[jdk17u-dev] RFR: 8170817: G1: Returning MinTLABSize from unsafe_max_tlab_alloc causes TLAB flapping

[Xiaolong Peng]

Hi all,

This pull request contains a backport of commit [4c79e7d5](https://github.com/openjdk/jdk/commit/4c79e7d59caec01b4d2bdae2f7d25f1dd24ffbf6) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Ivan Walulya on 12 Oct 2023 and was reviewed by Thomas Schatzl and Albert Mingkun Yang.

Additional test:
- [x]  make test TEST=test/hotspot/jtreg/:tier2 CONF=linux-aarch64-server-fastdebug
There were two irrelevant failures, I have created bug for them https://bugs.openjdk.org/browse/JDK-8335127

Thanks!

-------------

Commit messages:
 - Backport 4c79e7d59caec01b4d2bdae2f7d25f1dd24ffbf6

Changes: https://git.openjdk.org/jdk17u-dev/pull/2639/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2639&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8170817
  Stats: 8 lines in 1 file changed: 5 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2639.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2639/head:pull/2639

PR: https://git.openjdk.org/jdk17u-dev/pull/2639