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 EFAFBC432BE for ; Fri, 27 Aug 2021 08:22:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF79860F58 for ; Fri, 27 Aug 2021 08:22:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244577AbhH0IXC (ORCPT ); Fri, 27 Aug 2021 04:23:02 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:55141 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244524AbhH0IXC (ORCPT ); Fri, 27 Aug 2021 04:23:02 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-9-YAcLez3-PIu1MFGqx63a2w-1; Fri, 27 Aug 2021 09:22:11 +0100 X-MC-Unique: YAcLez3-PIu1MFGqx63a2w-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, 27 Aug 2021 09:22:07 +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, 27 Aug 2021 09:22:07 +0100 From: David Laight To: "'Eric W. Biederman'" , David Hildenbrand CC: Andy Lutomirski , Linus Torvalds , 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" , "Matthew Wilcox (Oracle)" , 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-fsdevel@vger.kernel.org" , Linux-MM , "Florian Weimer" , Michael Kerrisk Subject: RE: [PATCH v1 0/7] Remove in-tree usage of MAP_DENYWRITE Thread-Topic: [PATCH v1 0/7] Remove in-tree usage of MAP_DENYWRITE Thread-Index: AQHXmsfEnhLiH4wkgUCh4gMa99+VE6uHAcKg Date: Fri, 27 Aug 2021 08:22:07 +0000 Message-ID: <04e61e79ebad4a5d872d0a2b5be4c23d@AcuMS.aculab.com> 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> <0ed69079-9e13-a0f4-776c-1f24faa9daec@redhat.com> <87mtp3g8gv.fsf@disp2133> In-Reply-To: <87mtp3g8gv.fsf@disp2133> 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com 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 Precedence: bulk List-ID: X-Mailing-List: linux-unionfs@vger.kernel.org RnJvbTogRXJpYyBXLiBCaWVkZXJtYW4NCj4gU2VudDogMjYgQXVndXN0IDIwMjEgMjM6MTQNCi4u Lg0KPiBJIGFsc28gcmFuIGludG8gdGhpcyBpc3N1ZSBub3QgdG9vIGxvbmcgYWdvIHdoZW4gSSBy ZWZhY3RvcmVkIHRoZQ0KPiB1c2VybW9kZV9kcml2ZXIgY29kZS4gIE15IGNoYWxsZW5nZSB3YXMg bm90IGJlaW5nIGluIHVzZXJzcGFjZQ0KPiB0aGUgZGVsYXllZCBmcHV0IHdhcyBub3QgaGFwcGVu aW5nIGluIG15IGtlcm5lbCB0aHJlYWQuICBXaGljaCBtZWFudA0KPiB0aGF0IHdyaXRpbmcgdGhl IGZpbGUsIHRoZW4gY2xvc2luZyB0aGUgZmlsZSwgdGhlbiBleGVjaW5nIHRoZSBmaWxlDQo+IGNv bnNpc3RlbnRseSByZXBvcnRlZCAtRVRYVEJTWS4NCj4gDQo+IFRoZSBrZXJuZWwgY29kZSB3b3Vu ZCB1cCBkb2luZzoNCj4gCS8qIEZsdXNoIGRlbGF5ZWQgZnB1dCBzbyBleGVjIGNhbiBvcGVuIHRo ZSBmaWxlIHJlYWQtb25seSAqLw0KPiAJZmx1c2hfZGVsYXllZF9mcHV0KCk7DQo+IAl0YXNrX3dv cmtfcnVuKCk7DQo+IA0KPiBBcyBJIHJlYWQgdGhlIGNvZGUgdGhlIGRlbGF5IGZvciB1c2Vyc3Bh Y2UgZmlsZSBkZXNjcmlwdG9ycyBpcw0KPiBhbHdheXMgZG9uZSB3aXRoIHRhc2tfd29ya19hZGQs IHNvIHVzZXJzcGFjZSBzaG91bGQgbm90IGhpdA0KPiB0aGF0IGtpbmQgb2Ygc2lsbGluZXNzLCBh bmQgc2hvdWxkIGJlIGFibGUgdG8gYWN0dWFsbHkgY2xvc2UNCj4gdGhlIGZpbGUgZGVzY3JpcHRv ciBiZWZvcmUgdGhlIGV4ZWMuDQoNCklmIHRhc2tfd29ya19hZGQgZW5kcyB1cCBhZGRpbmcgaXQg dG8gYSB0YXNrIHRoYXQgaXMgYWxyZWFkeQ0KcnVubmluZyBvbiBhIGRpZmZlcmVudCBjcHUsIGFu ZCB0aGF0IGNwdSB0YWtlcyBhIGhhcmR3YXJlDQppbnRlcnJ1cHQgdGhhdCB0YWtlcyBzb21lIHRp bWUgYW5kL29yIHNjaGVkdWxlcyB0aGUgc29mdGludA0KY29kZSB0byBydW4gaW1tZWRpYXRlbHkg dGhlIGhhcmR3YXJlIGludGVycnVwdCBjb21wbGV0ZXMNCnRoZW4gaXQgbWF5IHdlbGwgYmUgcG9z c2libGUgZm9yIHVzZXJzcGFjZSB0byBoYXZlICdpc3N1ZXMnLg0KDQpBbnkgZmxhZ3MgYXNzb2Np YXRlZCB3aXRoIE9fREVOWV9XUklURSB3b3VsZCBuZWVkIHRvIGJlIGNsZWFyZWQNCnN5bmNocm9u b3VzbHkgaW4gdGhlIGNsb3NlKCkgcmF0aGVyIHRoZW4gaW4gYW55IGRlbGF5ZWQgZnB1dCgpLg0K DQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQs IE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86 IDEzOTczODYgKFdhbGVzKQ0K