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 B18AEC433EF for ; Fri, 17 Jun 2022 21:58:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237186AbiFQV6q (ORCPT ); Fri, 17 Jun 2022 17:58:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236063AbiFQV6m (ORCPT ); Fri, 17 Jun 2022 17:58:42 -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 ESMTP id 962A1313A6 for ; Fri, 17 Jun 2022 14:58:39 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-126-6cpkLsUGM_CHX1Zq4-ZYMw-1; Fri, 17 Jun 2022 22:58:36 +0100 X-MC-Unique: 6cpkLsUGM_CHX1Zq4-ZYMw-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 15.0.1497.36; Fri, 17 Jun 2022 22:58:35 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.036; Fri, 17 Jun 2022 22:58:35 +0100 From: David Laight To: 'Eric Dumazet' , Linus Torvalds CC: Peter Zijlstra , Waiman Long , Shakeel Butt , Eric Dumazet , linux-kernel , Ingo Molnar , Boqun Feng , Will Deacon , "Roman Penyaev" Subject: RE: [PATCH] locking/rwlocks: do not starve writers Thread-Topic: [PATCH] locking/rwlocks: do not starve writers Thread-Index: AQHYgoH9H7wjwRelWEixrawjXyXmm61UJB2A Date: Fri, 17 Jun 2022 21:58:35 +0000 Message-ID: <5b0e13f57d77408aad59b0e8f232da36@AcuMS.aculab.com> References: <20220617091039.2257083-1-eric.dumazet@gmail.com> <2dd754f9-3a79-ed17-e423-6b411c3afb69@redhat.com> <2730b855-8f99-5a9e-707e-697d3bd9811d@redhat.com> <7499dd05-30d1-669c-66b4-5cb06452b476@redhat.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 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 RnJvbTogRXJpYyBEdW1hemV0DQo+IFNlbnQ6IDE3IEp1bmUgMjAyMiAyMDozOQ0KLi4uDQo+IEkg YW0gY29udmVydGluZyBSQVcgc29ja2V0cyB0byBSQ1UuDQoNCkkgcHJlc3VtZSB0aGF0IGlzIGJl Y2F1c2UgeW91IGFyZSBzaG92aW5nIGEgbG90IG9mIHBhY2tldHMNCnRocm91Z2ggdGhlbT8NCg0K V2lsbCB0aGF0IHJlbW92ZSB0aGUgaG9ycmlkIGRlbGF5ZWQgZnJlZSBvZiB0aGUgcm91dGluZw0K dGFibGUgZW50cnkgdGhhdCBnZXRzIGNyZWF0ZWQgZm9yIElQdjQgd2l0aCAnaGRyaW5jJw0KYmVj YXVzZSB0aGUgYWRkcmVzcyBpbiB0aGUgcGFja2V0IG1pZ2h0IG5vdCBtYXRjaCB0aGF0DQppbiB0 aGUgYWRkcmVzcyBidWZmZXI/DQoNCkkndmUgc2VlbiB0aGUgc29mdGludCBjb2RlIHNwZW5kIGFn ZXMgZG9pbmcgdGhlIGZpbmFsIGZyZWVzLg0KDQpXZSBoYXZlIGdvb2QgcmVhc29ucyBmb3IgdXNp bmcgcmF3IHNvY2tldHMgdG8gc2VuZCBhIGxvdCBvZiBVRFAuDQpCdXQgJ2hkcmluYycgaGFzIHRv IGJlIHVzZWQgdG8gZ2V0IHRoZSBVRFAgY2hlY2tzdW0gcmlnaHQuDQoNCglEYXZpZA0KDQotDQpS ZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWls dG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMp DQo=