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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C779C67871 for ; Tue, 25 Oct 2022 01:06:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5F38D80008; Mon, 24 Oct 2022 21:06:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5A38680007; Mon, 24 Oct 2022 21:06:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4445580008; Mon, 24 Oct 2022 21:06:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 3824880007 for ; Mon, 24 Oct 2022 21:06:58 -0400 (EDT) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 0944580524 for ; Tue, 25 Oct 2022 01:06:58 +0000 (UTC) X-FDA: 80057682516.21.159B796 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2043.outbound.protection.outlook.com [40.107.223.43]) by imf17.hostedemail.com (Postfix) with ESMTP id 8178F4001C for ; Tue, 25 Oct 2022 01:06:56 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=oIeNtvrYHygoG7D03tu/XAe4Tt/qls1EHkzuS35tloH8BhoXL2J4b9s/6YzuGBVYjiB6BR9WDCCZ85uF4lSvcijl/ecdYAWQNQtRjLd5Qf3aPHHNMPJxggqrpHpMrFWX8E5htBHNzOaKm1aQw6tX15aedTmpzS4wQrk0day9hKdEAxzhjcamVe18JO7BkDO6WMFWO2aUuLYJEK43q3ZyvT7bjXI7x5nG+6xtMtXdMrpROKw2467k5qBP5AaUlfn/tePkK0xLj69YH7S1vNR2wC4ir1qnjXk75XKuM2E2LaPs9V21NaRD8vssY4rUP+G1itWXpiZu8GMLmqMglO774A== 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-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=IZa79dephRHEJYjYTFtMQpnvTcmhwqiQhNVYKG1WjNA=; b=j8pcb58f+8zp005YRZlrFtX0FT3L0zKlsfvRtw0mmLPIEx8XMetHVsUKRJhP9JwQvpcRGZqHP9EWhk3zeUOF6uMGEPav54IE4wnm4lzo1JwG+FJBVXqTfiWfEXMRnvweX8manXt6wUP/CiIj3J2ZlhckHYvWViF25WKRbnmzH4DCwrYBC+nthPlV/z1hnlkTT0IYwkGyhF15lxWf97ZpZr4rhJ2aLAqPnqt9Of3FliZvFSptNzUY67RGypY1ln3SpFJudHKwD4CBmP7wNqs55BOnHfSU7+kWFofDmnsyws+HvF1IWtk5psUeWqXcsJ+vQ22MYac0Cr70dN8GrAnCgQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IZa79dephRHEJYjYTFtMQpnvTcmhwqiQhNVYKG1WjNA=; b=RSTO1RxAr+d9juO1cxwbEtkzQi2zzlu53dj4DI5rl9k0gtYIS0ZmV/vSpbBeCHxWZtGgDUAv/756cX7JUuEc/pqMOdRkzEY7QREn3mNgMC0PBtJzQTDK2BEFiFwj1DhdKtyejXdyGz5DziDDum4An9YAEYP1qMmtBfDr4XU3Wk49NFXqDfd027bPJj4hWlgqkSNB1lUZxVLyrbmyd+VfYeKejDfUFE2kKPg1yBMDLOuAWcdGwb78R871lvUmm7SnsMsLRFikiSU2v4McxEaUSHrKfGC0c94xEbOuwEBkP9Lvrfq0IvFKv4WDW70s1uXtLinUNBuU68NK/FUieLhNNA== Received: from MW2PR12MB4667.namprd12.prod.outlook.com (2603:10b6:302:12::28) by BL1PR12MB5947.namprd12.prod.outlook.com (2603:10b6:208:39a::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5723.32; Tue, 25 Oct 2022 01:06:50 +0000 Received: from MW2PR12MB4667.namprd12.prod.outlook.com ([fe80::1402:a17a:71c1:25a3]) by MW2PR12MB4667.namprd12.prod.outlook.com ([fe80::1402:a17a:71c1:25a3%7]) with mapi id 15.20.5746.021; Tue, 25 Oct 2022 01:06:50 +0000 From: Chaitanya Kulkarni To: Logan Gunthorpe , "linux-kernel@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "linux-block@vger.kernel.org" , "linux-pci@vger.kernel.org" , "linux-mm@kvack.org" CC: Christoph Hellwig , Greg Kroah-Hartman , Dan Williams , Jason Gunthorpe , =?utf-8?B?Q2hyaXN0aWFuIEvDtm5pZw==?= , John Hubbard , Don Dutile , Matthew Wilcox , Daniel Vetter , Minturn Dave B , Jason Ekstrand , Dave Hansen , Xiong Jianxin , Bjorn Helgaas , Ira Weiny , Robin Murphy , Martin Oliveira , Chaitanya Kulkarni , Ralph Campbell , Stephen Bates Subject: Re: [PATCH v11 1/9] mm: allow multiple error returns in try_grab_page() Thread-Topic: [PATCH v11 1/9] mm: allow multiple error returns in try_grab_page() Thread-Index: AQHY5XRhl0xU4gKBX0OUrinPZx6EA64eUTWA Date: Tue, 25 Oct 2022 01:06:50 +0000 Message-ID: <32dc3dd6-5d44-e1b0-b716-4ea52187fb4f@nvidia.com> References: <20221021174116.7200-1-logang@deltatee.com> <20221021174116.7200-2-logang@deltatee.com> In-Reply-To: <20221021174116.7200-2-logang@deltatee.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 x-ms-publictraffictype: Email x-ms-traffictypediagnostic: MW2PR12MB4667:EE_|BL1PR12MB5947:EE_ x-ms-office365-filtering-correlation-id: 50ef498e-43a5-47c4-dc52-08dab6253288 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MW2PR12MB4667.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(136003)(376002)(346002)(39860400002)(366004)(396003)(451199015)(41300700001)(7416002)(91956017)(31696002)(66556008)(8676002)(6506007)(66476007)(66446008)(36756003)(86362001)(38100700002)(5660300002)(76116006)(66946007)(2906002)(4326008)(6486002)(83380400001)(8936002)(64756008)(6512007)(38070700005)(122000001)(186003)(2616005)(54906003)(71200400001)(316002)(478600001)(110136005)(53546011)(4744005)(31686004)(43740500002)(45980500001);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?utf-8?B?U1luZnllbVpyWGM1MWxRMWRWVzZ2SE5jUWU4ZTZ6THo3eHJzMFhsbUt5WnFG?= =?utf-8?B?RFZiejhKTFg2SlB6WFZ5bUs2Sk1TV2paczBhQldOdGN6N0ZlajhFM2REVEdj?= =?utf-8?B?RnR2UFFzdXpadEFrUmIzMVNtT0tOdlNLcGlaS0R0bTNsRW1yM0YvVmlPKzdS?= =?utf-8?B?M3hzcXFGUHRZQk1WalVZb3NSV1M0UDlDN3BqdGU5cGZCM2dlMnpieXVkM2JX?= =?utf-8?B?ZW4yQUt1bFN6K0UwTlp0T3p2VnJwOHFHdFhZMHUrYTM5Uzc3MUFCcXNXUnZk?= =?utf-8?B?TWVsZkowRmRpVmx5Y3VkZkd0RWhueFNiQ3F5VEJXYXFWQ0VyMFZFdXNYMEZt?= =?utf-8?B?SGZCcWZ3RWlMckV0YlpiSEM2RHBqdVpCb01vY2JieUlFTTB2QXZtU3RWYjFJ?= =?utf-8?B?NnBJOWM3YlRjakIzdGZQRmNFWElUdVJoSldScXZ5ekVQdmw5VDQ4biswQ2sr?= =?utf-8?B?NWNDaXBqdW9KYjg2OTc4TmtNdUs2cjc2dkM5TmR6Tlo2Tzd5THpiOEwwV2VX?= =?utf-8?B?cWtkWDBlVEFPSUdxTTFzNFVRWm5YSVJnbW1jNjZvSWNaMlF1UTg3aXlBYlVZ?= =?utf-8?B?NVF4STBGOXRFWEtRTjg1TG1tZjFXZUpLbmk5WGJ5a2wraFlUdnlFUkdPdTcr?= =?utf-8?B?Zlo4bjgwTGZxK2dIV3lwQXpRYXVJdklxc3NEL0N0NXNaaUhDeEtzQW93WGNJ?= =?utf-8?B?TE9jYkV3YVV6WDVPOVFMTkNOUFZoMFR5enI2RjA2ZjJCY2FsY1hnRUtPU3dz?= =?utf-8?B?aGJTOWIzTEM4T2lSaUFkS1pZUmZLMkllNDRHZTluMTJUOXpabEpNSjBIZ1Z1?= =?utf-8?B?Ry9rSDZKZmI3NWNmM1dML0NUak1LVGRlM2ZPckxoWUpxdDFGRGxualVWZm1Q?= =?utf-8?B?b1kyckNqUG1sdkNHNDZzRTJ2bk9JWXI2R25rTWlYQS9JMUZVZVFSWUVJNlJE?= =?utf-8?B?RzdleTJhN2l4QnBpV2l5OEwyK2pBdm01L28vZ3NkZ2RnbC9MUjVYUG5yOXV0?= =?utf-8?B?eFU0LzBXWGdnLzlkYWcrQk52M1RvT1pOUTJWRGhwNjFVdlpKbjZGYVo1eHI1?= =?utf-8?B?M01kV240T3VSMElrejZYdjJPYVAza3hrY3pVOHpJWWpDYkxNT2pDTnJjZkdv?= =?utf-8?B?ZCtkZFdyNGxHV2FSTWdjVkxITTdIVTRVZjI0bU9Obmw1M0FCTFkyYjhibEhy?= =?utf-8?B?RHhTQ3podXovSURnTFRWT09LcFRzV3hKSnJURDhyZHhmbTZhS0FWR3ZsVWdC?= =?utf-8?B?d3RBYUV2c0JqQTlndlcrU1hZNWk3VmZFb1MzU1BmbW9LUnd0Z3lqNXd3SUhS?= =?utf-8?B?cEdqQndlUnFkQmZlMDBkMnJjR0RNV3RmdDBFZ1Q0aTlNbEZQR3pDNEYwMDky?= =?utf-8?B?eFJqQ1p6bTdYZ21Qb3ZOS3diR1lVdSthREVjWlpnaE5DYWFpbmk1WjBmUmdH?= =?utf-8?B?K0NKWDI0QURWY1U2RnQxbnhhTk0rekVPYStEeThJcDNhRGx0dkNTZGlJOWFa?= =?utf-8?B?eTB0R3Rkdm02azM5SWp0OW8yR2lvMGdOay9iN3lWVXQ5TnRyOVZLTS9YZm1X?= =?utf-8?B?R2xQODh6TXllSmZWc01TSllkV1g3QnRKQXFIcHJVQkVFWjlRVnFleHhVa2Q1?= =?utf-8?B?NnJHc1pJUlFIZTcrZTBUR2hjYzVzU0lTSlJhdHM4V2NCYzBmNnF5MlhYbzJv?= =?utf-8?B?dVZIM2MxRWlpZmlOaWFWTTdwazJWc1o2V1BpMmNTTDN4NWYwUk51ZXFPZlZy?= =?utf-8?B?VDI3LzVqSzY1aXFMcjkyY1lmZ21yZ3lZRkNucVo3b2tsNmpDdHlUcHMyd1A4?= =?utf-8?B?d1dVZ1dMTkw4RDkzSTVibjFldkh6Q0VXMDNqbTZDQy9qR3RSNlpYN25BRFpK?= =?utf-8?B?Rk1TWEttZEVVd1pFbVMwa2xON3M1VCtjcUh5eXVEWVJ4VmE4YnZkT3BoVURW?= =?utf-8?B?Y0dqNFRNcDBvSEVpTE51NWczZUJoMmVtUTZkZTVmenZveDFvc0RzWTVYN3Ex?= =?utf-8?B?cFVxK2ozSEFkQUk5NkNBNDB4T0lIZWMybmdWK01LUWpJYzN0N1llVnRBc0Nw?= =?utf-8?B?WWhsRTJ1T2szZmlsWUxqTVk4bjl4OGhBVHZhM3h0UVNKMmdhdUVYR3g5QUho?= =?utf-8?B?dVBVN0JYdGpYZGYyL3ZDTkY2eitmckROcWRrbFUyTW40ajhsYlRZL1ZYaE1W?= =?utf-8?B?YUE9PQ==?= Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MW2PR12MB4667.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 50ef498e-43a5-47c4-dc52-08dab6253288 X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Oct 2022 01:06:50.3909 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: bvmjnLIcLRGSVdbJ4ohlr/+tLelTBcDQotYKopmCoCWlNyqEArtq4FZICIUpwcrKd8eBM0zwoWEmHWfzA5+FBA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5947 ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1666660016; a=rsa-sha256; cv=pass; b=jiu675CGNRCTm9A5LS9egB0JZAnerEp449x80SwmIcjBltfHwOKVS4UM6Zofp4OygwvSrb iLJoLrbowY3ikXxl+SLWL8HpZO4vq+IS0AtGHmca7WNBVX/fanWMD8ZyywHWi7APnIkvpq pimu1p1vqPf+z1VcvdnUV/pAjq8jPiA= ARC-Authentication-Results: i=2; imf17.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=RSTO1RxA; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf17.hostedemail.com: domain of chaitanyak@nvidia.com designates 40.107.223.43 as permitted sender) smtp.mailfrom=chaitanyak@nvidia.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1666660016; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=IZa79dephRHEJYjYTFtMQpnvTcmhwqiQhNVYKG1WjNA=; b=mavE8pZhhEjgfJ7NqF/SIwaPz5zlEnJVHdP2wsDBs6C01oNRDTnH0yQty4rKWA6TLIpOvc vAemqZAGlCAAiJGgCQF5z/ekTIbp6LMfFx6nRatKk6nl1d5jyqnbJIJvcJYnr64/z/qA8d nwtTsawuHI184HVWyzJiRIwSq6ChaWI= X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 8178F4001C X-Rspam-User: Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=RSTO1RxA; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf17.hostedemail.com: domain of chaitanyak@nvidia.com designates 40.107.223.43 as permitted sender) smtp.mailfrom=chaitanyak@nvidia.com X-Stat-Signature: rasmuhg7qfrgz9z9r7jqjmoujiy1abrr X-HE-Tag: 1666660016-533261 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: T24gMTAvMjEvMjIgMTA6NDEsIExvZ2FuIEd1bnRob3JwZSB3cm90ZToNCj4gSW4gb3JkZXIgdG8g YWRkIGNoZWNrcyBmb3IgUDJQRE1BIG1lbW9yeSBpbnRvIHRyeV9ncmFiX3BhZ2UoKSwgZXhwYW5k DQo+IHRoZSBlcnJvciByZXR1cm4gZnJvbSBhIGJvb2wgdG8gYW4gaW50L2Vycm9yIGNvZGUuIFVw ZGF0ZSBhbGwgdGhlDQo+IGNhbGxzaXRlcyBoYW5kbGUgY2hhbmdlIGluIHVzYWdlLg0KPiANCj4g QWxzbyByZW1vdmUgdGhlIFdBUk5fT05fT05DRSgpIGNhbGwgYXQgdGhlIGNhbGxzaXRlcyBzZWVp bmcgdGhlcmUNCj4gYWxyZWFkeSBpcyBhIFdBUk5fT05fT05DRSgpIGluc2lkZSB0aGUgZnVuY3Rp b24gaWYgaXQgZmFpbHMuDQo+IA0KPiBTaWduZWQtb2ZmLWJ5OiBMb2dhbiBHdW50aG9ycGUgPGxv Z2FuZ0BkZWx0YXRlZS5jb20+DQoNClJldmlld2VkLWJ5OiBDaGFpdGFueWEgS3Vsa2FybmkgPGtj aEBudmlkaWEuY29tPg0KDQotY2sNCg0K