block: Optimal I/O limit wrapper

Implement blk_limits_io_opt() and make blk_queue_io_opt() a wrapper
around it. DM needs this to avoid poking at the queue_limits directly.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index fde658ccbcec..e0efc1adcaff 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -336,7 +336,7 @@ static void stripe_io_hints(struct dm_target *ti,
         unsigned chunk_size = (sc->chunk_mask + 1) << 9;
 
         blk_limits_io_min(limits, chunk_size);
-        limits->io_opt = chunk_size * sc->stripes;
+        blk_limits_io_opt(limits, chunk_size * sc->stripes);
 }
 
 static struct target_type stripe_target = {