diff options
author | Christoph Hellwig <hch@lst.de> | 2015-11-28 15:41:58 +0100 |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2015-12-22 09:38:34 -0700 |
commit | 7688faa6dd2c99ce5d66571d9ad65535ec39e8cb (patch) | |
tree | c7e225f067d931754c400635cde063dba49e0ed1 /drivers | |
parent | 4680072003df14230e9eeeeefb617401012234a5 (diff) |
nvme: factor out a few helpers from req_completion
We'll need them in other places later.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/nvme/host/core.c | 11 | ||||
-rw-r--r-- | drivers/nvme/host/nvme.h | 7 | ||||
-rw-r--r-- | drivers/nvme/host/pci.c | 12 |
3 files changed, 20 insertions, 10 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 875e403830a9..b52a789e1e77 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -78,6 +78,17 @@ static struct nvme_ns *nvme_get_ns_from_disk(struct gendisk *disk) return ns; } +void nvme_requeue_req(struct request *req) +{ + unsigned long flags; + + blk_mq_requeue_request(req); + spin_lock_irqsave(req->q->queue_lock, flags); + if (!blk_queue_stopped(req->q)) + blk_mq_kick_requeue_list(req->q); + spin_unlock_irqrestore(req->q->queue_lock, flags); +} + struct request *nvme_alloc_request(struct request_queue *q, struct nvme_command *cmd, unsigned int flags) { diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index aa4b42ecbebe..b0417622d27c 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -216,6 +216,12 @@ static inline int nvme_error_status(u16 status) } } +static inline bool nvme_req_needs_retry(struct request *req, u16 status) +{ + return !(status & NVME_SC_DNR || blk_noretry_request(req)) && + (jiffies - req->start_time) < req->timeout; +} + int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap); int nvme_enable_ctrl(struct nvme_ctrl *ctrl, u64 cap); int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl); @@ -230,6 +236,7 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl); struct request *nvme_alloc_request(struct request_queue *q, struct nvme_command *cmd, unsigned int flags); +void nvme_requeue_req(struct request *req); int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, void *buf, unsigned bufflen); int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 686a4e230841..808fb7355603 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -607,17 +607,9 @@ static void req_completion(struct nvme_queue *nvmeq, void *ctx, int error = 0; if (unlikely(status)) { - if (!(status & NVME_SC_DNR || blk_noretry_request(req)) - && (jiffies - req->start_time) < req->timeout) { - unsigned long flags; - + if (nvme_req_needs_retry(req, status)) { nvme_unmap_data(nvmeq->dev, iod); - - blk_mq_requeue_request(req); - spin_lock_irqsave(req->q->queue_lock, flags); - if (!blk_queue_stopped(req->q)) - blk_mq_kick_requeue_list(req->q); - spin_unlock_irqrestore(req->q->queue_lock, flags); + nvme_requeue_req(req); return; } |