[PATCH RFC] nvme-multipath: fix diskstats for partitions

[Christoph Hellwig]

On Tue, Jul 21, 2026 at 11:45:53AM +0000, John Garry wrote:
> Setting as an RFC as adding this extra bio field is not acceptable, but I
> can't see how to lookup the original partition.

In general it is not, but you should mark this a block patch so that
Jens can better cream at you :)

I'm also not sure that supporting per-partition diskstats on a multipath
device makes too much sense, but then again there's a lot of setups
that are crazy and actually used..