RFR: 8343191: Cgroup v1 subsystem fails to set subsystem path [v11]

[Sergey Chernyshev]

On Fri, 21 Feb 2025 20:05:07 GMT, Sergey Chernyshev <schernyshev at openjdk.org> wrote:

>> Good catch, but as long as cgp#nameCount may change in the loop, this exact patch i cannot take.
>
> How about this?
> 
> int currentNameCount = cgp.getNameCount();
> cgp = (currentNameCount > 1) ? cgp.subpath(1, currentNameCount) : Path.of("");

I tested the builds with the above change. It seems to be doing the thing. Please see the updated PR.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21808#discussion_r1968429793