From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0A1BC2B9F4 for ; Mon, 28 Jun 2021 07:31:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB1F361AC0 for ; Mon, 28 Jun 2021 07:31:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232418AbhF1HeS (ORCPT ); Mon, 28 Jun 2021 03:34:18 -0400 Received: from mail-ua1-f50.google.com ([209.85.222.50]:47006 "EHLO mail-ua1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232312AbhF1HeO (ORCPT ); Mon, 28 Jun 2021 03:34:14 -0400 Received: by mail-ua1-f50.google.com with SMTP id x37so2142551uac.13; Mon, 28 Jun 2021 00:31:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=YwIJEG/rO0Ceg2ym/ezfAo5dwUkYJUNngLzGb8y4q34=; b=TZrn3J1nkgSsIYp5BrAGZ13uiO0UnOBvRiq+ZhmD4NL0iaCRChNO0J6o7/2CnOavc+ v/mqysX6dt4Bs6YPv/+Ynr6cNjTRpk3nAl53kqvAapksERUHxu39hWe5ziMjhR/C7TCN IesIG8Kr9NJDyNTW5H6nAAZex2+8vVg8MEx3aAK48Ge5kmQjm49AHmcnJ2DRQurx/qnH 1H0oaAKd6PVCa0AxNds/+fLE04Odc5dW9+DJ81mbZgxFZnW0v4njRxOK80nDO/nvYXH7 pnyoVacC0Vv3MElWT1ZT07cKUt597hRmqj2O/sqSq1WXRjP619/wErhwJoaN1+6T4PdY oKNw== X-Gm-Message-State: AOAM530bEsSV1GATZlyak6MoGXtn5T6RW4LUTpuBt0lHHzyL8Ge2XPaX XWtUL6mwjVfrpzviT/Au87lNly8OyDWA5etEY2M= X-Google-Smtp-Source: ABdhPJzYCFkqI6XO8XkluCeuBx9LnwBi5juJUkv7ROdktEW/OX3bMPqqTtRpjrN4il7UKs8a0PGwlEAC4EpisNoB+x4= X-Received: by 2002:ab0:647:: with SMTP id f65mr19209348uaf.4.1624865507461; Mon, 28 Jun 2021 00:31:47 -0700 (PDT) MIME-Version: 1.0 References: <87a6njf0ia.fsf@disp2133> <87tulpbp19.fsf@disp2133> <87zgvgabw1.fsf@disp2133> <875yy3850g.fsf_-_@disp2133> <6e283d24-7121-ae7c-d5ad-558f85858a09@gmail.com> In-Reply-To: <6e283d24-7121-ae7c-d5ad-558f85858a09@gmail.com> From: Geert Uytterhoeven Date: Mon, 28 Jun 2021 09:31:36 +0200 Message-ID: Subject: Re: [PATCH 0/9] Refactoring exit To: Michael Schmitz Cc: Al Viro , "Eric W. Biederman" , Linus Torvalds , linux-arch , Jens Axboe , Oleg Nesterov , Linux Kernel Mailing List , Richard Henderson , Ivan Kokshaysky , Matt Turner , alpha , linux-m68k , Arnd Bergmann , Tejun Heo , Kees Cook Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Michael, On Mon, Jun 28, 2021 at 1:00 AM Michael Schmitz wrote: > On 28/06/21 10:13 am, Al Viro wrote: > > On Thu, Jun 24, 2021 at 10:45:23PM +0000, Al Viro wrote: > > > >> 13) there's bdflush(1, whatever), which is equivalent to exit(0). > >> IMO it's long past the time to simply remove the sucker. > > Incidentally, calling that from ptraced process on alpha leads to > > the same headache for tracer. _If_ we leave it around, this is > > another candidate for "hit yourself with that special signal" - > > both alpha and m68k have that syscall, and IMO adding an asm > > wrapper for that one is over the top. > > > > Said that, we really ought to bury that thing: > > > > commit 2f268ee88abb33968501a44368db55c63adaad40 > > Author: Andrew Morton > > Date: Sat Dec 14 03:16:29 2002 -0800 > > > > [PATCH] deprecate use of bdflush() > > > > Patch from Robert Love > > > > We can never get rid of it if we do not deprecate it - so do so and > > print a stern warning to those who still run bdflush daemons. > > > > Deprecated for 18.5 years by now - I seriously suspect that we have > > some contributors younger than that... > > Haven't found that warning in over 7 years' worth of console logs, and > I'm a good candidate for running the oldest userland in existence for m68k. > > Time to let it go. The warning is printed when using filesys-ELF-2.0.x-1400K-2.gz, which is a very old ramdisk from right after the m68k a.out to ELF transition: warning: process `update' used the obsolete bdflush system call Fix your initscripts? I still boot it, once in a while. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds