Add support for specifying the number of retries per NVMe command.
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Keith Busch <kbusch@xxxxxxxxxx>
Cc: Sagi Grimberg <sagi@xxxxxxxxxxx>
Cc: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
drivers/nvme/host/core.c | 3 ++-
drivers/nvme/host/nvme.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index b3d9c29aba1e..df9ac7fab9b8 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -339,7 +339,7 @@ static inline enum nvme_disposition nvme_decide_disposition(struct request *req)
if (blk_noretry_request(req) ||
(nvme_req(req)->status & NVME_SC_DNR) ||
- nvme_req(req)->retries >= nvme_max_retries)
+ nvme_req(req)->retries >= nvme_req(req)->max_retries)
return COMPLETE;
if (req->cmd_flags & REQ_NVME_MPATH) {
@@ -632,6 +632,7 @@ static inline void nvme_clear_nvme_request(struct request *req)
{
nvme_req(req)->status = 0;
nvme_req(req)->retries = 0;
+ nvme_req(req)->max_retries = nvme_max_retries;
nvme_req(req)->flags = 0;
req->rq_flags |= RQF_DONTPREP;
}
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 0da94b233fed..ca415cd9571e 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -160,6 +160,7 @@ struct nvme_request {
union nvme_result result;
u8 genctr;
u8 retries;
+ u8 max_retries;
u8 flags;
u16 status;
struct nvme_ctrl *ctrl;
