[PATCH 2/4] nvme-pci: update sqsize when adjusting the queue depth

[Sagi Grimberg]

>> But if you want to patches 1+2 to be taken before 3+4, I'd make sqsize
>> to be a 0's based value of q_depth after we subtract one entry for queue
>> wraparound. So others would not get affected from patches 1+2. Then in
>> one batch make all assignments to sqsize 1's based like in patch 3 and
>> change nvme_alloc_io_tagset at the same time.
> 
> 1 doe not make any difference in the 0s based vs not values,
> they just reduce the queue size by 1 intentionally.

Not sure who is they here...

Anyways, I guess we'll have to wait and see if someone happens to care
if his/hers effective queuing is reduced by 1 all of a sudden...