[jdk21u-dev] RFR: 8335882: platform/cgroup/TestSystemSettings.java fails on Alpine Linux [v2]

[Jan Kratochvil]

> A patch 4 of 7 for: [[21u] Backport intention of 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected](https://mail.openjdk.org/pipermail/jdk-updates-dev/2025-April/043206.html)
> 
> It has a patch dependency on PR 3 of 7: https://github.com/openjdk/jdk21u-dev/pull/1661

Jan Kratochvil has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:

 - 8335882: platform/cgroup/TestSystemSettings.java fails on Alpine Linux
   
   Reviewed-by: stuefe, mbaesken
 - Merge branch 'devmaster' into devmaster-cgroup2reduced123-conflict
 - 8261242: [Linux] OSContainer::is_containerized() returns true when run outside a container
   
   Reviewed-by: stuefe, iklam
 - src/java.base/linux/native/libjava/CgroupMetrics.c:42:(.text+0x11): undefined reference to `JVM_IsContainerized'
    - a patch by Yuri Nesterenko
 - 8333326: Linux Alpine build fails after 8302744
   
   Reviewed-by: sgehwolf, clanger, stuefe
 - 8302744: Refactor Hotspot container detection code
   
   Reviewed-by: jsjolen, stuefe

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

Changes: https://git.openjdk.org/jdk21u-dev/pull/1869/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1869&range=01
  Stats: 411 lines in 20 files changed: 306 ins; 78 del; 27 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1869.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1869/head:pull/1869

PR: https://git.openjdk.org/jdk21u-dev/pull/1869