Re: [PATCH 15/17] dm-zoned: cleanup dmz_fixup_devices

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On 7/4/22 21:44, Christoph Hellwig wrote:
> Use the bdev based helpers where applicable and move the zoned_dev
> into the scope where it is actually used.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>

> ---
>  drivers/md/dm-zoned-target.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c
> index 6ba6ef44b00e2..95b132b52f332 100644
> --- a/drivers/md/dm-zoned-target.c
> +++ b/drivers/md/dm-zoned-target.c
> @@ -764,8 +764,7 @@ static void dmz_put_zoned_device(struct dm_target *ti)
>  static int dmz_fixup_devices(struct dm_target *ti)
>  {
>  	struct dmz_target *dmz = ti->private;
> -	struct dmz_dev *reg_dev, *zoned_dev;
> -	struct request_queue *q;
> +	struct dmz_dev *reg_dev = NULL;
>  	sector_t zone_nr_sectors = 0;
>  	int i;
>  
> @@ -780,31 +779,32 @@ static int dmz_fixup_devices(struct dm_target *ti)
>  			return -EINVAL;
>  		}
>  		for (i = 1; i < dmz->nr_ddevs; i++) {
> -			zoned_dev = &dmz->dev[i];
> +			struct dmz_dev *zoned_dev = &dmz->dev[i];
> +			struct block_device *bdev = zoned_dev->bdev;
> +
>  			if (zoned_dev->flags & DMZ_BDEV_REGULAR) {
>  				ti->error = "Secondary disk is not a zoned device";
>  				return -EINVAL;
>  			}
> -			q = bdev_get_queue(zoned_dev->bdev);
>  			if (zone_nr_sectors &&
> -			    zone_nr_sectors != blk_queue_zone_sectors(q)) {
> +			    zone_nr_sectors != bdev_zone_sectors(bdev)) {
>  				ti->error = "Zone nr sectors mismatch";
>  				return -EINVAL;
>  			}
> -			zone_nr_sectors = blk_queue_zone_sectors(q);
> +			zone_nr_sectors = bdev_zone_sectors(bdev);
>  			zoned_dev->zone_nr_sectors = zone_nr_sectors;
> -			zoned_dev->nr_zones = bdev_nr_zones(zoned_dev->bdev);
> +			zoned_dev->nr_zones = bdev_nr_zones(bdev);
>  		}
>  	} else {
> -		reg_dev = NULL;
> -		zoned_dev = &dmz->dev[0];
> +		struct dmz_dev *zoned_dev = &dmz->dev[0];
> +		struct block_device *bdev = zoned_dev->bdev;
> +
>  		if (zoned_dev->flags & DMZ_BDEV_REGULAR) {
>  			ti->error = "Disk is not a zoned device";
>  			return -EINVAL;
>  		}
> -		q = bdev_get_queue(zoned_dev->bdev);
> -		zoned_dev->zone_nr_sectors = blk_queue_zone_sectors(q);
> -		zoned_dev->nr_zones = bdev_nr_zones(zoned_dev->bdev);
> +		zoned_dev->zone_nr_sectors = bdev_zone_sectors(bdev);
> +		zoned_dev->nr_zones = bdev_nr_zones(bdev);
>  	}
>  
>  	if (reg_dev) {


-- 
Damien Le Moal
Western Digital Research

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