From 6131837b1de66116459ef4413e26fdbc70d066dc Mon Sep 17 00:00:00 2001 From: Omar Sandoval Date: Thu, 26 Apr 2018 00:21:58 -0700 Subject: [PATCH] blk-mq: count allocated but not started requests in iostats inflight In the legacy block case, we increment the counter right after we allocate the request, not when the driver handles it. In both the legacy and blk-mq cases, part_inc_in_flight() is called from blk_account_io_start() right after we've allocated the request. blk-mq only considers requests started requests as inflight, but this is inconsistent with the legacy definition and the intention in the code. This removes the started condition and instead counts all allocated requests. Fixes: f299b7c7a9de ("blk-mq: provide internal in-flight variant") Signed-off-by: Omar Sandoval Signed-off-by: Jens Axboe --- block/blk-mq.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index c3621453ad87..5450cbc61f8d 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -95,18 +95,15 @@ static void blk_mq_check_inflight(struct blk_mq_hw_ctx *hctx, { struct mq_inflight *mi = priv; - if (blk_mq_rq_state(rq) == MQ_RQ_IN_FLIGHT) { - /* - * index[0] counts the specific partition that was asked - * for. index[1] counts the ones that are active on the - * whole device, so increment that if mi->part is indeed - * a partition, and not a whole device. - */ - if (rq->part == mi->part) - mi->inflight[0]++; - if (mi->part->partno) - mi->inflight[1]++; - } + /* + * index[0] counts the specific partition that was asked for. index[1] + * counts the ones that are active on the whole device, so increment + * that if mi->part is indeed a partition, and not a whole device. + */ + if (rq->part == mi->part) + mi->inflight[0]++; + if (mi->part->partno) + mi->inflight[1]++; } void blk_mq_in_flight(struct request_queue *q, struct hd_struct *part, -- 2.30.2