linux-kernel - Re: [PATCH] fs/pipe: allow sendfile() to pipe again

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Message-ID: <CAHk-=wh+oPAvdy-Mehtxs69K0xu=WuPMxKhaafxPLTi8=5vf2g@mail.gmail.com>
Date:   Mon, 25 Jan 2021 12:34:15 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Johannes Berg <johannes@...solutions.net>
Cc:     Al Viro <viro@...iv.linux.org.uk>, Christoph Hellwig <hch@....de>,
        Oliver Giles <ohw.giles@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] fs/pipe: allow sendfile() to pipe again

On Mon, Jan 25, 2021 at 1:16 AM Johannes Berg <johannes@...solutions.net> wrote:
>
> Mostly for the record, since it looks like we'll have a proper
> fix without another intermediate pipe. However, this fixes the
> regression for now.

I've applied this anyway.

We'll see how big Al's proper fix ends up being, and depending on that
this one-liner might just be the right thing for stable anyway.

And if Al's patch ends up being small, simple and clean, this
one-liner won't matter, but it's not like there's any real downside to
it.

           Linus