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Message-ID: <84144f020607112327y48d9cccueb4c5e3904d6981@mail.gmail.com>
Date: Wed, 12 Jul 2006 09:27:46 +0300
From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Theodore Tso" <tytso@mit.edu>, "Jon Smirl" <jonsmirl@gmail.com>,
       "Alan Cox" <alan@lxorguk.ukuu.org.uk>,
       lkml <linux-kernel@vger.kernel.org>
Subject: Re: tty's use of file_list_lock and file_move
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Hi,

On 7/11/06, Theodore Tso <tytso@mit.edu> wrote:
> When I wrote the do_SAK code about 12-13 years ago, tty->tty_files
> didn't exist.  It should be safe to do this, but I'll echo Alan's
> comment.  We really ought to implement revoke(2) at the VFS layer, and
> then utilize to implement SAK and vhangup() functionality.

How is this supposed to work? What's stopping a process from
re-opening the file after revoke(2) has been called? Or am I missing
something here?

                                     Pekka