hg: jdk8u/jdk8u-dev/hotspot: 8248851: CMS: Missing memory fences between free chunk check and klass read

[gnu.andrew at redhat.com]

Changeset: 184f430ac1a2
Author:    fyang
Date:      2020-07-17 07:03 +0800
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/184f430ac1a2

8248851: CMS: Missing memory fences between free chunk check and klass read
Reviewed-by: aph, kbarrett, dholmes
Contributed-by: wangshuai94 at huawei.com

! src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp