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 7B844C4338F for ; Mon, 23 Aug 2021 12:28:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5575F604DB for ; Mon, 23 Aug 2021 12:28:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237017AbhHWM3Q (ORCPT ); Mon, 23 Aug 2021 08:29:16 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:57323 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233755AbhHWM3P (ORCPT ); Mon, 23 Aug 2021 08:29:15 -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-59-E63N1zkDM0uJNVkDIPANeg-1; Mon, 23 Aug 2021 13:28:31 +0100 X-MC-Unique: E63N1zkDM0uJNVkDIPANeg-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; Mon, 23 Aug 2021 13:28:30 +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; Mon, 23 Aug 2021 13:28:30 +0100 From: David Laight To: 'Jens Axboe' , Al Viro , "Pavel Begunkov" CC: "io-uring@vger.kernel.org" , linux-fsdevel , Palash Oswal , "Sudip Mukherjee" , "linux-kernel@vger.kernel.org" , "syzbot+9671693590ef5aad8953@syzkaller.appspotmail.com" Subject: RE: [PATCH v2 0/2] iter revert problems Thread-Topic: [PATCH v2 0/2] iter revert problems Thread-Index: AQHXluI3nOSi+NKXRk6vP8lbPLAAUauBBWNA Date: Mon, 23 Aug 2021 12:28:30 +0000 Message-ID: References: <3eaf5365-586d-700b-0277-e0889bfeb05d@gmail.com> <120e5aac-e056-1158-505b-fda41f1c99a5@kernel.dk> In-Reply-To: <120e5aac-e056-1158-505b-fda41f1c99a5@kernel.dk> 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: io-uring@vger.kernel.org RnJvbTogSmVucyBBeGJvZQ0KPiBTZW50OiAyMiBBdWd1c3QgMjAyMSAwMDoxNA0KPiANCj4gT24g OC8yMS8yMSA0OjI1IFBNLCBBbCBWaXJvIHdyb3RlOg0KPiA+IE9uIFNhdCwgQXVnIDIxLCAyMDIx IGF0IDAzOjI0OjI4UE0gKzAxMDAsIFBhdmVsIEJlZ3Vua292IHdyb3RlOg0KPiA+PiBPbiA4LzEy LzIxIDk6NDAgUE0sIFBhdmVsIEJlZ3Vua292IHdyb3RlOg0KPiA+Pj4gRm9yIHRoZSBidWcgZGVz Y3JpcHRpb24gc2VlIDIvMi4gQXMgbWVudGlvbmVkIHRoZXJlIHRoZSBjdXJyZW50IHByb2JsZW1z DQo+ID4+PiBpcyBiZWNhdXNlIG9mIGdlbmVyaWNfd3JpdGVfY2hlY2tzKCksIGJ1dCB0aGVyZSB3 YXMgYWxzbyBhIHNpbWlsYXIgY2FzZQ0KPiA+Pj4gZml4ZWQgaW4gNS4xMiwgd2hpY2ggc2hvdWxk IGhhdmUgYmVlbiB0cmlnZ2VyYWJsZSBieSBub3JtYWwNCj4gPj4+IHdyaXRlKDIpL3JlYWQoMikg YW5kIG90aGVycy4NCj4gPj4+DQo+ID4+PiBJdCBtYXkgYmUgYmV0dGVyIHRvIGVuZm9yY2UgcmVl eHBhbmRzIGFzIGEgbG9uZyB0ZXJtIHNvbHV0aW9uLCBidXQgZm9yDQo+ID4+PiBub3cgdGhpcyBw YXRjaHNldCBpcyBxdWlja2llciBhbmQgZWFzaWVyIHRvIGJhY2twb3J0Lg0KPiA+Pg0KPiA+PiBX ZSBuZWVkIHRvIGRvIHNvbWV0aGluZyB3aXRoIHRoaXMsIGhvcGVmdWxseSBzb29uLg0KPiA+DQo+ ID4gSSBzdGlsbCBkb24ndCBsaWtlIHRoYXQgYXBwcm9hY2ggOy0vICBJZiBhbnl0aGluZywgSSB3 b3VsZCByYXRoZXIgZG8NCj4gPiBzb21ldGhpbmcgbGlrZSB0aGlzLCBhbmQgdG8gaGVsbCB3aXRo IG9uZSBleHRyYSB3b3JkIG9uIHN0YWNrIGluDQo+ID4gc2V2ZXJhbCBmdW5jdGlvbnM7IGF0IGxl YXN0IHRoYXQgd2F5IHRoZSBzZW1hbnRpY3MgaXMgZWFzeSB0byBkZXNjcmliZS4NCj4gDQo+IFBh dmVsIHN1Z2dlc3RlZCB0aGlzIHZlcnkgYXBwcm9hY2ggaW5pdGlhbGx5IGFzIHdlbGwgd2hlbiB3 ZSBkaXNjdXNzZWQNCj4gaXQsIGFuZCBpZiB5b3UncmUgZmluZSB3aXRoIHRoZSBleHRyYSBzaXpl X3QsIGl0IGlzIGJ5IGZhciB0aGUgYmVzdCB3YXkNCj4gdG8gZ2V0IHRoaXMgZG9uZSBhbmQgbm90 IGhhdmUgYSB3b25reS9mcmFnaWxlIEFQSS4NCg0KQWxsICh3ZWxsIG1heWJlIGFsbW9zdCBhbGwp IHRoZSB1c2VycyBvZiBpb3ZfaXRlciBoYXZlIHRoZQ0Kc2hvcnQgaW92W10gY2FjaGUgYW5kIHRo ZSBwb2ludGVyIHRvIHRoZSBiaWcgaW92W10gdG8ga2ZyZWUoKQ0KYWxsb2NhdGVkIHRvZ2V0aGVy IHdpdGggdGhlIGlvdl9pdGVyIHN0cnVjdHVyZSBpdHNlbGYuDQpUaGVzZSBhcmUgYWxtb3N0IGFs d2F5cyBvbiBzdGFjay4NCg0KUHV0dGluZyB0aGUgd2hvbGUgbG90IHRvZ2V0aGVyIGluIGEgc2lu Z2xlIHN0cnVjdHVyZSB3b3VsZA0KbWFrZSB0aGUgY2FsbCBzZXF1ZW5jZXMgYSBsb3QgbGVzcyBj b21wbGV4IGFuZCB3b3VsZG4ndCB1c2UNCmFueSBtb3JlIHN0YWNrL2RhdGEgaXMgYWxtb3N0IGFs bCB0aGUgY2FzZXMuDQoNCkl0IHdvdWxkIGFsc28gbWVhbiB0aGF0IHRoZSAnaXRlcicgY29kZSBj b3VsZCBhbHdheXMgaGF2ZSBhIHBvaW50ZXINCnRvIHRoZSBiYXNlIG9mIHRoZSBvcmlnaW5hbCBp b3ZbXSBsaXN0Lg0KVGhlIGxhY2sgb2Ygd2hpY2ggaXMgcHJvYmFibHkgbWFrZXMgdGhlICdyZXZl cnQnIGNvZGUgaGFyZD8NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lk ZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0K UmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==