sd: cleanup zoned queue limits initialization

Consolidate setting zone-related queue limits in sd_zbc_read_zones
instead of splitting them between sd_zbc_revalidate_zones and
sd_zbc_read_zones, and move the early_zone_information initialization
in sd_zbc_read_zones above setting up the queue limits.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240531074837.1648501-11-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: Christoph Hellwig

drivers/scsi/sd_zbc.c

@@ -565,12 +565,6 @@ int sd_zbc_revalidate_zones(struct scsi_disk *sdkp)
 	sdkp->zone_info.zone_blocks = zone_blocks;
 	sdkp->zone_info.nr_zones = nr_zones;
 
-	blk_queue_chunk_sectors(q,
-			logical_to_sectors(sdkp->device, zone_blocks));
-
-	/* Enable block layer zone append emulation */
-	blk_queue_max_zone_append_sectors(q, 0);
-
 	flags = memalloc_noio_save();
 	ret = blk_revalidate_disk_zones(disk);
 	memalloc_noio_restore(flags);
@@ -625,17 +619,21 @@ int sd_zbc_read_zones(struct scsi_disk *sdkp, u8 buf[SD_BUF_SIZE])
 	if (ret != 0)
 		goto err;
 
+	nr_zones = round_up(sdkp->capacity, zone_blocks) >> ilog2(zone_blocks);
+	sdkp->early_zone_info.nr_zones = nr_zones;
+	sdkp->early_zone_info.zone_blocks = zone_blocks;
+
 	/* The drive satisfies the kernel restrictions: set it up */
 	blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q);
 	if (sdkp->zones_max_open == U32_MAX)
 		disk_set_max_open_zones(disk, 0);
 	else
 		disk_set_max_open_zones(disk, sdkp->zones_max_open);
 	disk_set_max_active_zones(disk, 0);
-	nr_zones = round_up(sdkp->capacity, zone_blocks) >> ilog2(zone_blocks);
-
-	sdkp->early_zone_info.nr_zones = nr_zones;
-	sdkp->early_zone_info.zone_blocks = zone_blocks;
+	blk_queue_chunk_sectors(q,
+			logical_to_sectors(sdkp->device, zone_blocks));
+	/* Enable block layer zone append emulation */
+	blk_queue_max_zone_append_sectors(q, 0);
 
 	return 0;