Waiman Long 99fe36ba6f
cgroup/cpuset: Improve temporary cpumasks handling ...
The limitation that update_parent_subparts_cpumask() can only use
addmask & delmask in the given tmp cpumasks is fragile and may lead to
unexpected error.
Fix this problem by allocating/freeing a struct tmpmasks in
update_cpumask() to avoid reusing the cpumasks in trial_cs.
With this change, we can move the update_tasks_cpumask() for the
parent and update_sibling_cpumasks() for the sibling to inside
update_parent_subparts_cpumask().
Signed-off-by: Waiman Long <longman@redhat.com >
Signed-off-by: Tejun Heo <tj@kernel.org >
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