RFR: 8331539: [REDO] NMT: add/make a mandatory MEMFLAGS argument to family of os::reserve/commit/uncommit memory API [v2]

[Afshin Zafari]

On Fri, 24 May 2024 09:03:07 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

> Thank you for the in-depth explanation, I think I understand it. What was the fix for this issue?

As can be seen in `os_posix.cpp::chop_extra_memory`, the exceptional case (of releasing sub regions due to extra memory) is notified to `MemTracker` for handling it. The optional `bool extra_memory` arg of `MemTracker::record_virtual_memory_release()` is used for addressing the case.

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PR Comment: https://git.openjdk.org/jdk/pull/19343#issuecomment-2129155345