[jdk21u-dev] RFR: 8343191: Cgroup v1 subsystem fails to set subsystem path [v2]

[lingjun-cg]

> Almost clean backport of JDK-8343191

lingjun-cg has updated the pull request incrementally with four additional commits since the last revision:

 - Backport 97ec9d3e0a6e3455579b567e1f58026f5b168c09
 - Backport e579cca619147aa51563dc00f374e02db49e1238
 - Backport 9ca1004e76a614328cd2eb7546143839c4d2f810
 - Backport 46b3d1d8cfd03e01d993be19d725cdbcafef7865

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Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/2109/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/2109/files/cab93138..7d7bfb44

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2109&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2109&range=00-01

  Stats: 162 lines in 3 files changed: 159 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2109.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2109/head:pull/2109

PR: https://git.openjdk.org/jdk21u-dev/pull/2109