+                    + alignment - 1).alignedSlice(alignment);
+            c.read(block);
+
+            for (int i=0; i<2; i++) {
+                byte aByte = block.get(i);
+                sb.setCharAt(i, (char)aByte);
+            }
+            int result = Integer.parseInt(sb.toString());
+            if (result != expectedResult) {
+                err.println("I expected "+expectedResult);
+                err.println("I got "+ result);
+                throw new Exception("Read test failed");
+            }
+        }
+        c.close();
+        Files.delete(p);
+    }
+
+    private static void testRead2() throws Exception {
+        int charsPerGroup = 4000;
+        Path p = Files.createTempFile(Paths.get(
+                System.getProperty("test.dir", ".")), "test", null);
+        OutputStream fos = Files.newOutputStream(p);
+        fos.write(new byte[charsPerGroup]);
+        fos.close();
+
+        FileChannel c = FileChannel.open(p, ExtendedOpenOption.DIRECT);
+        FileStore fs = Files.getFileStore(p);
+        int alignment = (int)fs.getBlockSize();
+
+        ByteBuffer block = ByteBuffer.allocate(charsPerGroup);
+        try {
+            c.read(block);
+            throw new RuntimeException("Expected exception not thrown");
+        } catch (IOException e) {
+            if (!e.getMessage().contains("Number of remaining bytes is "
+                                         + "not a multiple of the block size"))
+                throw new Exception("Read test failed");
+        } finally {
+            c.close();
+            Files.delete(p);
+        }
+    }
+
+
+    public static void main(String[] args) throws Exception {
+        testRead1();
+        testRead2();
+    }
+
+    private static void initTestFile(Path p, int charsPerGroup)
+            throws Exception {
+        OutputStream fos = Files.newOutputStream(p);
+        BufferedWriter awriter
+            = new BufferedWriter(new OutputStreamWriter(fos, "8859_1"));
+
+        for(int i=0; i<100; i++) {
+            String number = new Integer(i).toString();
+            for (int h=0; h<2-number.length(); h++)
+                awriter.write("0");
+            awriter.write(""+i);
+            for (int j=0; j < (charsPerGroup - 2); j++)
+                awriter.write("0");
+        }
+       awriter.flush();
+       awriter.close();
+    }
+}