On 6/16/21 2:42 PM, Olivier Langlois wrote: > On Tue, 2021-06-15 at 15:51 -0600, Jens Axboe wrote: >> Ditto for this one, don't see it in my email nor on the list. >> > I can resend you a private copy of this one but as Pavel pointed out, > it contains fatal flaws. > > So unless someone can tell me that the idea is interesting and has > potential and can give me some a hint or 2 about how to address the > challenges to fix the current flaws, it is pretty much a show stopper > to me and I think that I am going to let it go... It'd need to go through some other context, e.g. task context. task_work_add() + custom handler would work, either buf-select synchronisation can be reworked, but both would rather be bulky and not great. I'm more curious if we ever hit REQ_F_BUFFER_SELECTED branch in io_clean_op(), because it would just drop the id on the floor... It might use a WARN_ONCE. -- Pavel Begunkov
