Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp3031360pxb; Fri, 12 Feb 2021 07:34:20 -0800 (PST) X-Google-Smtp-Source: ABdhPJwMq3kVrRreH8ceZp1RULepSi2x4X8CYL2QkJZiyrPMUU0hdx6rJX2wi5sKloPAFsIFMjdd X-Received: by 2002:a17:907:7605:: with SMTP id jx5mr3669697ejc.340.1613144059916; Fri, 12 Feb 2021 07:34:19 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1613144059; cv=none; d=google.com; s=arc-20160816; b=SsLgYZ8a1htoJzrlw+MwEjKMaHK7h1YnuFiDIsnPVgVkCQd1HB03TTIqNJqls4NECG psvtfBFlD3EYMtFjvtkmi0xiellh2kSDTvlWQvwQuXLRs9SdmSQGMz9OvH9lc6w29x8f Slt7Aqb/OssuqASF9DIBiXbT5M7cn4sQvScPZ8DCGFLHmnpLvt+MiOCj4huzYnfqqwhw SphDMIIPvroETSj8cB1BB8VoYcizBT5GK41yCCoT4CHjqeza7uErvH2qE5wm5d4u8cxC ZMlouuD969XqM6N7eO4sYyiVi134708cbF/HVZ9WKz7BG8i0Ag8NwqpsNZFQ2GfXbFEc SuTw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from; bh=XHf0qRFgDSHFkaMSIRT3Rjq764415iL4vrBNtYLvxdo=; b=qnthWBCYTQPccno8DikHMMVvlQhqiNVguGnVXe95aU7VNleQpztXjAJciaOOV4GZyA Oncju+5r6NHyRssnHim4ouCSVxs2O8tDLCDpGN6aII6fNdvthp1ragHBmKhN/ED+o2ew X5y8mOmz64WcVgOEAgCVVfw8ytCirS4qnxXVZ1hlR2GwSTwD2FHbO5suX75fmERDokG4 bTuOU+Zcxuig4YbPUnXodHV0sUyGwyU9puBlJdNEaq5bGQObJKm0EURhdsgCqRcOSGoZ rgKNyrO0tTIFy0qVzTcaddAOuALL6rsgx+F05OM7ldpQR1EdoBiNVGUJRkNCbq/xeMq4 R7mQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id lz12si1605052ejb.81.2021.02.12.07.33.56; Fri, 12 Feb 2021 07:34:19 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232096AbhBLPdB (ORCPT + 99 others); Fri, 12 Feb 2021 10:33:01 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:20606 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232081AbhBLPcz (ORCPT ); Fri, 12 Feb 2021 10:32:55 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-7-JP_7B2LuPXKpBjoyLqlaog-1; Fri, 12 Feb 2021 15:31:17 +0000 X-MC-Unique: JP_7B2LuPXKpBjoyLqlaog-1 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; Fri, 12 Feb 2021 15:31:16 +0000 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; Fri, 12 Feb 2021 15:31:16 +0000 From: David Laight To: 'Coly Li' , "Gustavo A. R. Silva" , Kent Overstreet , "David S. Miller" , Christina Jacob , Hariprasad Kelam , Sunil Goutham , Jesse Brandeburg CC: "linux-bcache@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH][next] bcache: Use 64-bit arithmetic instead of 32-bit Thread-Topic: [PATCH][next] bcache: Use 64-bit arithmetic instead of 32-bit Thread-Index: AQHXAUq33fUjMDIuaUm57r6l5bDb0apUpJ4g Date: Fri, 12 Feb 2021 15:31:16 +0000 Message-ID: <0a2eb2e143ad480cbce3f84c3c920b5f@AcuMS.aculab.com> References: <20210212125028.GA264620@embeddedor> 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 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-kernel@vger.kernel.org PiA+ICAJCWlmIChjLT5nY19zdGF0cy5pbl91c2UgPD0gQkNIX1dSSVRFQkFDS19GUkFHTUVOVF9U SFJFU0hPTERfTUlEKSB7DQo+ID4gLQkJCWZwX3Rlcm0gPSBkYy0+d3JpdGViYWNrX3JhdGVfZnBf dGVybV9sb3cgKg0KPiA+ICsJCQlmcF90ZXJtID0gKGludDY0X3QpZGMtPndyaXRlYmFja19yYXRl X2ZwX3Rlcm1fbG93ICoNCj4gPiAgCQkJKGMtPmdjX3N0YXRzLmluX3VzZSAtIEJDSF9XUklURUJB Q0tfRlJBR01FTlRfVEhSRVNIT0xEX0xPVyk7DQo+ID4gIAkJfSBlbHNlIGlmIChjLT5nY19zdGF0 cy5pbl91c2UgPD0gQkNIX1dSSVRFQkFDS19GUkFHTUVOVF9USFJFU0hPTERfSElHSCkgew0KPiA+ IC0JCQlmcF90ZXJtID0gZGMtPndyaXRlYmFja19yYXRlX2ZwX3Rlcm1fbWlkICoNCj4gPiArCQkJ ZnBfdGVybSA9IChpbnQ2NF90KWRjLT53cml0ZWJhY2tfcmF0ZV9mcF90ZXJtX21pZCAqDQo+ID4g IAkJCShjLT5nY19zdGF0cy5pbl91c2UgLSBCQ0hfV1JJVEVCQUNLX0ZSQUdNRU5UX1RIUkVTSE9M RF9NSUQpOw0KPiA+ICAJCX0gZWxzZSB7DQo+ID4gLQkJCWZwX3Rlcm0gPSBkYy0+d3JpdGViYWNr X3JhdGVfZnBfdGVybV9oaWdoICoNCj4gPiArCQkJZnBfdGVybSA9IChpbnQ2NF90KWRjLT53cml0 ZWJhY2tfcmF0ZV9mcF90ZXJtX2hpZ2ggKg0KPiA+ICAJCQkoYy0+Z2Nfc3RhdHMuaW5fdXNlIC0g QkNIX1dSSVRFQkFDS19GUkFHTUVOVF9USFJFU0hPTERfSElHSCk7DQo+ID4gIAkJfQ0KPiA+ICAJ CWZwcyA9IGRpdl9zNjQoZGlydHksIGRpcnR5X2J1Y2tldHMpICogZnBfdGVybTsNCj4gPg0KPiAN Cj4gSG1tLCBzaG91bGQgc3VjaCB0aGluZyBiZSBoYW5kbGVkIGJ5IGNvbXBpbGVyID8gIE90aGVy d2lzZSB0aGlzIGtpbmQgb2YNCj4gcG90ZW50aWFsIG92ZXJmbG93IGlzc3VlIHdpbGwgYmUgZW5k bGVzcyB0aW1lIHRvIHRpbWUuDQo+IA0KPiBJIGFtIG5vdCBhIGNvbXBpbGVyIGV4cGVydCwgc2hv dWxkIHdlIGhhdmUgdG8gZG8gc3VjaCBleHBsaWNpdCB0eXBlIGNhc3QNCj4gYWxsIHRoZSB0aW1l ID8NCg0KV2UgZG8gdG8gZ2V0IGEgNjRiaXQgcHJvZHVjdCBmcm9tIHR3byAzMmJpdCB2YWx1ZXMu DQpBbiBhbHRlcm5hdGl2ZSBmb3IgdGhlIGFib3ZlIHdvdWxkIGJlOg0KCQlmcF90ZXJtID0gYy0+ Z2Nfc3RhdHMuaW5fdXNlIC0gQkNIX1dSSVRFQkFDS19GUkFHTUVOVF9USFJFU0hPTERfSElHSDsN CgkJZnBfdGVybSAqPSBkYy0+d3JpdGViYWNrX3JhdGVfZnBfdGVybV9oaWdoOw0KDQpJIGhvcGUg QkNIX1dSSVRFQkFDS19GUkFHTUVOVF9USFJFU0hPTERfTE9XIGlzIHplcm8gOi0pDQoNCglEYXZp ZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQg RmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4 NiAoV2FsZXMpDQo=