On Tue, 29 Mar 2022 at 22:03, Jens Axboe <axboe@xxxxxxxxx> wrote: > Can you try and repull the branch? I rebased the top two, so reset to > v5.17 first and then pull it. This one works in all cases, except if there's a link flag on the read. In that case the read itself will succeed but following requests on the link chain will fail with -ECANCELED. > BTW, I would not recommend using DRAIN, it's very expensive compared to > just a link. Particularly, using just a single link between the > open+read makes sense, and should be efficient. Don't link between all > of them, that's creating a more expensive dependency that doesn't make > any sense for your use case either. Should they both work? Of course, > and I think they will in the current branch. Merely stating that they > make no sense other than as an exercise-the-logic test case. Understood. Once all of these cases work, it should be possible to compare the performance of parallel vs. serial execution. Thanks, Miklos
