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authorMikulas Patocka <mpatocka@redhat.com>2009-06-22 05:12:23 -0400
committerAlasdair G Kergon <agk@redhat.com>2009-06-22 05:12:23 -0400
commitc927259e34e518d913d86f51c71b786a513f94d6 (patch)
tree0797e9e4689749ad70b6739f845374dc9c57c65d /drivers
parent647c7db14ef9cacc4ccb3683e206b61f0de6dc2b (diff)
dm delay: support barriers
Flush support for dm-delay target. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/dm-delay.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index 559dbb52bc85..8ad8a9044bbf 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -197,6 +197,7 @@ out:
197 mutex_init(&dc->timer_lock); 197 mutex_init(&dc->timer_lock);
198 atomic_set(&dc->may_delay, 1); 198 atomic_set(&dc->may_delay, 1);
199 199
200 ti->num_flush_requests = 1;
200 ti->private = dc; 201 ti->private = dc;
201 return 0; 202 return 0;
202 203
@@ -278,8 +279,9 @@ static int delay_map(struct dm_target *ti, struct bio *bio,
278 279
279 if ((bio_data_dir(bio) == WRITE) && (dc->dev_write)) { 280 if ((bio_data_dir(bio) == WRITE) && (dc->dev_write)) {
280 bio->bi_bdev = dc->dev_write->bdev; 281 bio->bi_bdev = dc->dev_write->bdev;
281 bio->bi_sector = dc->start_write + 282 if (bio_sectors(bio))
282 (bio->bi_sector - ti->begin); 283 bio->bi_sector = dc->start_write +
284 (bio->bi_sector - ti->begin);
283 285
284 return delay_bio(dc, dc->write_delay, bio); 286 return delay_bio(dc, dc->write_delay, bio);
285 } 287 }