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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BEEFC76188 for ; Wed, 5 Apr 2023 13:55:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238131AbjDENzd (ORCPT ); Wed, 5 Apr 2023 09:55:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237197AbjDENzb (ORCPT ); Wed, 5 Apr 2023 09:55:31 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6AEA525D for ; Wed, 5 Apr 2023 06:55:24 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-278-9dLbTwq9NiGEBp4om-cqZw-1; Wed, 05 Apr 2023 14:55:21 +0100 X-MC-Unique: 9dLbTwq9NiGEBp4om-cqZw-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Wed, 5 Apr 2023 14:55:19 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Wed, 5 Apr 2023 14:55:19 +0100 From: David Laight To: 'chi wu' CC: Christoph Hellwig , "tytso@mit.edu" , "adilger.kernel@dilger.ca" , "ojaswin@linux.ibm.com" , "ritesh.list@gmail.com" , "linux-ext4@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] ext4: simplify 32bit calculation of lblk Thread-Topic: [PATCH] ext4: simplify 32bit calculation of lblk Thread-Index: AQHZZ5teJkhs7xpdHUusWw1uRGHlOq8ckyfAgAAGhICAACKd0A== Date: Wed, 5 Apr 2023 13:55:19 +0000 Message-ID: <1ee0b5d2914046f28616c0fc8beba237@AcuMS.aculab.com> References: <20230403135304.19858-1-wuchi.zero@gmail.com> 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogY2hpIHd1DQo+IFNlbnQ6IDA1IEFwcmlsIDIwMjMgMTM6NDgNCj4gDQo+IERhdmlkIExh aWdodCA8RGF2aWQuTGFpZ2h0QGFjdWxhYi5jb20+IOS6jjIwMjPlubQ05pyINeaXpeWRqOS4iSAx OTo0M+WGmemBk++8mg0KPiA+DQo+ID4gRnJvbTogY2hpIHd1DQo+ID4gPiBTZW50OiAwNSBBcHJp bCAyMDIzIDA5OjQ4DQo+ID4gPg0KPiA+ID4gQ2hyaXN0b3BoIEhlbGx3aWcgPGhjaEBpbmZyYWRl YWQub3JnPiDkuo4yMDIz5bm0NOaciDXml6XlkajkuIkgMTM6NDDlhpnpgZPvvJoNCj4gPiA+ID4N Cj4gPiA+ID4gT24gTW9uLCBBcHIgMDMsIDIwMjMgYXQgMDk6NTM6MDRQTSArMDgwMCwgd3VjaGkg d3JvdGU6DQo+ID4gPiA+ID4gLSAgICAgICAgICAgICAgICAgICAgIGlmIChibG9jayA+IGV4dF9i bG9jaykNCj4gPiA+ID4gPiAtICAgICAgICAgICAgICAgICAgICAgICAgICAgICByZXR1cm4gZXh0 X3BibGsgKyAoYmxvY2sgLSBleHRfYmxvY2spOw0KPiA+ID4gPiA+IC0gICAgICAgICAgICAgICAg ICAgICBlbHNlDQo+ID4gPiA+ID4gLSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgcmV0dXJu IGV4dF9wYmxrIC0gKGV4dF9ibG9jayAtIGJsb2NrKTsNCj4gPiA+ID4gPiArICAgICAgICAgICAg ICAgICAgICAgcmV0dXJuIGV4dF9wYmxrICsgKChzaWduZWQgbG9uZyBsb25nKWJsb2NrIC0gKHNp Z25lZCBsb25nDQo+IGxvbmcpZXh0X2Jsb2NrKTsNCj4gPiA+ID4NCj4gPiA+ID4gQW5kIHdoYXQg ZXhhY3RseSBpcyB0aGUgdmFsdWUgYWRkIGhlcmUsIGV4Y2VwdCBmb3IgdHVybmluZyBhbiBlYXN5 DQo+ID4gPiA+IHRvIHBhcnNlIHN0YXRlbWVudCBpbnRvIGEgY29tcGxleCBleHByZXNzaW9uIHVz aW5nIGNhc3RzPw0KPiA+ID4gPg0KPiA+ID4gWWVz77yMaXQgd2lsbCBiZSBtb3JlIGNvbXBsZXgu IHRoZSBvcmlnaW5hbCBpbnRlbnRpb24gaXMgdG8gcmVkdWNlIHRoZQ0KPiA+ID4gY29uZGl0aW9u YWwgYnJhbmNoLg0KPiA+DQo+ID4gV2hhdCBpcyB3cm9uZyB3aXRoIGp1c3Q6DQo+ID4gICAgICAg ICByZXR1cm4gZXh0X3BibGsgKyBibG9jayAtIGV4dF9ibG9jazsNCj4gPiAoNjRiaXQgKyAzMmJp dCAtIDMyYml0KQ0KPiA+DQoNCj4gb2gsIEl0J3MgbXkgZmF1bHQuIEkgYW0gdHJhcHBlZCBpbiB0 aGF0IGV4dF9wYmxrICsgYmxvY2sgbWF5IG92ZXJmbG93LA0KPiBidXQgaXQgaXMgb2sgaGVyZS4g dGhhbmtzLg0KDQpUaGF0IGRvZXNuJ3QgbWF0dGVyLCBpdCB3aWxsICd1bi1vdmVyZmxvdycgd2hl biBleHRfYmxvY2sgaXMgc3VidHJhY3RlZC4NCllvdSBkbyBuZWVkIHRoZSAnKycgdG8gaGFwcGVu IGJlZm9yZSB0aGUgJy0nLCBvayBiZWNhdXNlICsvLSBncm91cA0KbGVmdCB0byByaWdodCBpbiBD Lg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJv YWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24g Tm86IDEzOTczODYgKFdhbGVzKQ0K