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 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 35AC8C4320E for ; Fri, 20 Aug 2021 08:30:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D901B61157 for ; Fri, 20 Aug 2021 08:30:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D901B61157 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 703786B0071; Fri, 20 Aug 2021 04:30:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6B37F6B0073; Fri, 20 Aug 2021 04:30:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 57AB96B0074; Fri, 20 Aug 2021 04:30:45 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0138.hostedemail.com [216.40.44.138]) by kanga.kvack.org (Postfix) with ESMTP id 3CA716B0071 for ; Fri, 20 Aug 2021 04:30:45 -0400 (EDT) Received: from smtpin34.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id BE2422AF0A for ; Fri, 20 Aug 2021 08:30:44 +0000 (UTC) X-FDA: 78494788008.34.032D091 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by imf19.hostedemail.com (Postfix) with ESMTP id 2CC6FB0000A7 for ; Fri, 20 Aug 2021 08:30:43 +0000 (UTC) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-274-2Q2jLTjjOQuEz4g5fh9Tsg-1; Fri, 20 Aug 2021 09:30:42 +0100 X-MC-Unique: 2Q2jLTjjOQuEz4g5fh9Tsg-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Fri, 20 Aug 2021 09:30:39 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.023; Fri, 20 Aug 2021 09:30:39 +0100 From: David Laight To: 'Linus Torvalds' , Jeff Layton CC: "Eric W. Biederman" , Matthew Wilcox , Andy Lutomirski , 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 , =?utf-8?B?Q2hyaXN0aWFuIEvDtm5pZw==?= , "linux-unionfs@vger.kernel.org" , Linux API , "the arch/x86 maintainers" , "" , Linux-MM , "Florian Weimer" , Michael Kerrisk Subject: RE: Removing Mandatory Locks Thread-Topic: Removing Mandatory Locks Thread-Index: AQHXlUolKQrpfCPkWUimXalbi9gnr6t8D3Ag Date: Fri, 20 Aug 2021 08:30:39 +0000 Message-ID: References: <20210812084348.6521-1-david@redhat.com> <87o8a2d0wf.fsf@disp2133> <60db2e61-6b00-44fa-b718-e4361fcc238c@www.fastmail.com> <87lf56bllc.fsf@disp2133> <87eeay8pqx.fsf@disp2133> <5b0d7c1e73ca43ef9ce6665fec6c4d7e@AcuMS.aculab.com> <87h7ft2j68.fsf@disp2133> <87k0kkxbjn.fsf_-_@disp2133> <0c2af732e4e9f74c9d20b09fc4b6cbae40351085.camel@kernel.org> <639d90212662cf5cdf80c71bbfec95907c70114a.camel@kernel.org> In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 2CC6FB0000A7 X-Stat-Signature: xxj4huj8i64kq4akqjfzy7stod4pz997 Authentication-Results: imf19.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=ACULAB.COM; spf=pass (imf19.hostedemail.com: domain of david.laight@aculab.com designates 185.58.85.151 as permitted sender) smtp.mailfrom=david.laight@aculab.com X-HE-Tag: 1629448243-17893 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: RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMTkgQXVndXN0IDIwMjEgMjM6MzMNCj4gDQo+ IE9uIFRodSwgQXVnIDE5LCAyMDIxIGF0IDI6NDMgUE0gSmVmZiBMYXl0b24gPGpsYXl0b25Aa2Vy bmVsLm9yZz4gd3JvdGU6DQo+ID4NCj4gPiBXaGF0IHNvcnQgb2YgYmlnLCB1Z2x5IHdhcm5pbmcg ZGlkIHlvdSBoYXZlIGluIG1pbmQ/DQo+IA0KPiBJIG9yaWdpbmFsbHkgdGhvdWdodCBXQVJOX09O X09OQ0UoKSBqdXN0IHRvIGdldCB0aGUgZGlzdHJvIGF1dG9tYXRpYw0KPiBlcnJvciBoYW5kbGlu ZyBpbnZvbHZlZCwgYnV0IGl0IHdvdWxkIHByb2JhYmx5IGJlIGEgYmlnIHByb2JsZW0gZm9yDQo+ IHRoZSBwZW9wbGUgd2hvIGVuZCB1cCBoYXZpbmcgcGFuaWMtb24td2FybiBvciBzb21ldGhpbmcu DQoNCkV2ZW4gcGFuaWMtb24tb29wcyBpcyBhIFBJVEEuDQpUb29rIHVzIHdlZWtzIHRvIHJlYWxp c2UgdGhhdCBhIGN1c3RvbWVyIHN5c3RlbSB0aGF0IHdhcyByYW5kb21seQ0KcmVib290aW5nIHdh cyAnanVzdCcgaGF2aW5nIGEgYm9yaW5nIE5VTEwgcG9pbnRlciBhY2Nlc3MuDQogDQo+IFNvIHBy b2JhYmx5IGp1c3QgYSAibWFrZSBpdCBhIGJpZyBib3giIHRoaW5nIHRoYXQgc3RhbmRzIG91dCwg a2luZCBvZg0KPiB3aGF0IGxvY2tkZXAgZXRjIGRvZXMgd2l0aA0KPiANCj4gICAgICAgICBwcl93 YXJuKCI9PT09PT0uLi49PT09XG4iKTsNCj4gDQo+IGFyb3VuZCB0aGUgbWVzc2FnZXMuLg0KPiAN Cj4gSSBkb24ndCBrbm93IGlmIGRpc3Ryb3MgaGF2ZSBzb21lIHBhdHRlcm4gd2UgY291bGQgdXNl IHRoYXQgd291bGQgZW5kDQo+IHVwIGJlaW5nIHNvbWV0aGluZyB0aGF0IGdldHMgcmVwb3J0ZWQg dG8gdGhlIHVzZXI/DQoNCldpbGwgdXNlcnMgZXZlbiBzZWUgaXQ/DQpBIGxvdCBvZiByZWNlbnQg ZGlzdHJvIGluc3RhbGxzIHRyeSB2ZXJ5IGhhcmQgdG8gaGlkZSBhbGwgdGhlIGtlcm5lbA0KbWVz c2FnZXMuDQpPVE9IIEkgZ3Vlc3MgJy1vIG1hbmQnIGlzIHVubGlrZWx5IHRvIGJlIHNldCBvbiBh bnkgb2YgdGhvc2Ugc3lzdGVtcy4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBM YWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBU LCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==