diff options
author | Christoph Hellwig <hch@lst.de> | 2017-01-31 16:57:31 +0100 |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2017-01-31 14:00:44 -0700 |
commit | aebf526b53aea164508730427597d45f3e06b376 (patch) | |
tree | 98ab726d0f7feb610feee9830246c900c6919eea /drivers/nvme | |
parent | 2f5a8e80f79dc82e00f4cca557dc9ceaf064b450 (diff) | |
download | linux-aebf526b53aea164508730427597d45f3e06b376.tar.bz2 |
block: fold cmd_type into the REQ_OP_ space
Instead of keeping two levels of indirection for requests types, fold it
all into the operations. The little caveat here is that previously
cmd_type only applied to struct request, while the request and bio op
fields were set to plain REQ_OP_READ/WRITE even for passthrough
operations.
Instead this patch adds new REQ_OP_* for SCSI passthrough and driver
private requests, althought it has to add two for each so that we
can communicate the data in/out nature of the request.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/nvme')
-rw-r--r-- | drivers/nvme/host/core.c | 26 | ||||
-rw-r--r-- | drivers/nvme/host/rdma.c | 2 |
2 files changed, 19 insertions, 9 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 8a3c3e32a704..1640a5c8abbb 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -208,18 +208,18 @@ EXPORT_SYMBOL_GPL(nvme_requeue_req); struct request *nvme_alloc_request(struct request_queue *q, struct nvme_command *cmd, unsigned int flags, int qid) { + unsigned op = nvme_is_write(cmd) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN; struct request *req; if (qid == NVME_QID_ANY) { - req = blk_mq_alloc_request(q, nvme_is_write(cmd), flags); + req = blk_mq_alloc_request(q, op, flags); } else { - req = blk_mq_alloc_request_hctx(q, nvme_is_write(cmd), flags, + req = blk_mq_alloc_request_hctx(q, op, flags, qid ? qid - 1 : 0); } if (IS_ERR(req)) return req; - req->cmd_type = REQ_TYPE_DRV_PRIV; req->cmd_flags |= REQ_FAILFAST_DRIVER; nvme_req(req)->cmd = cmd; @@ -309,17 +309,27 @@ int nvme_setup_cmd(struct nvme_ns *ns, struct request *req, { int ret = BLK_MQ_RQ_QUEUE_OK; - if (req->cmd_type == REQ_TYPE_DRV_PRIV) + switch (req_op(req)) { + case REQ_OP_DRV_IN: + case REQ_OP_DRV_OUT: memcpy(cmd, nvme_req(req)->cmd, sizeof(*cmd)); - else if (req_op(req) == REQ_OP_FLUSH) + break; + case REQ_OP_FLUSH: nvme_setup_flush(ns, cmd); - else if (req_op(req) == REQ_OP_DISCARD) + break; + case REQ_OP_DISCARD: ret = nvme_setup_discard(ns, req, cmd); - else + break; + case REQ_OP_READ: + case REQ_OP_WRITE: nvme_setup_rw(ns, req, cmd); + break; + default: + WARN_ON_ONCE(1); + return BLK_MQ_RQ_QUEUE_ERROR; + } cmd->common.command_id = req->tag; - return ret; } EXPORT_SYMBOL_GPL(nvme_setup_cmd); diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index ecc79b2fcfaf..a75e95d42b3f 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -1471,7 +1471,7 @@ static int nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx, ib_dma_sync_single_for_device(dev, sqe->dma, sizeof(struct nvme_command), DMA_TO_DEVICE); - if (rq->cmd_type == REQ_TYPE_FS && req_op(rq) == REQ_OP_FLUSH) + if (req_op(rq) == REQ_OP_FLUSH) flush = true; ret = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge, req->mr->need_inval ? &req->reg_wr.wr : NULL, flush); |