Received: by 2002:a05:6a10:1d13:0:0:0:0 with SMTP id pp19csp1465401pxb; Fri, 20 Aug 2021 06:15:26 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwV7vvRzaoYYMhRLh0hlZzKNNm5pQ/h4VoX+7P/v+Q6KJCRAMrcwKhXYIriz9Hq80hizgLA X-Received: by 2002:a05:6602:2211:: with SMTP id n17mr15841661ion.142.1629465326250; Fri, 20 Aug 2021 06:15:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1629465326; cv=none; d=google.com; s=arc-20160816; b=pzSVMBP9pQOw0PEsqnuDC246AAHRquD6IlkwOcfwR854+oHgt5sZe5V7LTHZP2yoYg to73iW54wT3nO/NZBEynLvVlUgypQnCkZK7HEbEFXRFRZFwHHJumNsRYPzJmCviK95R/ WUkg8N/QUpu0+e+PWq2FkPYc+5fjIKsbTiIQqFpvokFrZ1FEotSRq0i2GvFWIo3t5DNb xM5Y9I87Vit7l5SO+5OWuRX0nIqq/ygFpRY0+XaaxRE3/qqzYRDp3Qsvka1UY/fISd5Z CTpWACi6lNOBiOIIs/2Jr4SvSFaVfFd8Yid+/bV1oyKUA81pdfi3fOFLUJHMs6RtVqtX gqUg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=+7OVNcuy7F2wTLizn3F0h6v6yQCDedpeHSLlf6p/+YA=; b=hVPl/aDznfsSNBpGtqyiwxSuLm/Q5imf/vfyDkZoTY85vaZeOhFVUC/IDSlbOZfeGY a7/JsdnFsr/uZb5D09sDAKkWO/y8pJRfEeb9IHJtsmtjWIVDLPcgto7XteP7PR5X7snn QCEAxc9E7UIbs6DSYjVYVpYHQikZ08S8HensTFbQdE+4Ew9tB6iUi2iQkJiHMA+Hh2bB PiYXaiOcsNfwKBxiVJz2yJLC/frqWYdujm7ruEpJZPE5KswZHSInhr/pLwOj8+dL8rjp Rcoi8Iw2PkXNW+3O4b9Pj6dDsNTPtnsNYMgmlYgjE9RAZt/NGW+bCyW5ME3J+wXGHTWC 1Qvg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id l8si6648217ilt.110.2021.08.20.06.15.13; Fri, 20 Aug 2021 06:15:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240685AbhHTNNj (ORCPT + 99 others); Fri, 20 Aug 2021 09:13:39 -0400 Received: from wtarreau.pck.nerim.net ([62.212.114.60]:37048 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238510AbhHTNNi (ORCPT ); Fri, 20 Aug 2021 09:13:38 -0400 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) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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