git: openjdk/jdk21u: master: 8314120: Add tests for FileDescriptor.sync

[Aleksey Shipilev]

Changeset: e22d333f
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2023-10-10 07:16:42 +0000
URL:       https://git.openjdk.org/jdk21u/commit/e22d333febe9edbb961fee9b51759d4cd28684fd

8314120: Add tests for FileDescriptor.sync

Backport-of: 2e8a0ab27227b2e06e2ece3776f66ff0932ef353

+ test/jdk/java/io/FileDescriptor/Sync.java
+ test/micro/org/openjdk/bench/java/io/FileDescriptorSync.java