[PATCH v4 3/8] nullb: use blk_queue_set_zoned() to setup zoned devices

[Christoph Hellwig]

On Thu, Jan 28, 2021 at 01:47:28PM +0900, Damien Le Moal wrote:
> Use blk_queue_set_zoned() to set a nullb device zone model instead of
> directly assigning the device queue zoned limit. This initialization of
> the devicve zoned model as well as the setup of the queue flag
> QUEUE_FLAG_ZONE_RESETALL and of the device queue elevator feature are
> moved from null_init_zoned_dev() to null_register_zoned_dev() so that
> the initialization of the queue limits is done when the gendisk of the
> nullb device is available.

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>