The generic blk_execute_rq() knows how to handle polled completions. Use
that instead of implementing an nvme specific handler.
Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
---
v2->v3:
Retain the REQ_HIPRI flag for nvme polled passthrough requests
drivers/nvme/host/core.c | 40 +++++++------------------------------
drivers/nvme/host/fabrics.c | 13 ++++++------
drivers/nvme/host/fabrics.h | 2 +-
drivers/nvme/host/fc.c | 2 +-
drivers/nvme/host/nvme.h | 2 +-
drivers/nvme/host/rdma.c | 3 +--
drivers/nvme/host/tcp.c | 2 +-
drivers/nvme/target/loop.c | 2 +-
8 files changed, 19 insertions(+), 47 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 784679307c03..2b9deaffa4e1 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -631,6 +631,8 @@ static inline void nvme_init_request(struct request *req,
cmd->common.flags &= ~NVME_CMD_SGL_ALL;
req->cmd_flags |= REQ_FAILFAST_DRIVER;
+ if (req->mq_hctx->type == HCTX_TYPE_POLL)
+ req->cmd_flags |= REQ_HIPRI;
nvme_clear_nvme_request(req);
memcpy(nvme_req(req)->cmd, cmd, sizeof(*cmd));
}
@@ -1032,31 +1034,6 @@ blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req)
}
EXPORT_SYMBOL_GPL(nvme_setup_cmd);
-static void nvme_end_sync_rq(struct request *rq, blk_status_t error)
-{
- struct completion *waiting = rq->end_io_data;
-
- rq->end_io_data = NULL;
- complete(waiting);
-}
-
-static void nvme_execute_rq_polled(struct request_queue *q,
- struct gendisk *bd_disk, struct request *rq, int at_head)
-{
- DECLARE_COMPLETION_ONSTACK(wait);
-
- WARN_ON_ONCE(!test_bit(QUEUE_FLAG_POLL, &q->queue_flags));
-
- rq->cmd_flags |= REQ_HIPRI;
- rq->end_io_data = &wait;
- blk_execute_rq_nowait(bd_disk, rq, at_head, nvme_end_sync_rq);
-
- while (!completion_done(&wait)) {
- blk_poll(q, request_to_qc_t(rq->mq_hctx, rq), true);
- cond_resched();
- }
-}
-
/*
* Returns 0 on success. If the result is negative, it's a Linux error code;
* if the result is positive, it's an NVM Express status code
@@ -1064,7 +1041,7 @@ static void nvme_execute_rq_polled(struct request_queue *q,
int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
union nvme_result *result, void *buffer, unsigned bufflen,
unsigned timeout, int qid, int at_head,
- blk_mq_req_flags_t flags, bool poll)
+ blk_mq_req_flags_t flags)
{
struct request *req;
int ret;
@@ -1085,10 +1062,7 @@ int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
goto out;
}
- if (poll)
- nvme_execute_rq_polled(req->q, NULL, req, at_head);
- else
- blk_execute_rq(NULL, req, at_head);
+ blk_execute_rq(NULL, req, at_head);
if (result)
*result = nvme_req(req)->result;
if (nvme_req(req)->flags & NVME_REQ_CANCELLED)
@@ -1105,7 +1079,7 @@ int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
void *buffer, unsigned bufflen)
{
return __nvme_submit_sync_cmd(q, cmd, NULL, buffer, bufflen, 0,
- NVME_QID_ANY, 0, 0, false);
+ NVME_QID_ANY, 0, 0);
}
EXPORT_SYMBOL_GPL(nvme_submit_sync_cmd);
@@ -1469,7 +1443,7 @@ static int nvme_features(struct nvme_ctrl *dev, u8 op, unsigned int fid,
c.features.dword11 = cpu_to_le32(dword11);
ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &res,
- buffer, buflen, 0, NVME_QID_ANY, 0, 0, false);
+ buffer, buflen, 0, NVME_QID_ANY, 0, 0);
if (ret >= 0 && result)
*result = le32_to_cpu(res.u32);
return ret;
@@ -2054,7 +2028,7 @@ int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len,
cmd.common.cdw11 = cpu_to_le32(len);
return __nvme_submit_sync_cmd(ctrl->admin_q, &cmd, NULL, buffer, len, 0,
- NVME_QID_ANY, 1, 0, false);
+ NVME_QID_ANY, 1, 0);
}
EXPORT_SYMBOL_GPL(nvme_sec_submit);
#endif /* CONFIG_BLK_SED_OPAL */
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 1239a63e3ac2..7f189f7da617 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -154,7 +154,7 @@ int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val)
cmd.prop_get.offset = cpu_to_le32(off);
ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0, 0,
- NVME_QID_ANY, 0, 0, false);
+ NVME_QID_ANY, 0, 0);
if (ret >= 0)
*val = le64_to_cpu(res.u64);
@@ -201,7 +201,7 @@ int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val)
cmd.prop_get.offset = cpu_to_le32(off);
ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0, 0,
- NVME_QID_ANY, 0, 0, false);
+ NVME_QID_ANY, 0, 0);
if (ret >= 0)
*val = le64_to_cpu(res.u64);
@@ -247,7 +247,7 @@ int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val)
cmd.prop_set.value = cpu_to_le64(val);
ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, NULL, NULL, 0, 0,
- NVME_QID_ANY, 0, 0, false);
+ NVME_QID_ANY, 0, 0);
if (unlikely(ret))
dev_err(ctrl->device,
"Property Set error: %d, offset %#x\n",
@@ -394,7 +394,7 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl)
ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res,
data, sizeof(*data), 0, NVME_QID_ANY, 1,
- BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT, false);
+ BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT);
if (ret) {
nvmf_log_connect_error(ctrl, ret, le32_to_cpu(res.u32),
&cmd, data);
@@ -418,7 +418,6 @@ EXPORT_SYMBOL_GPL(nvmf_connect_admin_queue);
* @qid: NVMe I/O queue number for the new I/O connection between
* host and target (note qid == 0 is illegal as this is
* the Admin queue, per NVMe standard).
- * @poll: Whether or not to poll for the completion of the connect cmd.
*
* This function issues a fabrics-protocol connection
* of a NVMe I/O queue (via NVMe Fabrics "Connect" command)
@@ -430,7 +429,7 @@ EXPORT_SYMBOL_GPL(nvmf_connect_admin_queue);
* > 0: NVMe error status code
* < 0: Linux errno error code
*/
-int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid, bool poll)
+int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid)
{
struct nvme_command cmd;
struct nvmf_connect_data *data;
@@ -457,7 +456,7 @@ int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid, bool poll)
ret = __nvme_submit_sync_cmd(ctrl->connect_q, &cmd, &res,
data, sizeof(*data), 0, qid, 1,
- BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT, poll);
+ BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT);
if (ret) {
nvmf_log_connect_error(ctrl, ret, le32_to_cpu(res.u32),
&cmd, data);
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index c31dad69a773..a146cb903869 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -182,7 +182,7 @@ int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val);
int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val);
int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val);
int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl);
-int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid, bool poll);
+int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid);
int nvmf_register_transport(struct nvmf_transport_ops *ops);
void nvmf_unregister_transport(struct nvmf_transport_ops *ops);
void nvmf_free_options(struct nvmf_ctrl_options *opts);
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 256e87721a01..e3d7b636b961 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2346,7 +2346,7 @@ nvme_fc_connect_io_queues(struct nvme_fc_ctrl *ctrl, u16 qsize)
(qsize / 5));
if (ret)
break;
- ret = nvmf_connect_io_queue(&ctrl->ctrl, i, false);
+ ret = nvmf_connect_io_queue(&ctrl->ctrl, i);
if (ret)
break;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 1f397ecba16c..499681bc0286 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -658,7 +658,7 @@ int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
union nvme_result *result, void *buffer, unsigned bufflen,
unsigned timeout, int qid, int at_head,
- blk_mq_req_flags_t flags, bool poll);
+ blk_mq_req_flags_t flags);
int nvme_set_features(struct nvme_ctrl *dev, unsigned int fid,
unsigned int dword11, void *buffer, size_t buflen,
u32 *result);
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 74bf2c7f2b80..855a33e0d1b1 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -680,11 +680,10 @@ static void nvme_rdma_stop_io_queues(struct nvme_rdma_ctrl *ctrl)
static int nvme_rdma_start_queue(struct nvme_rdma_ctrl *ctrl, int idx)
{
struct nvme_rdma_queue *queue = &ctrl->queues[idx];
- bool poll = nvme_rdma_poll_queue(queue);
int ret;
if (idx)
- ret = nvmf_connect_io_queue(&ctrl->ctrl, idx, poll);
+ ret = nvmf_connect_io_queue(&ctrl->ctrl, idx);
else
ret = nvmf_connect_admin_queue(&ctrl->ctrl);
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 5fc6c568c626..01056722a5e4 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1574,7 +1574,7 @@ static int nvme_tcp_start_queue(struct nvme_ctrl *nctrl, int idx)
int ret;
if (idx)
- ret = nvmf_connect_io_queue(nctrl, idx, false);
+ ret = nvmf_connect_io_queue(nctrl, idx);
else
ret = nvmf_connect_admin_queue(nctrl);
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index cb30cb942e1d..2a7bf1019952 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -335,7 +335,7 @@ static int nvme_loop_connect_io_queues(struct nvme_loop_ctrl *ctrl)
int i, ret;
for (i = 1; i < ctrl->ctrl.queue_count; i++) {
- ret = nvmf_connect_io_queue(&ctrl->ctrl, i, false);
+ ret = nvmf_connect_io_queue(&ctrl->ctrl, i);
if (ret)
return ret;
set_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[i].flags);
--
2.25.4
