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nvme: introduce nvme_start_request

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In preparation for nvme-multipath IO stats accounting, we want the
accounting to happen in a centralized place. The request completion
is already centralized, but we need a common helper to request I/O
start.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
This commit is contained in:
Sagi Grimberg 2022-10-03 12:43:43 +03:00 committed by Christoph Hellwig
parent 99722c8aa8
commit 6887fc6495
7 changed files with 11 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/nvme/host/apple.c
View file

@ -763,7 +763,7 @@ static blk_status_t apple_nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
goto out_free_cmd;
}
blk_mq_start_request(req);
nvme_start_request(req);
apple_nvme_submit_cmd(q, cmnd);
return BLK_STS_OK;

2
drivers/nvme/host/fc.c
View file

@ -2733,7 +2733,7 @@ nvme_fc_start_fcp_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue,
atomic_set(&op->state, FCPOP_STATE_ACTIVE);
if (!(op->flags & FCOP_FLAGS_AEN))
blk_mq_start_request(op->rq);
nvme_start_request(op->rq);
cmdiu->csn = cpu_to_be32(atomic_inc_return(&queue->csn));
ret = ctrl->lport->ops->fcp_io(&ctrl->lport->localport,

5
drivers/nvme/host/nvme.h
View file

@ -1012,6 +1012,11 @@ static inline void nvme_hwmon_exit(struct nvme_ctrl *ctrl)
}
#endif
static inline void nvme_start_request(struct request *rq)
{
blk_mq_start_request(rq);
}
static inline bool nvme_ctrl_sgl_supported(struct nvme_ctrl *ctrl)
{
return ctrl->sgls & ((1 << 0) | (1 << 1));

2
drivers/nvme/host/pci.c
View file

@ -907,7 +907,7 @@ static blk_status_t nvme_prep_rq(struct nvme_dev *dev, struct request *req)
goto out_unmap_data;
}
blk_mq_start_request(req);
nvme_start_request(req);
return BLK_STS_OK;
out_unmap_data:
nvme_unmap_data(dev, req);

2
drivers/nvme/host/rdma.c
View file

@ -2040,7 +2040,7 @@ static blk_status_t nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx,
if (ret)
goto unmap_qe;
blk_mq_start_request(rq);
nvme_start_request(rq);
if (IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY) &&
queue->pi_support &&

2
drivers/nvme/host/tcp.c
View file

@ -2405,7 +2405,7 @@ static blk_status_t nvme_tcp_queue_rq(struct blk_mq_hw_ctx *hctx,
if (unlikely(ret))
return ret;
blk_mq_start_request(rq);
nvme_start_request(rq);
nvme_tcp_queue_request(req, true, bd->last);

2
drivers/nvme/target/loop.c
View file

@ -145,7 +145,7 @@ static blk_status_t nvme_loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (ret)
return ret;
blk_mq_start_request(req);
nvme_start_request(req);
iod->cmd.common.flags |= NVME_CMD_SGL_METABUF;
iod->req.port = queue->ctrl->port;
if (!nvmet_req_init(&iod->req, &queue->nvme_cq,