On Wed, Dec 09, 2020 at 08:36:45AM +0000, Christoph Hellwig wrote: > > This is making the iter type even more of a mess than it already is. > I think we at least need placeholders for 0/1 here and an explicit > flags namespace, preferably after the types. > > Then again I'd much prefer if we didn't even add the flag or at best > just add it for a short-term transition and move everyone over to the > new scheme. Otherwise the amount of different interfaces and supporting > code keeps exploding.
Yes. The only problem I see is how to describe the rules - "bdev-backed iterators need the bvec array to stay allocated until IO completes"? And one way or another, that needs to be documented - D/f/porting with "mandatory" for priority.
