Commit af4f6cab authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Mike Snitzer
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dm writecache: interrupt writeback if suspended 



If the DM device is suspended, interrupt the writeback sequence so
that there is no excessive suspend delay.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent ee50cc19

drivers/md/dm-writecache.c

+3 −2
Original line number Diff line number Diff line
@@ -1844,7 +1844,8 @@ static void writecache_writeback(struct work_struct *work) 


		n_walked++;

		if (unlikely(n_walked > WRITEBACK_LATENCY) &&

		    likely(!wc->writeback_all) && likely(!dm_suspended(wc->ti))) {

		    likely(!wc->writeback_all)) {

			if (likely(!dm_suspended(wc->ti)))

				queue_work(wc->writeback_wq, &wc->writeback_work);

			break;

		}