[PATCH V2 1/1] nvme: introduce generic per-namespace chardev

[Christoph Hellwig]

On Thu, Apr 08, 2021 at 09:11:28AM +0200, Javier González wrote:
> This would be useful for devices with metadata that is not supported by
> the block layer, i.e., nvme_configure_metadata().

You mean in nvme_update_disk_info?  It would be the right thing to do,
but back in the day the maintainers opted for the zero capacity
block device hack.  At least we now have the char device as well.