[PATCH v4 6/8] nvme-fc: fix controller reset hang during traffic

[Sagi Grimberg]

> On Wed, Aug 04, 2021 at 09:23:49AM +0200, Hannes Reinecke wrote:
>> There still is now an imbalance, as we're always calling
>> 'nvme_unfreeze()' (irrespective on the number of queues), but will only
>> call 'nvme_start_freeze()' if we have more than one queue.
>>
>> This might lead to an imbalance on the mq_freeze_depth counter.
>> Wouldn't it be better to move the call to 'nvme_start_freeze()' out of
>> the if() condition to avoid the imbalance?
> 
> What about something like nmve_is_frozen() which would avoid the tracking
> of the queue state open coded as it is right?

Why is there a conditional freeze?