ublk: take const ubq pointer in ublk_get_iod()

ublk_get_iod() doesn't modify the struct ublk_queue it is passed.
Clarify that by making the argument a const pointer.

Move the function definition earlier in the file so it doesn't need a
forward declaration.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250430225234.2676781-5-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 4967a5d720292a7fdd119388f0aadf4536555315..f4c1db2e7f548b7bbf313b80d5c56c4bf7f7c6b3 100644 (file)
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -205,8 +205,13 @@ static void ublk_abort_queue(struct ublk_device *ub, struct ublk_queue *ubq);
 static inline struct request *__ublk_check_and_get_req(struct ublk_device *ub,
                struct ublk_queue *ubq, int tag, size_t offset);
 static inline unsigned int ublk_req_build_flags(struct request *req);
-static inline struct ublksrv_io_desc *ublk_get_iod(struct ublk_queue *ubq,
-                                                  int tag);
+
+static inline struct ublksrv_io_desc *
+ublk_get_iod(const struct ublk_queue *ubq, unsigned tag)
+{
+       return &ubq->io_cmd_buf[tag];
+}
+
 static inline bool ublk_dev_is_user_copy(const struct ublk_device *ub)
 {
        return ub->dev_info.flags & (UBLK_F_USER_COPY | UBLK_F_SUPPORT_ZERO_COPY);
@@ -694,12 +699,6 @@ static inline bool ublk_rq_has_data(const struct request *rq)
        return bio_has_data(rq->bio);
 }
 
-static inline struct ublksrv_io_desc *ublk_get_iod(struct ublk_queue *ubq,
-               int tag)
-{
-       return &ubq->io_cmd_buf[tag];
-}
-
 static inline struct ublksrv_io_desc *
 ublk_queue_cmd_buf(struct ublk_device *ub, int q_id)
 {