ublk_setup_iod() checks first whether the request is a zoned operation
issued to a device without zoned support and returns BLK_STS_IOERR if
so. However, such a request would already hit the default case in the
subsequent switch statement and fail the ublk_queue_is_zoned() check,
which also results in a return of BLK_STS_IOERR. So remove the redundant
early check for unsupported zone ops.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
---
 drivers/block/ublk_drv.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 5ab7ff5f03f4..fcc8b3868137 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1103,17 +1103,12 @@ static inline unsigned int ublk_req_build_flags(struct request *req)
 
 static blk_status_t ublk_setup_iod(struct ublk_queue *ubq, struct request *req)
 {
 	struct ublksrv_io_desc *iod = ublk_get_iod(ubq, req->tag);
 	struct ublk_io *io = &ubq->ios[req->tag];
-	enum req_op op = req_op(req);
 	u32 ublk_op;
 
-	if (!ublk_queue_is_zoned(ubq) &&
-	    (op_is_zone_mgmt(op) || op == REQ_OP_ZONE_APPEND))
-		return BLK_STS_IOERR;
-
 	switch (req_op(req)) {
 	case REQ_OP_READ:
 		ublk_op = UBLK_IO_OP_READ;
 		break;
 	case REQ_OP_WRITE:
-- 
2.45.2

On Tue, 23 Sep 2025 09:52:48 -0600, Caleb Sander Mateos wrote:
> ublk_setup_iod() checks first whether the request is a zoned operation
> issued to a device without zoned support and returns BLK_STS_IOERR if
> so. However, such a request would already hit the default case in the
> subsequent switch statement and fail the ublk_queue_is_zoned() check,
> which also results in a return of BLK_STS_IOERR. So remove the redundant
> early check for unsupported zone ops.
> 
> [...]

Applied, thanks!

[1/1] ublk: remove redundant zone op check in ublk_setup_iod()
      commit: f85e254b51aeadf8dc367aaf2fbd2c20378f75c2

Best regards,
-- 
Jens Axboe

On Tue, Sep 23, 2025 at 09:52:48AM -0600, Caleb Sander Mateos wrote:
> ublk_setup_iod() checks first whether the request is a zoned operation
> issued to a device without zoned support and returns BLK_STS_IOERR if
> so. However, such a request would already hit the default case in the
> subsequent switch statement and fail the ublk_queue_is_zoned() check,
> which also results in a return of BLK_STS_IOERR. So remove the redundant
> early check for unsupported zone ops.
> 
> Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>

Reviewed-by: Ming Lei <ming.lei@redhat.com>

Thanks,
Ming