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=-6.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 3DFC7ECE58E for ; Thu, 17 Oct 2019 12:43:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF9C220869 for ; Thu, 17 Oct 2019 12:43:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=hammerspace.com header.i=@hammerspace.com header.b="ZSBT17Rq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387868AbfJQMnw (ORCPT ); Thu, 17 Oct 2019 08:43:52 -0400 Received: from mail-eopbgr800127.outbound.protection.outlook.com ([40.107.80.127]:47910 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731530AbfJQMnw (ORCPT ); Thu, 17 Oct 2019 08:43:52 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=I4ljhxwzgF17KKn4NnQgvHJ862bf9zQctpo+5X8lGBM1+VrXzkEKxkGhtUWXKO7m+PNpYkuVwwbNegw+rMK2GJ25TwaY9mvWcJ64+A/F08SK3tJUoiYkhF3CKCyM12uolXqjz+N9czm4FUps/7mDnWSa4bVgSrjQLwLE0AqKSRPodbSf2dxfFOpciC4x4hFlIZDPENnsSElrspeR6B5M1ZjcJGL1I5ZkaQTgSBs8dSivnusTQNZJaZvknxkCKf5gWPyGPi3GKhI9x6brMzMgsFPpLBaVpdNC+UQpKhQOTE8Sx0Tw1rjA5epQ+j2kkjNRY+wJUpU74szPoatY+CZRRg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=frse0ZhwE3Rwwp+h6AloQE2hnYmPpBI1IvT0ZZfJeNM=; b=AZjwfxcE4OrpnyTNZe4it9piYH3HxhlSsoS61QhF1CE7Gux0WVwAitNPtkkdFBmMWFHjhBGwF7qPqVz0yHOjFmNLPrUIP+/duucvqYEdD+62x33uwgZVbd7m4i0W/UZQYt82ERnfGVxWSPC5MxDbZfseJ+AdFA/x8GVjN96BFnqsSC3N3lcxvfiIDGXNgtQMNTTW7w7erz3Lp+o4rgsCa4b9yDXjn3xNKZwPX/x21n+MzZKL9LUgRKaaxFEdyACnfhgpZNZ76n2o8TuQXuF1Rao02v8rR25T6YIpcBwibE45tu5HHHnzB8ZcqVFKJd/DHkYFP/KMg6dVY6GrTD71rg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=hammerspace.com; dmarc=pass action=none header.from=hammerspace.com; dkim=pass header.d=hammerspace.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hammerspace.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=frse0ZhwE3Rwwp+h6AloQE2hnYmPpBI1IvT0ZZfJeNM=; b=ZSBT17Rqgqwghbv/MO4jc979mfy49a8LOOCkKikL1w881mye3IgtZ80NpxCbsSIAbsNwYeIUsQ2h0LPkgXM6Wm2pGuRz0vB4/puyowIKxdeWGnkJwuoAkuZ1Dl+F82rJHaTDozYd/qRuj8gCO3VxMhz6ymmbZUTMfQdTNZXVEg8= Received: from DM5PR1301MB2108.namprd13.prod.outlook.com (10.174.186.34) by DM5PR1301MB1884.namprd13.prod.outlook.com (10.174.187.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2367.14; Thu, 17 Oct 2019 12:43:47 +0000 Received: from DM5PR1301MB2108.namprd13.prod.outlook.com ([fe80::4c0b:3977:6b2d:6a8c]) by DM5PR1301MB2108.namprd13.prod.outlook.com ([fe80::4c0b:3977:6b2d:6a8c%3]) with mapi id 15.20.2367.016; Thu, 17 Oct 2019 12:43:47 +0000 From: Trond Myklebust To: "linux-nfs@vger.kernel.org" , "neilb@suse.de" CC: "Anna.Schumaker@netapp.com" , "bfields@redhat.com" , "chuck.lever@oracle.com" Subject: Re: [PATCH 1/3] SUNRPC: The TCP back channel mustn't disappear while requests are outstanding Thread-Topic: [PATCH 1/3] SUNRPC: The TCP back channel mustn't disappear while requests are outstanding Thread-Index: AQHVhCyEdkNBkaXjMUiLB8A5l/KGL6dd2LaAgADv94A= Date: Thu, 17 Oct 2019 12:43:47 +0000 Message-ID: <3a20dd4df760111365b381e1cc1fe778ef2dc141.camel@hammerspace.com> References: <20191016141546.32277-1-trond.myklebust@hammerspace.com> <87pniwpbuy.fsf@notabene.neil.brown.name> In-Reply-To: <87pniwpbuy.fsf@notabene.neil.brown.name> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=trondmy@hammerspace.com; x-originating-ip: [66.187.232.65] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 176b0297-40b7-4a3c-2e2b-08d752ffa78c x-ms-traffictypediagnostic: DM5PR1301MB1884: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 01930B2BA8 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(376002)(136003)(39840400004)(396003)(366004)(189003)(199004)(446003)(66946007)(99286004)(66446008)(478600001)(14454004)(8936002)(36756003)(2501003)(91956017)(76116006)(64756008)(66556008)(66476007)(102836004)(71190400001)(66066001)(76176011)(26005)(71200400001)(4326008)(4001150100001)(6506007)(14444005)(110136005)(7736002)(486006)(256004)(6512007)(81156014)(6436002)(81166006)(186003)(229853002)(86362001)(6116002)(3846002)(305945005)(11346002)(2616005)(54906003)(2906002)(5660300002)(6486002)(25786009)(8676002)(118296001)(6246003)(316002)(476003);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR1301MB1884;H:DM5PR1301MB2108.namprd13.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: hammerspace.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: tMYFLXfGxtaWma3PVLAL7/PWvfoTyX1qQnj7VX3NIVcck/9wR0pE2EtCnrtiIZwukELaqRiVzJsDsGE2E5a8ctrUOGRlio5KBZL4y6EDZir/kXSPYh2Kb0BWUS8td8UegeuPETm2yaT5HZl55me2NYcJBw5MsM1ivsAUcYqjsELMf0Zs+LtFcKF9PntOUFQNB3JNWrV2MLO/V9SkTFb+gpa8TYq2m5BrKua9HZ8wYC1Fy53Wv1e1pGC7SJDt5vBv+R1rWBV7RF4bAR/joRnUmLpOPCCLmX4ZAK8OkWpntUAgYpv4TkMH8ERVTu1f//xOJqJ6jrF3+fMJqBxZ465N/5j3fm9WXNQY9KhkP5pV9vhvzuEJlXPVcM2OM2BhbCFl7/ModZW/T+pSiM+mX9uUGy2Y9Lk/X1szlETavRR7wak= x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="utf-8" Content-ID: <0C144DE22CAA7948A23168BBAE442BAD@namprd13.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: hammerspace.com X-MS-Exchange-CrossTenant-Network-Message-Id: 176b0297-40b7-4a3c-2e2b-08d752ffa78c X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Oct 2019 12:43:47.5965 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 0d4fed5c-3a70-46fe-9430-ece41741f59e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Ppy+UDTfDr8ig2GKCb1Duaeg/ZW2FcY8D4zMvCZwoSuTP7wSpEUkV44lttK96EJ4uFIYYJ+puuBKe7hesvJP9A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR1301MB1884 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org T24gVGh1LCAyMDE5LTEwLTE3IGF0IDA5OjI0ICsxMTAwLCBOZWlsQnJvd24gd3JvdGU6DQo+IE9u IFdlZCwgT2N0IDE2IDIwMTksIFRyb25kIE15a2xlYnVzdCB3cm90ZToNCj4gDQo+ID4gSWYgdGhl cmUgYXJlIFRDUCBiYWNrIGNoYW5uZWwgcmVxdWVzdHMgZWl0aGVyIGJlaW5nIHByb2Nlc3NlZCBi eQ0KPiA+IHRoZQ0KPiA+IHNlcnZlciB0aHJlYWRzLCB0aGVuIHdlIHNob3VsZCBob2xkIGEgcmVm ZXJlbmNlIHRvIHRoZSB0cmFuc3BvcnQNCj4gPiB0byBlbnN1cmUgaXQgZG9lc24ndCBnZXQgZnJl ZWQgZnJvbSB1bmRlcm5lYXRoIHVzLg0KPiA+IA0KPiA+IFJlcG9ydGVkLWJ5OiBOZWlsIEJyb3du IDxuZWlsYkBzdXNlLmRlPg0KPiA+IEZpeGVzOiAyZWEyNDQ5N2ExYjMgKCJTVU5SUEM6IFJQQyBj YWxsYmFja3MgbWF5IGJlIHNwbGl0IGFjcm9zcw0KPiA+IHNldmVyYWwuLiIpDQo+ID4gU2lnbmVk LW9mZi1ieTogVHJvbmQgTXlrbGVidXN0IDx0cm9uZC5teWtsZWJ1c3RAaGFtbWVyc3BhY2UuY29t Pg0KPiA+IC0tLQ0KPiA+ICBuZXQvc3VucnBjL2JhY2tjaGFubmVsX3Jxc3QuYyB8IDUgKysrLS0N Cj4gPiAgMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkNCj4g PiANCj4gPiBkaWZmIC0tZ2l0IGEvbmV0L3N1bnJwYy9iYWNrY2hhbm5lbF9ycXN0LmMNCj4gPiBi L25ldC9zdW5ycGMvYmFja2NoYW5uZWxfcnFzdC5jDQo+ID4gaW5kZXggMzM5ZThjMDc3YzJkLi43 ZWIyNTEzNzJmOTQgMTAwNjQ0DQo+ID4gLS0tIGEvbmV0L3N1bnJwYy9iYWNrY2hhbm5lbF9ycXN0 LmMNCj4gPiArKysgYi9uZXQvc3VucnBjL2JhY2tjaGFubmVsX3Jxc3QuYw0KPiA+IEBAIC0zMDcs OCArMzA3LDggQEAgdm9pZCB4cHJ0X2ZyZWVfYmNfcnFzdChzdHJ1Y3QgcnBjX3Jxc3QgKnJlcSkN Cj4gPiAgCQkgKi8NCj4gPiAgCQlkcHJpbnRrKCJSUEM6ICAgICAgIExhc3Qgc2Vzc2lvbiByZW1v dmVkIHJlcT0lcFxuIiwNCj4gPiByZXEpOw0KPiA+ICAJCXhwcnRfZnJlZV9hbGxvY2F0aW9uKHJl cSk7DQo+ID4gLQkJcmV0dXJuOw0KPiA+ICAJfQ0KPiA+ICsJeHBydF9wdXQoeHBydCk7DQo+ID4g IH0NCj4gPiAgDQo+ID4gIC8qDQo+ID4gQEAgLTMzOSw3ICszMzksNyBAQCBzdHJ1Y3QgcnBjX3Jx c3QgKnhwcnRfbG9va3VwX2JjX3JlcXVlc3Qoc3RydWN0DQo+ID4gcnBjX3hwcnQgKnhwcnQsIF9f YmUzMiB4aWQpDQo+ID4gIAkJc3Bpbl91bmxvY2soJnhwcnQtPmJjX3BhX2xvY2spOw0KPiA+ICAJ CWlmIChuZXcpIHsNCj4gPiAgCQkJaWYgKHJlcSAhPSBuZXcpDQo+ID4gLQkJCQl4cHJ0X2ZyZWVf YmNfcnFzdChuZXcpOw0KPiA+ICsJCQkJeHBydF9mcmVlX2FsbG9jYXRpb24obmV3KTsNCj4gPiAg CQkJYnJlYWs7DQo+ID4gIAkJfSBlbHNlIGlmIChyZXEpDQo+ID4gIAkJCWJyZWFrOw0KPiA+IEBA IC0zNjgsNiArMzY4LDcgQEAgdm9pZCB4cHJ0X2NvbXBsZXRlX2JjX3JlcXVlc3Qoc3RydWN0IHJw Y19ycXN0DQo+ID4gKnJlcSwgdWludDMyX3QgY29waWVkKQ0KPiA+ICAJc2V0X2JpdChSUENfQkNf UEFfSU5fVVNFLCAmcmVxLT5ycV9iY19wYV9zdGF0ZSk7DQo+ID4gIA0KPiA+ICAJZHByaW50aygi UlBDOiAgICAgICBhZGQgY2FsbGJhY2sgcmVxdWVzdCB0byBsaXN0XG4iKTsNCj4gPiArCXhwcnRf Z2V0KHhwcnQpOw0KPiA+ICAJc3Bpbl9sb2NrKCZiY19zZXJ2LT5zdl9jYl9sb2NrKTsNCj4gPiAg CWxpc3RfYWRkKCZyZXEtPnJxX2JjX2xpc3QsICZiY19zZXJ2LT5zdl9jYl9saXN0KTsNCj4gPiAg CXdha2VfdXAoJmJjX3NlcnYtPnN2X2NiX3dhaXRxKTsNCj4gPiAtLSANCj4gPiAyLjIxLjANCj4g DQo+IExvb2tzIGdvb2QuDQo+IFRoaXMgYW5kIHRoZSBuZXh0IHR3bzoNCj4gIFJldmlld2VkLWJ5 OiBOZWlsQnJvd24gPG5laWxiQHN1c2UuZGU+DQo+IA0KPiBJdCB3b3VsZCBoZWxwIG1lIGlmIHlv dSBjb3VsZCBhZGQgYSBGaXhlczogdGFnIHRvIGF0IGxlYXN0IHRoZSBmaXJzdA0KPiB0d28uDQoN Ck5laXRoZXIgaGF2ZSBDYzpzdGFibGUsIGJ1dCB0aGV5IGJvdGggYWxyZWFkeSBoYXZlIEZpeGVz OiB0YWdzLiBTZWUNCmFib3ZlLg0KDQo+IA0KPiBCVFcsIHdoaWxlIHJldmlld2luZyBJIG5vdGlj ZXMgdGhhdCBiY19hbGxvY19jb3VudCBhbmQgYmNfc2xvdF9jb3VudA0KPiBhcmUNCj4gYWxtb3N0 IGlkZW50aWNhbC4gIFRoZSB0aHJlZSBwbGFjZXMgd2VyZSB0aGF0IGFyZSBjaGFuZ2VkIHNlcGFy YXRlbHkNCj4gYXJlDQo+IHByb2JhYmx5IChtaW5vcikgYnVncy4NCj4gRG8geW91IHJlY2FsbCB3 aHkgdGhlcmUgd2VyZSB0d28gZGlmZmVyZW50IGNvdW50ZXJzPyAgSGFzIHRoZSByZWFzb24NCj4g ZGlzYXBwZWFyZWQ/DQoNCklJUkMsIHRoZSBmb3JtZXIgY29udGFpbnMgdGhlIGNvdW50IG9mIHBy ZWFsbG9jYXRlZCBzbG90cywgYW5kIHRoZQ0KbGF0dGVyIHRoZSBjb3VudCBvZiBwcmVhbGxvY2F0 ZWQrZHluYW1pYyBzbG90cy4NCg0KVGhhbmtzDQogIFRyb25kDQotLSANClRyb25kIE15a2xlYnVz dA0KTGludXggTkZTIGNsaWVudCBtYWludGFpbmVyLCBIYW1tZXJzcGFjZQ0KdHJvbmQubXlrbGVi dXN0QGhhbW1lcnNwYWNlLmNvbQ0KDQoNCg==