[RFC,2/3] md/raid0: enable REQ_NOWAIT
diff mbox series

Message ID 159101503243.180989.945052901574296650.stgit@buzz
State New
Headers show
Series
  • block: allow REQ_NOWAIT to some bio-based/stacked devices
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Commit Message

Konstantin Khlebnikov June 1, 2020, 12:37 p.m. UTC
Set limits.nowait_requests = 1 before stacking limits.
Raid itself does not delay bio in raid0_make_request().

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
---
 drivers/md/raid0.c |    3 +++
 1 file changed, 3 insertions(+)

Patch
diff mbox series

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 322386ff5d22..e34292b05488 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -406,6 +406,9 @@  static int raid0_run(struct mddev *mddev)
 		blk_queue_io_opt(mddev->queue,
 				 (mddev->chunk_sectors << 9) * mddev->raid_disks);
 
+		/* raid0_make_request() does not delay requests */
+		mddev->queue->limits.nowait_requests = 1;
+
 		rdev_for_each(rdev, mddev) {
 			disk_stack_limits(mddev->gendisk, rdev->bdev,
 					  rdev->data_offset << 9);