RFR: 8370254: Add VM_MEMORY_JAVA mmap tag to MacOS mmap calls [v6]

[Stefan Karlsson]

On Tue, 4 Nov 2025 19:07:32 GMT, Nityanand Rai <duke at openjdk.org> wrote:

>> Add VM_MEMORY_JAVA tag to mmap calls in os_bsd.cpp for better memory tracking of java process on macOs
>
> Nityanand Rai has updated the pull request incrementally with one additional commit since the last revision:
> 
>   minor refactoring to reduce code duplication

> I think the changes are minor to assert the tagging on allocation while we are doing that and do not require extra tests, please let me know if you still think otherwise.

I think otherwise. Please put the test somewhere else.

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Changes requested by stefank (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27868#pullrequestreview-3422524897