[PATCHv2 1/2] block: export passthrough stats enabled

[Keith Busch]

On Wed, May 27, 2026 at 03:14:58PM +0200, Christoph Hellwig wrote:
> > +static inline bool blk_rq_passthrough_stats(struct request *req,
> > +					    struct request_queue *q)
> 
> The kerneldoc requested last time would be really nice to have.
> Also, now that this is a public API killing the q argument and
> just using req->q would make the API easier to understand.

Oh, my missing kerneldoc is clearly a problem. We need a separate
argument for the request_queue because the q we want to count stats for
may not be the one providing the request. For nvme multipath, we want to
count stats against the head's request_queue, but the request comes from
the ns path, so we need both args.