blk-mq: update ->init_request and ->exit_request prototypes

Remove the request_idx parameter, which can't be used safely now that we
support I/O schedulers with blk-mq.  Except for a superflous check in
mtip32xx it was unused anyway.

Also pass the tag_set instead of just the driver data - this allows drivers
to avoid some code duplication in a follow on cleanup.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

4 files changed, 39 insertions, 41 deletions

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 4976db56e351..70e689bf1cad 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1172,12 +1172,12 @@ __nvme_fc_exit_request(struct nvme_fc_ctrl *ctrl,
 }
 
 static void
-nvme_fc_exit_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx)
+nvme_fc_exit_request(struct blk_mq_tag_set *set, struct request *rq,
+		unsigned int hctx_idx)
 {
 	struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
 
-	return __nvme_fc_exit_request(data, op);
+	return __nvme_fc_exit_request(set->driver_data, op);
 }
 
 static int
@@ -1434,11 +1434,10 @@ out_on_error:
 }
 
 static int
-nvme_fc_init_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+nvme_fc_init_request(struct blk_mq_tag_set *set, struct request *rq,
+		unsigned int hctx_idx, unsigned int numa_node)
 {
-	struct nvme_fc_ctrl *ctrl = data;
+	struct nvme_fc_ctrl *ctrl = set->driver_data;
 	struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
 	struct nvme_fc_queue *queue = &ctrl->queues[hctx_idx+1];
 
@@ -1446,11 +1445,10 @@ nvme_fc_init_request(void *data, struct request *rq,
 }
 
 static int
-nvme_fc_init_admin_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+nvme_fc_init_admin_request(struct blk_mq_tag_set *set, struct request *rq,
+		unsigned int hctx_idx, unsigned int numa_node)
 {
-	struct nvme_fc_ctrl *ctrl = data;
+	struct nvme_fc_ctrl *ctrl = set->driver_data;
 	struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
 	struct nvme_fc_queue *queue = &ctrl->queues[0];
 
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c8541c3dcd19..56a315bd4d96 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -356,11 +356,11 @@ static void nvme_admin_exit_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_i
 	nvmeq->tags = NULL;
 }
 
-static int nvme_admin_init_request(void *data, struct request *req,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+static int nvme_admin_init_request(struct blk_mq_tag_set *set,
+		struct request *req, unsigned int hctx_idx,
+		unsigned int numa_node)
 {
-	struct nvme_dev *dev = data;
+	struct nvme_dev *dev = set->driver_data;
 	struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
 	struct nvme_queue *nvmeq = dev->queues[0];
 
@@ -383,11 +383,10 @@ static int nvme_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
 	return 0;
 }
 
-static int nvme_init_request(void *data, struct request *req,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+static int nvme_init_request(struct blk_mq_tag_set *set, struct request *req,
+		unsigned int hctx_idx, unsigned int numa_node)
 {
-	struct nvme_dev *dev = data;
+	struct nvme_dev *dev = set->driver_data;
 	struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
 	struct nvme_queue *nvmeq = dev->queues[hctx_idx + 1];
 
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 29cf88ac3f61..dd1c6deef82f 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -315,16 +315,16 @@ static void __nvme_rdma_exit_request(struct nvme_rdma_ctrl *ctrl,
 			DMA_TO_DEVICE);
 }
 
-static void nvme_rdma_exit_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx)
+static void nvme_rdma_exit_request(struct blk_mq_tag_set *set,
+		struct request *rq, unsigned int hctx_idx)
 {
-	return __nvme_rdma_exit_request(data, rq, hctx_idx + 1);
+	return __nvme_rdma_exit_request(set->driver_data, rq, hctx_idx + 1);
 }
 
-static void nvme_rdma_exit_admin_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx)
+static void nvme_rdma_exit_admin_request(struct blk_mq_tag_set *set,
+		struct request *rq, unsigned int hctx_idx)
 {
-	return __nvme_rdma_exit_request(data, rq, 0);
+	return __nvme_rdma_exit_request(set->driver_data, rq, 0);
 }
 
 static int __nvme_rdma_init_request(struct nvme_rdma_ctrl *ctrl,
@@ -358,18 +358,18 @@ out_free_qe:
 	return -ENOMEM;
 }
 
-static int nvme_rdma_init_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+static int nvme_rdma_init_request(struct blk_mq_tag_set *set,
+		struct request *rq, unsigned int hctx_idx,
+		unsigned int numa_node)
 {
-	return __nvme_rdma_init_request(data, rq, hctx_idx + 1);
+	return __nvme_rdma_init_request(set->driver_data, rq, hctx_idx + 1);
 }
 
-static int nvme_rdma_init_admin_request(void *data, struct request *rq,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+static int nvme_rdma_init_admin_request(struct blk_mq_tag_set *set,
+		struct request *rq, unsigned int hctx_idx,
+		unsigned int numa_node)
 {
-	return __nvme_rdma_init_request(data, rq, 0);
+	return __nvme_rdma_init_request(set->driver_data, rq, 0);
 }
 
 static int nvme_rdma_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 304f1c87c160..feb497134aee 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -230,18 +230,19 @@ static int nvme_loop_init_iod(struct nvme_loop_ctrl *ctrl,
 	return 0;
 }
 
-static int nvme_loop_init_request(void *data, struct request *req,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+static int nvme_loop_init_request(struct blk_mq_tag_set *set,
+		struct request *req, unsigned int hctx_idx,
+		unsigned int numa_node)
 {
-	return nvme_loop_init_iod(data, blk_mq_rq_to_pdu(req), hctx_idx + 1);
+	return nvme_loop_init_iod(set->driver_data, blk_mq_rq_to_pdu(req),
+			hctx_idx + 1);
 }
 
-static int nvme_loop_init_admin_request(void *data, struct request *req,
-				unsigned int hctx_idx, unsigned int rq_idx,
-				unsigned int numa_node)
+static int nvme_loop_init_admin_request(struct blk_mq_tag_set *set,
+		struct request *req, unsigned int hctx_idx,
+		unsigned int numa_node)
 {
-	return nvme_loop_init_iod(data, blk_mq_rq_to_pdu(req), 0);
+	return nvme_loop_init_iod(set->driver_data, blk_mq_rq_to_pdu(req), 0);
 }
 
 static int nvme_loop_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,