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| author | Logan Gunthorpe <logang@deltatee.com> | 2020-07-24 11:25:14 -0600 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-07-29 07:45:21 +0200 |
| commit | 17365ae6975c7f7494a2d1cd0bf18b5ed238e072 (patch) | |
| tree | d82b903b2674e332d8839e88bdf0db298f25eecc /drivers/nvme/host | |
| parent | df21b6b1934e89c2cc2bb1332146ed6c2df1321c (diff) | |
| download | linux-17365ae6975c7f7494a2d1cd0bf18b5ed238e072.tar.bz2 | |
nvme: introduce nvme_execute_passthru_rq to call nvme_passthru_[start|end]()
Introduce a new nvme_execute_passthru_rq() helper which calls
nvme_passthru_[start|end]() around blk_execute_rq(). This ensures
all passthru calls (including nvme_submit_io()) will be wrapped
appropriately.
nvme_execute_passthru_rq() will also be useful for the nvmet passthru
code and is exported in the NVME_TARGET_PASSTHRU namespace.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/host')
| -rw-r--r-- | drivers/nvme/host/core.c | 22 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 |
2 files changed, 16 insertions, 7 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index ab040eef83e7..8296c1248f87 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1028,6 +1028,20 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects) } } +void nvme_execute_passthru_rq(struct request *rq) +{ + struct nvme_command *cmd = nvme_req(rq)->cmd; + struct nvme_ctrl *ctrl = nvme_req(rq)->ctrl; + struct nvme_ns *ns = rq->q->queuedata; + struct gendisk *disk = ns ? ns->disk : NULL; + u32 effects; + + effects = nvme_passthru_start(ctrl, ns, cmd->common.opcode); + blk_execute_rq(rq->q, disk, rq, 0); + nvme_passthru_end(ctrl, effects); +} +EXPORT_SYMBOL_NS_GPL(nvme_execute_passthru_rq, NVME_TARGET_PASSTHRU); + static int nvme_submit_user_cmd(struct request_queue *q, struct nvme_command *cmd, void __user *ubuffer, unsigned bufflen, void __user *meta_buffer, unsigned meta_len, @@ -1066,7 +1080,7 @@ static int nvme_submit_user_cmd(struct request_queue *q, } } - blk_execute_rq(req->q, disk, req, 0); + nvme_execute_passthru_rq(req); if (nvme_req(req)->flags & NVME_REQ_CANCELLED) ret = -EINTR; else @@ -1500,7 +1514,6 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns, struct nvme_passthru_cmd cmd; struct nvme_command c; unsigned timeout = 0; - u32 effects; u64 result; int status; @@ -1527,12 +1540,10 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns, if (cmd.timeout_ms) timeout = msecs_to_jiffies(cmd.timeout_ms); - effects = nvme_passthru_start(ctrl, ns, cmd.opcode); status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c, nvme_to_user_ptr(cmd.addr), cmd.data_len, nvme_to_user_ptr(cmd.metadata), cmd.metadata_len, 0, &result, timeout); - nvme_passthru_end(ctrl, effects); if (status >= 0) { if (put_user(result, &ucmd->result)) @@ -1548,7 +1559,6 @@ static int nvme_user_cmd64(struct nvme_ctrl *ctrl, struct nvme_ns *ns, struct nvme_passthru_cmd64 cmd; struct nvme_command c; unsigned timeout = 0; - u32 effects; int status; if (!capable(CAP_SYS_ADMIN)) @@ -1574,12 +1584,10 @@ static int nvme_user_cmd64(struct nvme_ctrl *ctrl, struct nvme_ns *ns, if (cmd.timeout_ms) timeout = msecs_to_jiffies(cmd.timeout_ms); - effects = nvme_passthru_start(ctrl, ns, cmd.opcode); status = nvme_submit_user_cmd(ns ? ns->queue : ctrl->admin_q, &c, nvme_to_user_ptr(cmd.addr), cmd.data_len, nvme_to_user_ptr(cmd.metadata), cmd.metadata_len, 0, &cmd.result, timeout); - nvme_passthru_end(ctrl, effects); if (status >= 0) { if (put_user(cmd.result, &ucmd->result)) diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 25063f041f8d..4e3bc4b66c57 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -792,5 +792,6 @@ static inline void nvme_hwmon_init(struct nvme_ctrl *ctrl) { } u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u8 opcode); +void nvme_execute_passthru_rq(struct request *rq); #endif /* _NVME_H */ |