Re: [PATCH 02/14] drbd: remove dead code in device_to_statistics

[Christoph Hellwig]

On Wed, Jul 22, 2020 at 07:03:21AM +0000, Johannes Thumshirn wrote:
> On 22/07/2020 08:28, Christoph Hellwig wrote:
> > Ever since the switch to blk-mq, a lower device not use by VM
>                                            in-use/used? ~^

Yeah, this should be used.

> Also this looks like the last user of 'dev_lower_blocked' so it could
> be removed from device_statistics if it's not an ABI (not sure with this
> netlink stuff).

As far as I can tell this is a netlink user ABI.