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Commit c927259e authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon
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dm delay: support barriers 



Flush support for dm-delay target.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 647c7db1

drivers/md/dm-delay.c

+4 −2
Original line number Diff line number Diff line
@@ -197,6 +197,7 @@ static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
	mutex_init(&dc->timer_lock);

	atomic_set(&dc->may_delay, 1);



	ti->num_flush_requests = 1;

	ti->private = dc;

	return 0;
@@ -278,6 +279,7 @@ static int delay_map(struct dm_target *ti, struct bio *bio, 


	if ((bio_data_dir(bio) == WRITE) && (dc->dev_write)) {

		bio->bi_bdev = dc->dev_write->bdev;

		if (bio_sectors(bio))

			bio->bi_sector = dc->start_write +

					 (bio->bi_sector - ti->begin);