[PATCH 08/20] nvme: call nvme_identify_ns as the first thing in nvme_alloc_ns_block

[Chaitanya Kulkarni]

On 9/28/20 05:41, Christoph Hellwig wrote:
> Check if the namespace actually exists as the very first thing and don't
> bother with any extra work if not.  This should speed up and simplify
> the sequential scanning for NVMe 1.0 devices.
>
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Looks good.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni at wdc.com>