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Commit 12aebf3e authored by Maxim Levitsky's avatar Maxim Levitsky Committed by David Woodhouse
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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: default avatarMaxim Levitsky <maximlevisky@gmail.com>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 480792b7

drivers/mtd/mtd_blkdevs.c

+4 −0
Original line number Diff line number Diff line
@@ -133,6 +133,10 @@ static int mtd_blktrans_thread(void *arg) 


		if (!req && !(req = blk_fetch_request(rq))) {

			set_current_state(TASK_INTERRUPTIBLE);



			if (kthread_should_stop())

				set_current_state(TASK_RUNNING);



			spin_unlock_irq(rq->queue_lock);

			schedule();

			spin_lock_irq(rq->queue_lock);