On Wed, Jul 18, 2018 at 09:30:11PM +0000, Bart Van Assche wrote: > On Wed, 2018-07-18 at 15:17 -0600, Keith Busch wrote: > > There are not that many blk-mq drivers, so we can go through them all. > > I'm not sure that's the right approach. I think it is the responsibility of > the block layer to handle races between completion handling and timeout > handling and that this is not the responsibility of e.g. a block driver. If > you look at e.g. the legacy block layer then you will see that it takes care > of this race and that legacy block drivers do not have to worry about this > race.
Reverting doesn't handle the race at all. It just ignores completions and puts the responsibility on the drivers to handle the race because that's what scsi wants to happen.
