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Message-ID: <0163ed9e412b45474df5031e4787880ca4477cc1.1431106907.git.shli@fb.com> Date: Fri, 8 May 2015 10:51:31 -0700 From: Shaohua Li <shli@...com> To: <linux-kernel@...r.kernel.org> CC: <axboe@...com>, <jmoyer@...hat.com>, <hch@....de>, <neilb@...e.de> Subject: [PATCH 4/6 v2] blk-mq: avoid re-initialize request which is failed in direct dispatch If we directly issue a request and it fails, we use blk_mq_merge_queue_io(). But we already assigned bio to a request in blk_mq_bio_to_request. blk_mq_merge_queue_io shouldn't run blk_mq_bio_to_request again. Signed-off-by: Shaohua Li <shli@...com> --- block/blk-mq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/blk-mq.c b/block/blk-mq.c index a65acff..f13d0de 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1284,6 +1284,8 @@ static void blk_mq_make_request(struct request_queue *q, struct bio *bio) blk_mq_end_request(rq, rq->errors); goto done; } + blk_mq_insert_request(rq, false, true, true); + return; } } -- 1.8.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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