RFR: 8298293: NMT: should os::realloc() API take flags as arguments?

Fri Feb 3 23:15:30 UTC 2023

Please review this enhancement, which adds `assert` to make sure that we are not changing the NMT flags when calling `os::realloc()`

We also fix a bug, which the `assert` caught.

Passes Mach5 tier1,2,3,4,5

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Commit messages:
 - push NMT flags all the way down

Changes: https://git.openjdk.org/jdk/pull/12422/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12422&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298293
  Stats: 8 lines in 3 files changed: 2 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/12422.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12422/head:pull/12422

PR: https://git.openjdk.org/jdk/pull/12422