linux-kernel - Re: [WTF?] extremely old dead code

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Message-ID: <CA+55aFzfcxNNyGRyvOhqe8+tWB6mkRYQxbSYGVpd8x4jhgcsbQ@mail.gmail.com>
Date:   Tue, 11 Sep 2018 16:32:21 -1000
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [WTF?] extremely old dead code

On Mon, Sep 10, 2018 at 1:55 PM Al Viro <viro@...iv.linux.org.uk> wrote:
>
> Hadn't that sucker been dead code since 0.98.2?  What am I missing here?
> Note that this thing had quite a few functionality changes over those
> years; had they even been tested?

Looks about right to me. The only point that actually acts on FIONBIO
is the fs/ioctl.c code.

Impressively, the dead tty code looks perfectly correct to me too,
despite not  ever being triggered.

              Linus