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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 CF217C4361B for ; Mon, 7 Dec 2020 17:00:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A2CD023884 for ; Mon, 7 Dec 2020 17:00:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727756AbgLGRAO (ORCPT ); Mon, 7 Dec 2020 12:00:14 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:54034 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726089AbgLGRAO (ORCPT ); Mon, 7 Dec 2020 12:00:14 -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-55-PBlTjpb8PJSb9wLrXKeb-g-1; Mon, 07 Dec 2020 16:58:35 +0000 X-MC-Unique: PBlTjpb8PJSb9wLrXKeb-g-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; Mon, 7 Dec 2020 16:58:34 +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; Mon, 7 Dec 2020 16:58:34 +0000 From: David Laight To: 'Waiman Long' , Peter Zijlstra CC: "Eric W. Biederman" , "linux-kernel@vger.kernel.org" , Linus Torvalds , Ingo Molnar , Will Deacon , Jann Horn , Vasiliy Kulikov , Al Viro , Bernd Edlinger , Oleg Nesterov , "Christopher Yeoh" , Cyrill Gorcunov , "Sargun Dhillon" , Christian Brauner , Arnd Bergmann , Arnaldo Carvalho de Melo Subject: RE: [PATCH 2/3] rwsem: Implement down_read_interruptible Thread-Topic: [PATCH 2/3] rwsem: Implement down_read_interruptible Thread-Index: AQHWzK7TgKb+NsLWq0OuVEyoMuW4SKnr2Z6A Date: Mon, 7 Dec 2020 16:58:34 +0000 Message-ID: References: <87tut2bqik.fsf@x220.int.ebiederm.org> <87k0tybqfy.fsf@x220.int.ebiederm.org> <620f0908-c70a-9e54-e1b5-71d086b20756@redhat.com> <20201207090243.GE3040@hirez.programming.kicks-ass.net> <7be81903-14e3-7485-83e7-02e65e80e8c3@redhat.com> In-Reply-To: <7be81903-14e3-7485-83e7-02e65e80e8c3@redhat.com> 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 RnJvbTogV2FpbWFuIExvbmcgDQo+IFNlbnQ6IDA3IERlY2VtYmVyIDIwMjAgMTU6MzQNCj4gDQo+ IE9uIDEyLzcvMjAgNDowMiBBTSwgUGV0ZXIgWmlqbHN0cmEgd3JvdGU6DQo+ID4gT24gVGh1LCBE ZWMgMDMsIDIwMjAgYXQgMDg6NTk6MTNQTSAtMDUwMCwgV2FpbWFuIExvbmcgd3JvdGU6DQo+ID4+ IE9uIDEyLzMvMjAgMzoxMSBQTSwgRXJpYyBXLiBCaWVkZXJtYW4gd3JvdGU6DQo+ID4+PiArc3Rh dGljIGlubGluZSBpbnQgX19kb3duX3JlYWRfaW50ZXJydXB0aWJsZShzdHJ1Y3Qgcndfc2VtYXBo b3JlICpzZW0pDQo+ID4+PiArew0KPiA+Pj4gKwlpZiAoIXJ3c2VtX3JlYWRfdHJ5bG9jayhzZW0p KSB7DQo+ID4+PiArCQlpZiAoSVNfRVJSKHJ3c2VtX2Rvd25fcmVhZF9zbG93cGF0aChzZW0sIFRB U0tfSU5URVJSVVBUSUJMRSkpKQ0KPiA+Pj4gKwkJCXJldHVybiAtRUlOVFI7DQo+ID4+PiArCQlE RUJVR19SV1NFTVNfV0FSTl9PTighaXNfcndzZW1fcmVhZGVyX293bmVkKHNlbSksIHNlbSk7DQo+ ID4+PiArCX0gZWxzZSB7DQo+ID4+PiArCQlyd3NlbV9zZXRfcmVhZGVyX293bmVkKHNlbSk7DQo+ ID4+PiArCX0NCj4gPj4+ICsJcmV0dXJuIDA7DQo+ID4+PiArfQ0KPiA+Pj4gKw0KPiA+Pj4gICAg c3RhdGljIGlubGluZSBpbnQgX19kb3duX3JlYWRfa2lsbGFibGUoc3RydWN0IHJ3X3NlbWFwaG9y ZSAqc2VtKQ0KPiA+Pj4gICAgew0KPiA+Pj4gICAgCWlmICghcndzZW1fcmVhZF90cnlsb2NrKHNl bSkpIHsNCj4gPj4+IEBAIC0xNDk1LDYgKzE1MDcsMjAgQEAgdm9pZCBfX3NjaGVkIGRvd25fcmVh ZChzdHJ1Y3Qgcndfc2VtYXBob3JlICpzZW0pDQo+ID4+PiAgICB9DQo+ID4+PiAgICBFWFBPUlRf U1lNQk9MKGRvd25fcmVhZCk7DQo+ID4+PiAraW50IF9fc2NoZWQgZG93bl9yZWFkX2ludGVycnVw dGlibGUoc3RydWN0IHJ3X3NlbWFwaG9yZSAqc2VtKQ0KPiA+Pj4gK3sNCj4gPj4+ICsJbWlnaHRf c2xlZXAoKTsNCj4gPj4+ICsJcndzZW1fYWNxdWlyZV9yZWFkKCZzZW0tPmRlcF9tYXAsIDAsIDAs IF9SRVRfSVBfKTsNCj4gPj4+ICsNCj4gPj4+ICsJaWYgKExPQ0tfQ09OVEVOREVEX1JFVFVSTihz ZW0sIF9fZG93bl9yZWFkX3RyeWxvY2ssIF9fZG93bl9yZWFkX2ludGVycnVwdGlibGUpKSB7DQo+ ID4+PiArCQlyd3NlbV9yZWxlYXNlKCZzZW0tPmRlcF9tYXAsIF9SRVRfSVBfKTsNCj4gPj4+ICsJ CXJldHVybiAtRUlOVFI7DQo+ID4+PiArCX0NCj4gPj4+ICsNCj4gPj4+ICsJcmV0dXJuIDA7DQo+ ID4+PiArfQ0KPiA+Pj4gK0VYUE9SVF9TWU1CT0woZG93bl9yZWFkX2ludGVycnVwdGlibGUpOw0K PiA+Pj4gKw0KPiA+Pj4gICAgaW50IF9fc2NoZWQgZG93bl9yZWFkX2tpbGxhYmxlKHN0cnVjdCBy d19zZW1hcGhvcmUgKnNlbSkNCj4gPj4+ICAgIHsNCj4gPj4+ICAgIAltaWdodF9zbGVlcCgpOw0K PiA+PiBBY2tlZC1ieTogV2FpbWFuIExvbmcgPGxvbmdtYW5AcmVkaGF0LmNvbT4NCj4gPiBZZWFo LCB0aGF0IHNlZW1zIGNvcnJlY3QuLiBUaGVyZSdzIGFuIHVuZm9ydHVuYXRlIGFtb3VudCBvZiBj b3B5LXBhc3RlDQo+ID4gdGhlcmUgdGhvdWdoLg0KPiA+DQo+ID4gRG8gd2Ugd2FudCB0byBmb2xs b3cgdGhhdCB1cCB3aXRoIHNvbWV0aGluZyBsaWtlIHRoaXM/DQo+IA0KPiBJIGFtIGFjdHVhbGx5 IHRoaW5raW5nIGFib3V0IHNpbWlsYXIgc3RyZWFtbGluaW5nIG9uY2UgdGhlIHBhdGNoIGxhbmRz Lg0KPiANCj4gWW91ciBzdWdnZXN0ZWQgY2hhbmdlcyBsb29rIGZpbmUgdG8gbWUuDQoNCkhvdyBt dWNoIG1vcmUgZGlmZmljdWx0IHdvdWxkIGl0IGJlIHRvIGFsc28gYWRkIGEgdGltZW91dCBvcHRp b24/DQpJIGxvb2tlZCBhdCBhZGRpbmcgb25lIHRvIHRoZSBtdXRleCBjb2RlIC0gYW5kIGZlbGwg aW50byBhIGJpZyBwaWxlDQpvZiByZXBsaWNhdGVkIGNvZGUuDQoNCklTVE0gdGhhdCBvbmUgdGhl IGluaXRpYWwgbG9ja2VkIGV4Y2hhbmdlIChhbmQgc3BpbikgZmFpbHMgYSBmZXcNCmV4dHJhIGlu c3RydWN0aW9ucyB3aGVuIGhlYWRpbmcgZm9yIHRoZSBzbGVlcCBkb24ndCByZWFsbHkgbWF0dGVy DQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9h ZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBO bzogMTM5NzM4NiAoV2FsZXMpDQo=