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=-0.8 required=3.0 tests=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 1A182C32750 for ; Tue, 13 Aug 2019 09:48:09 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B64B020679 for ; Tue, 13 Aug 2019 09:48:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B64B020679 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3B54B6B0005; Tue, 13 Aug 2019 05:48:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 365956B0006; Tue, 13 Aug 2019 05:48:08 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 27B5F6B0007; Tue, 13 Aug 2019 05:48:08 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0191.hostedemail.com [216.40.44.191]) by kanga.kvack.org (Postfix) with ESMTP id 06F696B0005 for ; Tue, 13 Aug 2019 05:48:07 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 6CC1F181AC9B4 for ; Tue, 13 Aug 2019 09:48:07 +0000 (UTC) X-FDA: 75816928614.15.north60_63f2598af6c36 X-HE-Tag: north60_63f2598af6c36 X-Filterd-Recvd-Size: 3299 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [207.82.80.151]) by imf45.hostedemail.com (Postfix) with ESMTP for ; Tue, 13 Aug 2019 09:48:06 +0000 (UTC) Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-150-kKZsyMR6MtydRYGBEb95CQ-1; Tue, 13 Aug 2019 10:48:02 +0100 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Tue, 13 Aug 2019 10:48:01 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Tue, 13 Aug 2019 10:48:01 +0100 From: David Laight To: 'Joe Perches' , Nathan Chancellor , Nick Desaulniers CC: Nathan Huckleberry , Masahiro Yamada , Michal Marek , Linux Kbuild mailing list , LKML , Linux Memory Management List , clang-built-linux , "Gustavo A. R. Silva" Subject: RE: [PATCH v2] kbuild: Change fallthrough comments to attributes Thread-Topic: [PATCH v2] kbuild: Change fallthrough comments to attributes Thread-Index: AQHVUaVgEyLklNacm0CAPm1TaF5b6ab40/BA Date: Tue, 13 Aug 2019 09:48:01 +0000 Message-ID: <85e25647ae404bf38bc008ea914e08b3@AcuMS.aculab.com> References: <20190812214711.83710-1-nhuck@google.com> <20190812221416.139678-1-nhuck@google.com> <814c1b19141022946d3e0f7e24d69658d7a512e4.camel@perches.com> <20190813063327.GA46858@archlinux-threadripper> <3078e553a777976655f72718d088791363544caa.camel@perches.com> In-Reply-To: <3078e553a777976655f72718d088791363544caa.camel@perches.com> Accept-Language: en-GB, en-US Content-Language: 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-MC-Unique: kKZsyMR6MtydRYGBEb95CQ-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000002, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Joe Perches > Sent: 13 August 2019 08:05 ... > The afs ones seem to be because the last comment in the block > is not the fallthrough, but a description of the next case; >=20 > e.g.: from fs/afs/fsclient.c: >=20 > =09=09/* extract the volume name */ > =09case 3: > =09=09_debug("extract volname"); I'd change those to: =09case 3: /* extract the volume name */ Then the /* fall through */ would be fine. The /* FALLTHROUGH */ comment has been valid C syntax (for lint) for over 40 years. IMHO since C compilers are now doing all the checks that lint used to do, it should be using the same syntax. Both the [[]] and attribute forms look horrid. =09David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1= PT, UK Registration No: 1397386 (Wales)