Reduce the requeue delay in dm_requeue_original_request() from 5s
to 0.5s to avoid that this delay slows down failover or failback.
Increase the requeue delay in dm_mq_queue_rq() from 0.1s to 0.5s
to reduce the system load if immediate requeuing has been requested
by the dm driver.
Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Cc: Hannes Reinecke <h...@suse.com>
Cc: Christoph Hellwig <h...@lst.de>
---
drivers/md/dm-rq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 0b081d170087..c53debdcd7dc 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -280,7 +280,7 @@ static void dm_requeue_original_request(struct
dm_rq_target_io *tio, bool delay_
if (!rq->q->mq_ops)
dm_old_requeue_request(rq);
else
- dm_mq_delay_requeue_request(rq, delay_requeue ? 5000 : 0);
+ dm_mq_delay_requeue_request(rq, delay_requeue ? 500/*ms*/ : 0);
rq_completed(md, rw, false);
}
@@ -755,7 +755,7 @@ static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
/* Undo dm_start_request() before requeuing */
rq_end_stats(md, rq);
rq_completed(md, rq_data_dir(rq), false);
- blk_mq_delay_run_hw_queue(hctx, 100/*ms*/);
+ blk_mq_delay_run_hw_queue(hctx, 500/*ms*/);
return BLK_MQ_RQ_QUEUE_BUSY;
}
--
2.12.2
--
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