[jdk11u-dev] RFR: 8237479: 8230305 causes slowdebug build failure

[Zhengyu Gu]

A clean, followup (JDK-8230305) backport for Cgroup v2 support.

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/840

Commit messages:
 - Backport 4ca06995855b5c974321d7b3622d661b8d27ba76

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/864/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=864&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8237479
  Stats: 14 lines in 1 file changed: 0 ins; 0 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/864.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/864/head:pull/864

PR: https://git.openjdk.java.net/jdk11u-dev/pull/864