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

Mateusz Guzik <[email protected]>
Newsgroups org.kernel.vger.linux-fsdevel,org.kernel.vger.io-uring,org.kernel.vger.linux-kernel
Message-ID <CAGudoHE=GjMRKGbip8nRUm34VUud_YSqGZJrfr+Vz6Qu22Mdaw@mail.gmail.com> 
On Thu, Jul 30, 2026 at 4:38 PM Oleg Nesterov <[email protected]> wrote:
> What exactly do you think the comment should say? I agree with anything in
> advance. I thought that "edge-triggered" provides enough info, but I would
> be happy to improve the docs.
>

how about: There is userspace depending on the extra wake up, see
commit 3a34b13a88caeb28 ("pipe: make pipe writes always wake up
readers") for details.

or whatever else which refers to the commit, no need for anything
fancy. the current commentary is definitely lame.

> And the helper's name? pipe_enable_poll_et() ?
>

perhaps pipe_enable_epoll_semantics()?
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