RFR: 8351661: NMT: VMATree should support separate call-stacks for reserve and commit operations [v3]

[Afshin Zafari]

On Tue, 18 Mar 2025 09:20:59 GMT, Afshin Zafari <azafari at openjdk.org> wrote:

>> In NMT detail mode, we need to have separate call-stacks for Reserve and Commit operations.
>> This PR adds a second stack to every node that will be used when committing (and uncommitting) the start node of a reserved region.
>
> Afshin Zafari has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review comments applied.

We should also re-think about the uncommit stacks. What is the expected?

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PR Comment: https://git.openjdk.org/jdk/pull/24028#issuecomment-2733522388