Re: [PATCH v3 1/1] pipe: only enable the extra wake_up(rd_wait) for edge-triggered consumers

[Linus Torvalds]

On Thu, 30 Jul 2026 at 13:35, Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
>
> Again, contrary to the current comments this is not Epoll-only...

Sure it is. As far as we know, only epoll has ever *cared*.

Yes, you can show the semantics with io_uring, but do you have a user
application that actually cares?

The only reason that ugly hack exists is because we did have that
break user space. If we can get rid of th eugly hack for io_uring,
that would only be a good thing.

So this literally *should* be about only epoll unless you have a
report that io_uring users are equally broken and use that
shit-for-brains notion of edges that aren't edges that nobody sane
should ever use.

               Linus