Commit c927259e authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon

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
......@@ -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;
......@@ -278,8 +279,9 @@ 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;
bio->bi_sector = dc->start_write +
(bio->bi_sector - ti->begin);
if (bio_sectors(bio))
bio->bi_sector = dc->start_write +
(bio->bi_sector - ti->begin);
return delay_bio(dc, dc->write_delay, bio);
}
......
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