[PATCHv2] nvme-pci: enhance timeout kernel log

[Keith Busch]

On Tue, Dec 19, 2023 at 06:09:23PM +0200, Max Gurtovoy wrote:
> 
> 
> On 19/12/2023 16:15, Sagi Grimberg wrote:
> > 
> > > > -             "I/O %d QID %d timeout, completion polled\n",
> > > > +             "I/O tag %d QID %d timeout, completion polled\n",
> > > 
> > > Q: should we use the Linux term tag or the NVMe term command ID
> > > (or command_id) ?  I don't really care, just thinking out loud.
> > 
> > I was fine with neither tbh, but tag is better than command_id I
> > think.
> > 
> 
> In the current Keith code it is actually the tag.
> If you would like to print the cid please use: nvme_cid(req).
> 
> I guess the cid will be the useful value that we can compare to the
> wireshark or the target prints.

Yes! This currently prints the "tag" from blk-mq. I can change it to
print the encoded command_id in the SQE. Or both!