nvme/target: Use the new blk_opf_t type

Improve static type checking by using the new blk_opf_t type for variables
that represent a request operation combined with request flags. Rename
those variables from 'op' into 'opf'.

Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-39-bvanassche@acm.orgSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/nvme/target/io-cmd-bdev.c

@@ -246,7 +246,8 @@ static void nvmet_bdev_execute_rw(struct nvmet_req *req)
 	struct scatterlist *sg;
 	struct blk_plug plug;
 	sector_t sector;
-	int op, i, rc;
+	blk_opf_t opf;
+	int i, rc;
 	struct sg_mapping_iter prot_miter;
 	unsigned int iter_flags;
 	unsigned int total_len = nvmet_rw_data_len(req) + req->metadata_len;
@@ -260,26 +261,26 @@ static void nvmet_bdev_execute_rw(struct nvmet_req *req)
 	}
 
 	if (req->cmd->rw.opcode == nvme_cmd_write) {
-		op = REQ_OP_WRITE | REQ_SYNC | REQ_IDLE;
+		opf = REQ_OP_WRITE | REQ_SYNC | REQ_IDLE;
 		if (req->cmd->rw.control & cpu_to_le16(NVME_RW_FUA))
-			op |= REQ_FUA;
+			opf |= REQ_FUA;
 		iter_flags = SG_MITER_TO_SG;
 	} else {
-		op = REQ_OP_READ;
+		opf = REQ_OP_READ;
 		iter_flags = SG_MITER_FROM_SG;
 	}
 
 	if (is_pci_p2pdma_page(sg_page(req->sg)))
-		op |= REQ_NOMERGE;
+		opf |= REQ_NOMERGE;
 
 	sector = nvmet_lba_to_sect(req->ns, req->cmd->rw.slba);
 
 	if (nvmet_use_inline_bvec(req)) {
 		bio = &req->b.inline_bio;
 		bio_init(bio, req->ns->bdev, req->inline_bvec,
-			 ARRAY_SIZE(req->inline_bvec), op);
+			 ARRAY_SIZE(req->inline_bvec), opf);
 	} else {
-		bio = bio_alloc(req->ns->bdev, bio_max_segs(sg_cnt), op,
+		bio = bio_alloc(req->ns->bdev, bio_max_segs(sg_cnt), opf,
 				GFP_KERNEL);
 	}
 	bio->bi_iter.bi_sector = sector;
@@ -306,7 +307,7 @@ static void nvmet_bdev_execute_rw(struct nvmet_req *req)
 			}
 
 			bio = bio_alloc(req->ns->bdev, bio_max_segs(sg_cnt),
-					op, GFP_KERNEL);
+					opf, GFP_KERNEL);
 			bio->bi_iter.bi_sector = sector;
 
 			bio_chain(bio, prev);

drivers/nvme/target/zns.c

@@ -525,7 +525,7 @@ static void nvmet_bdev_zone_append_bio_done(struct bio *bio)
 void nvmet_bdev_execute_zone_append(struct nvmet_req *req)
 {
 	sector_t sect = nvmet_lba_to_sect(req->ns, req->cmd->rw.slba);
-	const unsigned int op = REQ_OP_ZONE_APPEND | REQ_SYNC | REQ_IDLE;
+	const blk_opf_t opf = REQ_OP_ZONE_APPEND | REQ_SYNC | REQ_IDLE;
 	u16 status = NVME_SC_SUCCESS;
 	unsigned int total_len = 0;
 	struct scatterlist *sg;
@@ -556,9 +556,9 @@ void nvmet_bdev_execute_zone_append(struct nvmet_req *req)
 	if (nvmet_use_inline_bvec(req)) {
 		bio = &req->z.inline_bio;
 		bio_init(bio, req->ns->bdev, req->inline_bvec,
-			 ARRAY_SIZE(req->inline_bvec), op);
+			 ARRAY_SIZE(req->inline_bvec), opf);
 	} else {
-		bio = bio_alloc(req->ns->bdev, req->sg_cnt, op, GFP_KERNEL);
+		bio = bio_alloc(req->ns->bdev, req->sg_cnt, opf, GFP_KERNEL);
 	}
 
 	bio->bi_end_io = nvmet_bdev_zone_append_bio_done;