diff options
| -rw-r--r-- | block/blk-mq.c | 13 | ||||
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 2 | ||||
| -rw-r--r-- | drivers/block/null_blk.c | 2 | ||||
| -rw-r--r-- | drivers/block/virtio_blk.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 1 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 1 |
6 files changed, 14 insertions, 7 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 32b4797f4186..141f2e06803a 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -384,7 +384,7 @@ void blk_mq_complete_request(struct request *rq) } EXPORT_SYMBOL(blk_mq_complete_request); -static void blk_mq_start_request(struct request *rq) +void blk_mq_start_request(struct request *rq) { struct request_queue *q = rq->q; @@ -422,16 +422,18 @@ static void blk_mq_start_request(struct request *rq) rq->nr_phys_segments++; } } +EXPORT_SYMBOL(blk_mq_start_request); static void __blk_mq_requeue_request(struct request *rq) { struct request_queue *q = rq->q; trace_block_rq_requeue(q, rq); - clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags); - if (q->dma_drain_size && blk_rq_bytes(rq)) - rq->nr_phys_segments--; + if (test_and_clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags)) { + if (q->dma_drain_size && blk_rq_bytes(rq)) + rq->nr_phys_segments--; + } } void blk_mq_requeue_request(struct request *rq) @@ -743,8 +745,6 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx) rq = list_first_entry(&rq_list, struct request, queuelist); list_del_init(&rq->queuelist); - blk_mq_start_request(rq); - ret = q->mq_ops->queue_rq(hctx, rq, list_empty(&rq_list)); switch (ret) { case BLK_MQ_RQ_QUEUE_OK: @@ -1186,7 +1186,6 @@ static void blk_mq_make_request(struct request_queue *q, struct bio *bio) int ret; blk_mq_bio_to_request(rq, bio); - blk_mq_start_request(rq); /* * For OK queue, we are done. For error, kill it. Any other diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 0e2084f37c67..4042440a0470 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3783,6 +3783,8 @@ static int mtip_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *rq, if (unlikely(mtip_check_unal_depth(hctx, rq))) return BLK_MQ_RQ_QUEUE_BUSY; + blk_mq_start_request(rq); + ret = mtip_submit_request(hctx, rq); if (likely(!ret)) return BLK_MQ_RQ_QUEUE_OK; diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index c5b7315c2c13..332ce20d45da 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -321,6 +321,8 @@ static int null_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *rq, cmd->rq = rq; cmd->nq = hctx->driver_data; + blk_mq_start_request(rq); + null_handle_cmd(cmd); return BLK_MQ_RQ_QUEUE_OK; } diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 13756e016797..83816bf6882f 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -205,6 +205,8 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *req, } } + blk_mq_start_request(req); + num = blk_rq_map_sg(hctx->queue, vbr->req, vbr->sg); if (num) { if (rq_data_dir(vbr->req) == WRITE) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index f1df41168391..2dcd9078de48 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1890,6 +1890,7 @@ static int scsi_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *req, scsi_init_cmd_errh(cmd); cmd->scsi_done = scsi_mq_done; + blk_mq_start_request(req); reason = scsi_dispatch_cmd(cmd); if (reason) { scsi_set_blocked(cmd, reason); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 9c4e306a9217..878b6f71da48 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -159,6 +159,7 @@ struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag); struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index); struct blk_mq_hw_ctx *blk_mq_alloc_single_hw_queue(struct blk_mq_tag_set *, unsigned int, int); +void blk_mq_start_request(struct request *rq); void blk_mq_end_io(struct request *rq, int error); void __blk_mq_end_io(struct request *rq, int error); |