This is a note to let you know that I've just added the patch titled
block/mq-deadline: Set the fifo_time member also if inserting at head
to the 5.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
block-mq-deadline-set-the-fifo_time-member-also-if-i.patch
and it can be found in the queue-5.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fad78d1779995d356f0d4e575e3964e75d7aac68
Author: Bart Van Assche <bvanassche@xxxxxxx>
Date: Fri May 13 10:13:07 2022 -0700
block/mq-deadline: Set the fifo_time member also if inserting at head
[ Upstream commit 725f22a1477c9c15aa67ad3af96fe28ec4fe72d2 ]
Before commit 322cff70d46c the fifo_time member of requests on a dispatch
list was not used. Commit 322cff70d46c introduces code that reads the
fifo_time member of requests on dispatch lists. Hence this patch that sets
the fifo_time member when adding a request to a dispatch list.
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxx>
Cc: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Fixes: 322cff70d46c ("block/mq-deadline: Prioritize high-priority requests")
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Link: https://lore.kernel.org/r/20220513171307.32564-1-bvanassche@xxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index 3ed5eaf3446a..6ed602b2f80a 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -742,6 +742,7 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
if (at_head) {
list_add(&rq->queuelist, &per_prio->dispatch);
+ rq->fifo_time = jiffies;
} else {
deadline_add_rq_rb(per_prio, rq);
