[PATCH v2 1/2] blk-mq: add tagset quiesce interface

[Sagi Grimberg]

>>>> iscsi defers network sends to a workqueue anyways, and no scsi lld sets
>>>> BLK_MQ_F_BLOCKING.
>>>
>>> Yes, but Mike had a series to implement a similar fast path as nvme-tcp
>>> as while ago that included supporting BLK_MQ_F_BLOCKING in the scsi
>>> midlayer.
>>
>> Hmmm, didn't see that, pointer?
> 
> https://www.spinics.net/lists/linux-scsi/msg170849.html

Nice.

>>>   We'll also need it to convert the paride drivers to libata,
>>> but those are single request_queue per tag_set as far as I know.
>>
>> didn't see paride even attempting to quiesce...
> 
> The block layer might.  But it really does not matter for our
> considerations here..

Right.