[PATCH 15/17] nvme: track shared namespaces

[Christoph Hellwig]

On Thu, Oct 19, 2017 at 02:06:07PM +0300, Sagi Grimberg wrote:
> Christoph,
>
>>   static void nvme_free_ns(struct kref *kref)
>>   {
>>   	struct nvme_ns *ns = container_of(kref, struct nvme_ns, kref);
>>   +	if (ns->head)
>> +		nvme_put_ns_head(ns->head);
>> +
>
> When can we not have a ns-head set?
>
> AFAICT, if nvme_alloc_ns succeeded, we have it set don't we?

Yes, I don't think we should need it.  Let me verify that for the
next round.