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blkcg: consolidate bio_issue_init to be a part of core

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bio_issue_init among other things initializes the timestamp for an IO.
Rather than have this logic handled by policies, this consolidates it to
be on the init paths (normal, clone, bounce clone).

Signed-off-by: Dennis Zhou <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Reviewed-by: Liu Bo <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Dennis Zhou (Facebook) 2018-09-11 14:41:30 -04:00 • committed by Jens Axboe
commit 5bf9a1f3b4
5 changed files with 13 additions and 10 deletions
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2
block/blk-iolatency.c
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@ -398,8 +398,6 @@ static void blkcg_iolatency_throttle(struct rq_qos *rqos, struct bio *bio,
if (!blk_iolatency_enabled(blkiolat))
return;
bio_issue_init(&bio->bi_issue, bio_sectors(bio));
while (blkg && blkg->parent) {
struct iolatency_grp *iolat = blkg_to_lat(blkg);
if (!iolat) {