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blk-mq-sched: bypass the scheduler for flushes entirely

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There's a weird inconsistency that flushes are mostly hidden from the
scheduler, but it needs to be aware of them in ->insert_requests().
Instead of having every scheduler call blk_mq_sched_bypass_insert(),
let's do it in the common framework.

Signed-off-by: Omar Sandoval <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Omar Sandoval 2017-02-02 15:42:39 -08:00 • committed by Jens Axboe
commit 0cacba6cf8
3 changed files with 23 additions and 6 deletions
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3
block/mq-deadline.c
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@ -395,9 +395,6 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
blk_mq_sched_request_inserted(rq);
if (blk_mq_sched_bypass_insert(hctx, rq))
return;
if (at_head || blk_rq_is_passthrough(rq)) {
if (at_head)
list_add(&rq->queuelist, &dd->dispatch);