[jdk8u-dev] RFR: 8214427: probable bug in logic of ConcurrentHashMap.addCount()

[tianshuang]

Hi,

I want to backport [JDK-8214427](https://bugs.openjdk.java.net/browse/JDK-8214427 <https://bugs.openjdk.java.net/browse/JDK-8214427>), it fixes the bug that MAX_RESIZERS in ConcurrentHashMap.addCount() does not take effect, original patch does not apply cleanly to 8u.

Original patch: https://github.com/openjdk/jdk/commit/8846159987f902bb6e2b966eb4656da4b6d9469d <https://github.com/openjdk/jdk/commit/8846159987f902bb6e2b966eb4656da4b6d9469d>

Webrev: https://openjdk.github.io/cr/?repo=jdk8u-dev&pr=18&range=00 <https://openjdk.github.io/cr/?repo=jdk8u-dev&pr=18&range=00>
PR: https://github.com/openjdk/jdk8u-dev/pull/18 <https://github.com/openjdk/jdk8u-dev/pull/18>

Thanks,
tianshuang