cgroup/cpuset: Use WRITE_ONCE() for shared prs_err updates

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cpuset_partition_show() reads cs->prs_err without cpuset_mutex using
READ_ONCE(). The field is documented as not lock protected, but several
updates to live cpusets still use plain stores.

Convert the remaining prs_err stores on live cpusets to WRITE_ONCE().

Fixes: 0c7f293efc ("cgroup/cpuset: Add cpuset.cpus.exclusive.effective for v2")
Assisted-by: LLM
Signed-off-by: Guopeng Zhang <zhangguopeng@kylinos.cn>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Guopeng Zhang 2026-08-10 17:55:59 +08:00 • committed by Tejun Heo

parent 77bc7e952f

commit 26d3a59e02

1 changed files with 13 additions and 11 deletions

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kernel/cgroup/cpuset.c

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