[jdk21u-dev] RFR: 8315031: YoungPLABSize and OldPLABSize not aligned by ObjectAlignmentInBytes

[Liang Mao]

Clean backport of YoungPLABSize and OldPLABSize not aligned by ObjectAlignmentInBytes.

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Commit messages:
 - Backport 060db1b2a2d0946327e47a6c2a380c9fb5593b01

Changes: https://git.openjdk.org/jdk21u-dev/pull/646/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=646&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315031
  Stats: 10 lines in 2 files changed: 9 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/646.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/646/head:pull/646

PR: https://git.openjdk.org/jdk21u-dev/pull/646