[PATCH 5/6] block: add zone attr. to zone mgmt IOCTL struct

[Christoph Hellwig]

> + * Zone Attributes
> + */
> +enum blk_zone_attr {
> +	BLK_ZONE_ATTR_ZFC	= 1 << 0,
> +	BLK_ZONE_ATTR_FZR	= 1 << 1,
> +	BLK_ZONE_ATTR_RZR	= 1 << 2,
> +	BLK_ZONE_ATTR_ZDEV	= 1 << 7,
> +};

I have no ^$^$#$%#% idea what this is supposed to be.  If you add
userspace ABIs you need to document them in detail.  Until I've seen
that documentation I can't even comment if they make sense.