RFR: 8290177: Improve documentation in G1MMUTracker

[Ivan Walulya]

On Tue, 12 Jul 2022 14:48:09 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this change to improve the naming and documentation in `G1MMUTracker::when_sec`. Recently we have been looking at some young gen sizing issues (for another time), and it took some time to understand what the code does and how it works. This is kind of the result of this internal discussion, but I'm open to improve this further.
> 
> Testing: gha
> 
> Thanks,
>   Thomas

Lgtm!

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Marked as reviewed by iwalulya (Reviewer).

PR: https://git.openjdk.org/jdk/pull/9471