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

[Christoph Hellwig]

On Wed, Oct 19, 2022 at 10:30:44AM +0300, Sagi Grimberg wrote:
> 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.  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.