RFR: 8364254: Serial: Remove soft ref policy update in WhiteBox FullGC [v2]

Mon Aug 4 13:49:14 UTC 2025

> Simple removing Serial specific logic in `WB_FullGC`, because Serial full-gc handles white-box full-gc already.
> 
> Test: tier1-3

Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into sgc-whitebox
 - sgc-whitebox

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/26528/files
  - new: https://git.openjdk.org/jdk/pull/26528/files/d95ce7ed..7be7d3de

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26528&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26528&range=00-01

  Stats: 13614 lines in 375 files changed: 8956 ins; 3887 del; 771 mod
  Patch: https://git.openjdk.org/jdk/pull/26528.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26528/head:pull/26528

PR: https://git.openjdk.org/jdk/pull/26528