[PATCH 16/17] nvme: implement multipath access to nvme subsystems

[Christoph Hellwig]

On Mon, Oct 30, 2017 at 11:37:55AM +0800, Guan Junxiong wrote:
> > +	head->disk->flags = GENHD_FL_EXT_DEVT;
> > +	sprintf(head->disk->disk_name, "nvme%dn%d",
> > +			ctrl->subsys->instance, nsid);
> 
> Is it okay to use head->instance instead of nsid for disk name nvme#n# ?
> Becuase _nsid_ sets are not continuous sometimes, so disk name is ugly in that case.

This actually was supposed to be the ns_head instance, that's why the
ns_ida moved to the subsystem.  I've fixed it up.