> On Tue, Nov 01, 2022 at 11:11:34PM +0800, Jinlong Chen wrote: > > blk_mq_quiesce_queue_nowait() is now reasonably used by scsi_host_block() > > to avoid calling synchronize_rcu() for each LUN. We should not consider to > > remove it. > > I strongly disagree about this being a reasonable use. What SCSI did > there is a horrible hack that should have never been merged. The > right thing to do is the per-tag_set quiesce that we've been working > on. Ok, I guess I need to read the per-tag_set quiesce patch series. Thanks! Jinlong Chen