[PATCH] nvme: skip noiob for zoned devices

[Sagi Grimberg]

> Zoned block devices reuse the chunk_sectors queue limit to define zone
> boundaries. If a such a device happens to also report an optimal
> boundary, do not use that to define the chunk_sectors as that may
> intermittently interfere with io splitting and zone size queries.
> 
> Signed-off-by: Keith Busch <kbusch at kernel.org>
> ---
>   drivers/nvme/host/core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index 88cff309d8e4..4e0225d85e70 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2075,7 +2075,7 @@ static int __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
>   		}
>   	}
>   
> -	if (iob)
> +	if (iob && blk_queue_is_zoned(ns->queue))
>   		blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(iob));
>   	nvme_update_disk_info(disk, ns, id);
>   #ifdef CONFIG_NVME_MULTIPATH

Reviewed-by: Sagi Grimberg <sagi at grimberg.me>