[11u] RFR 8265231: (fc) ReadDirect and WriteDirect tests fail after fix for JDK-8264821

[Hohensee, Paul]

Lgtm.

Thanks,
Paul

-----Original Message-----
From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.java.net> on behalf of Zhengyu Gu <zgu at redhat.com>
Date: Monday, May 24, 2021 at 6:57 AM
To: "jdk-updates-dev at openjdk.java.net" <jdk-updates-dev at openjdk.java.net>
Subject: [11u] RFR 8265231: (fc) ReadDirect and WriteDirect tests fail after fix for JDK-8264821

I would like to backport this patch to 11u for parity with Oracle 11.0.13.

The original bug: https://bugs.openjdk.java.net/browse/JDK-8265231
The original patch: https://github.com/openjdk/jdk/commit/d1b28e7a

The original patch does not apply cleanly, due to JDK-8262465 11u
backport diverged from original patch, and preserved
isDirectIOSupportedByFS check.

11u webrev: http://cr.openjdk.java.net/~zgu/JDK-8265231-11u/webrev.00/


Test:
   DirectIOTest.java passed on Linux x86_64

Thanks,

-Zhengyu