Merge "kthread: Ensure task isn't preempted before dequeue in kthread_parkme"

{

	__set_current_state(TASK_PARKED);

	while (test_bit(KTHREAD_SHOULD_PARK, &self->flags)) {

		preempt_disable();

		if (!test_and_set_bit(KTHREAD_IS_PARKED, &self->flags))

			complete(&self->parked);

		schedule();

		schedule_preempt_disabled();

		preempt_enable();

		__set_current_state(TASK_PARKED);

	}

	clear_bit(KTHREAD_IS_PARKED, &self->flags);