[jdk8u-dev] RFR: 8278951: containers/cgroup/PlainRead.java fails on Ubuntu 21.10

[Severin Gehwolf]

On Fri, 4 Nov 2022 10:56:03 GMT, Jonathan Dowland <jdowland at openjdk.org> wrote:

> This is a backport of 8278951 to jdk8u-dev as part of the cgroups v2 backport initiative.
> 
> Dependent PRs are in use.
> 
> It was clean (modulo path shuffles). The use of `log_trace` needed adjusting for jdk8u-dev.

While this backport likely does no harm, `PlainRead.java` test mentioned in the bug got introduced with [JDK-8197408](https://bugs.openjdk.org/browse/JDK-8197408), which is *not* in 8u. We should add that first before adding a "fix" for that test ;-) Note: we seem to have most of the changes of JDK-8197408 already in 8u.

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PR: https://git.openjdk.org/jdk8u-dev/pull/155