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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 754AAC432BE for ; Fri, 20 Aug 2021 13:12:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D9992610D2 for ; Fri, 20 Aug 2021 13:12:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D9992610D2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=1wt.eu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 307C06B0071; Fri, 20 Aug 2021 09:12:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2B89A6B0072; Fri, 20 Aug 2021 09:12:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 17FC08D0001; Fri, 20 Aug 2021 09:12:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0230.hostedemail.com [216.40.44.230]) by kanga.kvack.org (Postfix) with ESMTP id F0B8E6B0071 for ; Fri, 20 Aug 2021 09:12:35 -0400 (EDT) Received: from smtpin36.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 9DDFB1844CAC1 for ; Fri, 20 Aug 2021 13:12:35 +0000 (UTC) X-FDA: 78495498270.36.9A91E61 Received: from 1wt.eu (wtarreau.pck.nerim.net [62.212.114.60]) by imf20.hostedemail.com (Postfix) with ESMTP id D6664D0000B0 for ; Fri, 20 Aug 2021 13:12:34 +0000 (UTC) Received: (from willy@localhost) by pcw.home.local (8.15.2/8.15.2/Submit) id 17KDBMp3024667; Fri, 20 Aug 2021 15:11:22 +0200 Date: Fri, 20 Aug 2021 15:11:22 +0200 From: Willy Tarreau To: Jeff Layton Cc: Amir Goldstein , Linus Torvalds , "Eric W. Biederman" , Matthew Wilcox , Andy Lutomirski , David Laight , David Hildenbrand , Linux Kernel Mailing List , Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Al Viro , Alexey Dobriyan , Steven Rostedt , "Peter Zijlstra (Intel)" , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Petr Mladek , Sergey Senozhatsky , Andy Shevchenko , Rasmus Villemoes , Kees Cook , Greg Ungerer , Geert Uytterhoeven , Mike Rapoport , Vlastimil Babka , Vincenzo Frascino , Chinwen Chang , Michel Lespinasse , Catalin Marinas , Huang Ying , Jann Horn , Feng Tang , Kevin Brodsky , Michael Ellerman , Shawn Anastasio , Steven Price , Nicholas Piggin , Christian Brauner , Jens Axboe , Gabriel Krisman Bertazi , Peter Xu , Suren Baghdasaryan , Shakeel Butt , Marco Elver , Daniel Jordan , Nicolas Viennot , Thomas Cedeno , Collin Fijalkovich , Michal Hocko , Miklos Szeredi , Chengguang Xu , Christian =?iso-8859-1?Q?K=F6nig?= , "linux-unionfs@vger.kernel.org" , Linux API , the arch/x86 maintainers , "" , Linux-MM , Florian Weimer , Michael Kerrisk Subject: Re: Removing Mandatory Locks Message-ID: <20210820131122.GA24659@1wt.eu> References: <87k0kkxbjn.fsf_-_@disp2133> <0c2af732e4e9f74c9d20b09fc4b6cbae40351085.camel@kernel.org> <20210820123810.GE22171@1wt.eu> <765d446cc4190575ab400a3a8038db658196b4bf.camel@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <765d446cc4190575ab400a3a8038db658196b4bf.camel@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: D6664D0000B0 X-Stat-Signature: 7mtrrbcg7m8rds99ax6muihsx74mbzzx Authentication-Results: imf20.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf20.hostedemail.com: domain of w@1wt.eu designates 62.212.114.60 as permitted sender) smtp.mailfrom=w@1wt.eu X-HE-Tag: 1629465154-269450 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Aug 20, 2021 at 09:03:16AM -0400, Jeff Layton wrote: > Good point. It wouldn't hurt to push such a warning into stable kernels > at the same time. There always is a lag when we do something like this > before some downstream user notices. Yes, that's why I proposed this. A warning can be backported into stable without big consequences except warning future victims... Willy