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 CD024C761A6 for ; Wed, 5 Apr 2023 11:45:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237946AbjDELpJ (ORCPT ); Wed, 5 Apr 2023 07:45:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237804AbjDELpG (ORCPT ); Wed, 5 Apr 2023 07:45:06 -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 B96BC4480 for ; Wed, 5 Apr 2023 04:44:40 -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-246-6ghQMl58PVCD9K9Rjt0DSg-1; Wed, 05 Apr 2023 12:43:49 +0100 X-MC-Unique: 6ghQMl58PVCD9K9Rjt0DSg-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 12:43:47 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Wed, 5 Apr 2023 12:43:47 +0100 From: David Laight To: 'chi wu' , Christoph Hellwig CC: "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: AQHZZ5teJkhs7xpdHUusWw1uRGHlOq8ckyfA Date: Wed, 5 Apr 2023 11:43:47 +0000 Message-ID: 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+IFNlbnQ6IDA1IEFwcmlsIDIwMjMgMDk6NDgNCj4gDQo+IENocmlzdG9w aCBIZWxsd2lnIDxoY2hAaW5mcmFkZWFkLm9yZz4g5LqOMjAyM+W5tDTmnIg15pel5ZGo5LiJIDEz OjQw5YaZ6YGT77yaDQo+ID4NCj4gPiBPbiBNb24sIEFwciAwMywgMjAyMyBhdCAwOTo1MzowNFBN ICswODAwLCB3dWNoaSB3cm90ZToNCj4gPiA+IC0gICAgICAgICAgICAgICAgICAgICBpZiAoYmxv Y2sgPiBleHRfYmxvY2spDQo+ID4gPiAtICAgICAgICAgICAgICAgICAgICAgICAgICAgICByZXR1 cm4gZXh0X3BibGsgKyAoYmxvY2sgLSBleHRfYmxvY2spOw0KPiA+ID4gLSAgICAgICAgICAgICAg ICAgICAgIGVsc2UNCj4gPiA+IC0gICAgICAgICAgICAgICAgICAgICAgICAgICAgIHJldHVybiBl eHRfcGJsayAtIChleHRfYmxvY2sgLSBibG9jayk7DQo+ID4gPiArICAgICAgICAgICAgICAgICAg ICAgcmV0dXJuIGV4dF9wYmxrICsgKChzaWduZWQgbG9uZyBsb25nKWJsb2NrIC0gKHNpZ25lZCBs b25nIGxvbmcpZXh0X2Jsb2NrKTsNCj4gPg0KPiA+IEFuZCB3aGF0IGV4YWN0bHkgaXMgdGhlIHZh bHVlIGFkZCBoZXJlLCBleGNlcHQgZm9yIHR1cm5pbmcgYW4gZWFzeQ0KPiA+IHRvIHBhcnNlIHN0 YXRlbWVudCBpbnRvIGEgY29tcGxleCBleHByZXNzaW9uIHVzaW5nIGNhc3RzPw0KPiA+DQo+IFll c++8jGl0IHdpbGwgYmUgbW9yZSBjb21wbGV4LiB0aGUgb3JpZ2luYWwgaW50ZW50aW9uIGlzIHRv IHJlZHVjZSB0aGUNCj4gY29uZGl0aW9uYWwgYnJhbmNoLg0KDQpXaGF0IGlzIHdyb25nIHdpdGgg anVzdDoNCglyZXR1cm4gZXh0X3BibGsgKyBibG9jayAtIGV4dF9ibG9jazsNCig2NGJpdCArIDMy Yml0IC0gMzJiaXQpDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUs IEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJl Z2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=