[PATCH rfc 28/30] nvme: update tagset nr_hw_queues when reallocating io queues

[Sagi Grimberg]

>>> Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
>>
>> Could use a changelog.
>>
>> Ming: does this solve your problem of not seeing the new queues
>> after a qemu CPU hotplug + reset?
> 
> The issue I observed is that there isn't NVMe reset triggered after
> CPU becomes online.

This won't help with that.

> It may take a while since the test need to apply the whole patchset.
> Or is it fine to figure out one fix on this issue? Sagi?

No need, all this doesn't even touch pci for now...