Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
From:   Trond Myklebust <trondmy@hammerspace.com>
To:     "anna@kernel.org" <anna@kernel.org>,
        "chenxiaosong2@huawei.com" <chenxiaosong2@huawei.com>,
        "smayhew@redhat.com" <smayhew@redhat.com>
CC:     "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
        "liuyongqiang13@huawei.com" <liuyongqiang13@huawei.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "yi.zhang@huawei.com" <yi.zhang@huawei.com>,
        "zhangxiaoxu5@huawei.com" <zhangxiaoxu5@huawei.com>
Subject: Re: [PATCH -next 1/2] nfs: nfs{,4}_file_flush should consume
 writeback error
Thread-Topic: [PATCH -next 1/2] nfs: nfs{,4}_file_flush should consume
 writeback error
Thread-Index: AQHYMIz4ntebXgxsJ0GgUhvxvI+AhayxAgAAgAC4igCAAKqugIAAEaIAgDoPigCAAAKeAIAABLWAgAAEBwA=
Date:   Tue, 12 Apr 2022 14:27:23 +0000
Message-ID: <9fc83915a24d7b65d743910dd0f0e5f3d0373596.camel@hammerspace.com>
References: <20220305124636.2002383-1-chenxiaosong2@huawei.com>
         <20220305124636.2002383-2-chenxiaosong2@huawei.com>
         <ca81e90788eabbf6b5df5db7ea407199a6a3aa04.camel@hammerspace.com>
         <5666cb64-c9e4-0549-6ddb-cfc877c9c071@huawei.com>
         <eab4bbb565a50bd09c2dbd3522177237fde2fad9.camel@hammerspace.com>
         <037054f5ac2cd13e59db14b12f4ab430f1ddef5d.camel@hammerspace.com>
         <4a8e21fb-d8bf-5428-67e5-41c47529e641@huawei.com>
         <0528423f710cd612262666b1533763943c717273.camel@hammerspace.com>
         <ccd017a4-31f1-297f-b2e2-e71eb16f1159@huawei.com>
In-Reply-To: <ccd017a4-31f1-297f-b2e2-e71eb16f1159@huawei.com>
Accept-Language: en-US, en-GB
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?VlV4MC9scHNZanVSWVNOamlsYWtjWDFkTzdNcWJFc3ZGQWV0L3FKTk9Na24x?=
 =?utf-8?B?akllc3JPMG1qdVg2Y1hXdXRxcTZVSzlpdmJnV0kzM1BWUFJySzBsbmdIb2xk?=
 =?utf-8?B?elAva2lDTmYrcE1rNWNPVlFnS2YwN1AvSitHTTdMR2xvVlZqQVdHU2hmL3pz?=
 =?utf-8?B?YjN2STJNbzB2VXBEVkwrK0RXdElGUnZpQlZpQUV4Z0ZNdURpUm5OMGxHVTdX?=
 =?utf-8?B?TXFWU3lpc0dwTmt3NUdjQXBiY05nVGcvWTg5Z0JCTHg4UDRUSnhlMVgxb016?=
 =?utf-8?B?QkJ2ZEdYR01KSHNqdzY1UDhkQnkwaFA5WHJnc29qREZuM1kvdmZCNkczMURF?=
 =?utf-8?B?ellXbzR0K2VLUGxRTkdFT0J2YmRoR1NKemhsSEdZdGVwRG11SHVVN1BKY1g4?=
 =?utf-8?B?TWtoSEVKeUhOaGx3UEJLM1ZHdVdVb2NJN0xDUjZvNmNtV3ZhaGdFLzAxcmVK?=
 =?utf-8?B?Q05GWG5RQjgrZjc1TGFDcmJaa2w3N08wMW1sMldZendpVU9KVWxNOWR5NWhE?=
 =?utf-8?B?VHl4dWRXWUFxVWcyU2tEcm02YlNHWER6Vk53NFhZeGlLUnkvUHZnME8zRldO?=
 =?utf-8?B?VkxqMjh0UXVYT1IvUDNSTGdxWFN5YTBFVjkvOHo1ZUNndUpqRmFlNk9LOE9I?=
 =?utf-8?B?bkdIYnZNREJUdlEyak96MXgvSldWVUJwSVJpWU9BeVFNK1RuT255clZkS2lR?=
 =?utf-8?B?L09BQnh4TlluZG8yK3J3Wkdld1VOZHVyUzQ2Uk96WGpUbVkzNTVERFhESzNh?=
 =?utf-8?B?b1VRcDBjSTVweFZJdHk5SkxoUVB6MzBDMWN3dFBnT1NzanVYSmhOd3E2Qit5?=
 =?utf-8?B?UnpCTkNCTEZVRWxOUzI1RlhiSWZGcGZkbzVZMXpaWnB1NXBMaGp0MENSam5w?=
 =?utf-8?B?MHRaTHpNZkNVZzMrcndPVVlHQXBVZnArd0pPMHNVVFliVWpkTEpuRVlWUHBP?=
 =?utf-8?B?OXJpcFRjV3pvTmJ5SHhrcDUxWDc5YjVVVlNDNFVId1BJUDhna0RRWkViUk02?=
 =?utf-8?B?ZzZMOFE3KzJ4U3BDM1hyUjJVTWFUdmwwVjI2NHNIN2Y4cE9Vck5vWlN6NVhl?=
 =?utf-8?B?dSs1di9zd1JRQ0JPdk5QaE41WHYxcmR2L0hqbGdFMEVNSkMvQkRBWWdLRllS?=
 =?utf-8?B?M2ZvQUNLdnhMcGVoQmFONlMrWVd3QWc2T0c0Qm9PTThlRkhQWno0RWV6NWt0?=
 =?utf-8?B?OStvZVhwWGlheGJmVVFOQkZBU2dBL3RvWXRvK05BaEdSbXZxYnpmcTliTVZz?=
 =?utf-8?B?N085NVJVQVJEMXpVcjZCdy85bW5rUGpIMzN4YkdTSXB1Y0xLcFRMM3pRczlF?=
 =?utf-8?B?cFNSRWgrQ0JQOVAzTkJSZmZPSEdvWGRKa2Jac3lYVTBTNGk4RWdUbGtOcW54?=
 =?utf-8?B?eDRkVUEvcFgvd2pzS3kzRVFWVlNhVjYzZ1pJektid1NRYVByc3ZrbGtGNHE3?=
 =?utf-8?B?RTBSeVJCaW9YNkN0dC9ldkVSWXk4dUFjZlhCT3lqSW9OU2N4ejlFOWlyZ2t4?=
 =?utf-8?B?blBpdm9OSnJrVHlUVE1OSGVYQXdGdkdBUHZpeVRYcmxyOWN6YmgzTjBiQ09K?=
 =?utf-8?B?NG5Ob2ovV1NJR3VySWJlRHNzTTBFL2RuUWdaRjV4SVlpcDUveS9vY0hkSHRv?=
 =?utf-8?B?V2JrM3g5aHZQN0FtazVoNnlnMGUxVFpSV1JHb2puZmZOVWc3YThtcUp0THNw?=
 =?utf-8?B?TlhDQ2JRUmNrd2hMVGI5UTc3RkhzaU52bldlWEpKdVJIWEJBY3RsT2tXWFk3?=
 =?utf-8?B?eDBNOVdhZ0VaMG1USFgxMytaVHVSMFVsSDdFS2hQd3BCczhGQmJnTTFIV0JN?=
 =?utf-8?B?cVptZVNPWENvN0pxNU5vbkNKT3VJYjRpaUhoNldINzB1YTg5UXc3T2VCaFpi?=
 =?utf-8?B?TnE1bXVjb2owbk5ZUkY3R3pDeitMRWk0WkV1ZGpFLzYwa216M3pKVnVSejdF?=
 =?utf-8?B?N3BEaUhTc281NjlMMzg4ck9ia1NJZGVqWkRsSGNxQkFYcDBWaTA5QUd6a0dM?=
 =?utf-8?B?cWhJR2t5K1M1aEFPRTQ5WE81VFVXR0RaSGU2bU1SZWlpZjluZDhUdjhXS0ti?=
 =?utf-8?B?ZGFEeUxkTkY4R2pxWXBXbkJ6NGlFaFI3NFFCNC81YithbzBhUEJSelgxZmlD?=
 =?utf-8?B?QzArQmpSenBnZHl5UEg1bzJaR3VFMzhJMXlZdTJxNzQrYjMvVWlCR3VwMEtY?=
 =?utf-8?B?cXlobXJRUHgwOFRGQ0dvUk0zMUF5a3RzT0ZhL2FBaXRDN0tlbHlScnppNzBT?=
 =?utf-8?B?VzhKSHhubnlaOUQrNXJVWXZQMytVZTN0WWgvdkJuZDRUQVdrVnlRT0hBbGRY?=
 =?utf-8?B?VlVKT0hRNzNVcVRTUWNIZ0lrYUhPS0NqZjFsN0FDRXpoaWo4M1NrV3lLRTBT?=
 =?utf-8?Q?15d9KvBL0LgYsY/Q=3D?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <D1D76B45BF5FF845B83F0A5C37CB436C@namprd13.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: hammerspace.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: CH0PR13MB5084.namprd13.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 3635a3c8-a93b-4691-d87f-08da1c908fd8
X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2022 14:27:23.9005
 (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: xtpIaSTx7SMlAofpVcv/b5889CmmAZdj9sZ4ww+kIJHuRo32t7hZ5tdMc4jXjXHokCUaSkMmRDjCrNJsGRg53Q==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR13MB3604
X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,
	DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE
	autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
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