dm-stripe: Enable atomic writes

Set feature flag DM_TARGET_ATOMIC_WRITES.

Similar to md raid0, the chunk size set in stripe_io_hints() limits the
atomic write unit max.

Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 4112071de0be0c17d70ad10b0da237bd825f1df9..3786ac67cefe6ea878b1810cc800633db3daa6f0 100644 (file)
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -465,8 +465,9 @@ static void stripe_io_hints(struct dm_target *ti,
 
 static struct target_type stripe_target = {
        .name   = "striped",
-       .version = {1, 6, 0},
-       .features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_NOWAIT,
+       .version = {1, 7, 0},
+       .features = DM_TARGET_PASSES_INTEGRITY | DM_TARGET_NOWAIT |
+                   DM_TARGET_ATOMIC_WRITES,
        .module = THIS_MODULE,
        .ctr    = stripe_ctr,
        .dtr    = stripe_dtr,