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authorBart Van Assche <bart.vanassche@wdc.com>2017-08-09 11:32:16 -0700
committerMike Snitzer <snitzer@redhat.com>2017-08-28 10:01:33 -0400
commitd5c27f3ffbc2ee2d2f74ebfa1b2d789f67e9b3f1 (patch)
treeb86e98206172cb0b2b30bb13704248b6bbf990d6 /drivers/md
parent9157c8d3e2d318581ecc8bdf34367d57f19c5380 (diff)
downloadlinux-d5c27f3ffbc2ee2d2f74ebfa1b2d789f67e9b3f1.tar.bz2
dm rq: make dm-sq requeuing behavior consistent with dm-mq behavior
DM_MAPIO_DELAY_REQUEUE causes dm-mq to requeue after a delay but causes dm-sq to requeue immediately. Make the behavior of dm-sq consistent with that of dm-mq. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-rq.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index c6ebc5b1e00e..cbee09054d1e 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -237,14 +237,14 @@ static void dm_end_request(struct request *clone, blk_status_t error)
/*
* Requeue the original request of a clone.
*/
-static void dm_old_requeue_request(struct request *rq)
+static void dm_old_requeue_request(struct request *rq, unsigned long delay_ms)
{
struct request_queue *q = rq->q;
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
blk_requeue_request(q, rq);
- blk_run_queue_async(q);
+ blk_delay_queue(q, delay_ms);
spin_unlock_irqrestore(q->queue_lock, flags);
}
@@ -270,6 +270,7 @@ static void dm_requeue_original_request(struct dm_rq_target_io *tio, bool delay_
struct mapped_device *md = tio->md;
struct request *rq = tio->orig;
int rw = rq_data_dir(rq);
+ unsigned long delay_ms = delay_requeue ? 100 : 0;
rq_end_stats(md, rq);
if (tio->clone) {
@@ -278,9 +279,9 @@ static void dm_requeue_original_request(struct dm_rq_target_io *tio, bool delay_
}
if (!rq->q->mq_ops)
- dm_old_requeue_request(rq);
+ dm_old_requeue_request(rq, delay_ms);
else
- dm_mq_delay_requeue_request(rq, delay_requeue ? 100/*ms*/ : 0);
+ dm_mq_delay_requeue_request(rq, delay_ms);
rq_completed(md, rw, false);
}