linux-kernel - Re: [PATCH v3] tty: tty_io: remove hung_up_tty

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Message-ID: <CAHk-=wh33VL0v-fymirrB+i4pyqQoK0==4j2FW0=mLW2B_kpsg@mail.gmail.com>
Date: Thu, 2 May 2024 18:12:12 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Cc: Marco Elver <elver@...gle.com>, paulmck@...nel.org, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Dmitry Vyukov <dvyukov@...gle.com>, 
	syzbot <syzbot+b7c3ba8cdc2f6cf83c21@...kaller.appspotmail.com>, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com, 
	Nathan Chancellor <nathan@...nel.org>, Arnd Bergmann <arnd@...nel.org>, Al Viro <viro@...iv.linux.org.uk>, 
	Jiri Slaby <jirislaby@...nel.org>
Subject: Re: [PATCH v3] tty: tty_io: remove hung_up_tty_fops

On Thu, 2 May 2024 at 16:54, Tetsuo Handa
<penguin-kernel@...ove.sakura.ne.jp> wrote:
>
> debugfs (or maybe any filesystems that wraps f_op) caches filp->f_op into
> private data

That's just for debugfs uses. If you somehow try to do that on a tty,
you are quite welcome to keep both broken pieces.

               Linus