mtd: blktrans: fix a race vs kthread_stop
There is small race window that could make kthread_stop hang forever. I found that while hacking the IR subsystem. Signed-off-by: Maxim Levitsky <maximlevisky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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@ -133,6 +133,10 @@ static int mtd_blktrans_thread(void *arg)
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if (!req && !(req = blk_fetch_request(rq))) {
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set_current_state(TASK_INTERRUPTIBLE);
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if (kthread_should_stop())
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set_current_state(TASK_RUNNING);
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spin_unlock_irq(rq->queue_lock);
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schedule();
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spin_lock_irq(rq->queue_lock);
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