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SubjectRe: + schedule_on_each_cpu-use-preempt_disable.patch added to -mm tree

* akpm@osdl.org <akpm@osdl.org> wrote:

> - mutex_lock(&workqueue_mutex);
> + preempt_disable(); /* CPU hotplug */
> for_each_online_cpu(cpu) {
> INIT_WORK(per_cpu_ptr(works, cpu), func);
> __queue_work(per_cpu_ptr(keventd_wq->cpu_wq, cpu),
> per_cpu_ptr(works, cpu));
> }
> - mutex_unlock(&workqueue_mutex);
> + preempt_enable();

Why not cpu_hotplug_lock()?

Ingo
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