cgroup/cpuset: Fix violation of cpuset locking rule

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The cpuset fields that manage partition root state do not strictly
follow the cpuset locking rule that update to cpuset has to be done
with both the callback_lock and cpuset_mutex held. This is now fixed
by making sure that the locking rule is upheld.

Fixes: 3881b86128 ("cpuset: Add an error state to cpuset.sched.partition")
Fixes: 4b842da276 ("cpuset: Make CPU hotplug work with partition")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Waiman Long 2021-07-20 10:18:28 -04:00 • committed by Tejun Heo

parent 15d428e6fe

commit 6ba34d3c73

1 changed files with 35 additions and 23 deletions

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kernel/cgroup/cpuset.c

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