From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Trond Myklebust To: bcodding redhat , "anna.schumaker@netapp.com" CC: "linux-nfs@vger.kernel.org" Subject: Re: [PATCH 3/3] NFSv4.1: Detect and retry after OPEN and CLOSE/DOWNGRADE race Date: Tue, 17 Oct 2017 15:49:24 +0000 Message-ID: <1508255361.3718.17.camel@primarydata.com> References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 List-ID: T24gVHVlLCAyMDE3LTEwLTE3IGF0IDEwOjQ2IC0wNDAwLCBCZW5qYW1pbiBDb2RkaW5ndG9uIHdy b3RlOg0KPiBJZiB0aGUgY2xpZW50IGlzc3VlcyB0d28gc2ltdWx0YW5lb3VzIE9QRU4gY2FsbHMs IGFuZCB0aGUgcmVzcG9uc2UgdG8NCj4gdGhlDQo+IGZpcnN0IE9QRU4gY2FsbCAoc2VxdWVuY2Ug aWQgMSkgaXMgZGVsYXllZCBiZWZvcmUgdXBkYXRpbmcgdGhlDQo+IG5mczRfc3RhdGUsDQo+IHRo ZW4gdGhlIGNsaWVudCdzIG5mczRfc3RhdGUgY2FuIHRyYW5zaXRpb24gdGhyb3VnaCBhIGNvbXBs ZXRlDQo+IGxpZmVjeWNsZSBvZg0KPiBPUEVOIChzdGF0ZSBzZXF1ZW5jZSBpZCAyKSwgYW5kIENM T1NFIChzdGF0ZSBzZXF1ZW5jZSBpZCAzKS4gIFdoZW4NCj4gdGhlDQo+IGZpcnN0IE9QRU4gaXMg ZmluYWxseSBwcm9jZXNzZWQsIHRoZSBuZnM0X3N0YXRlIGlzIGluY29ycmVjdGx5DQo+IHRyYW5z aXRpb25lZA0KPiBiYWNrIHRvIE5GU19PUEVOX1NUQVRFIGZvciB0aGUgZmlyc3QgT1BFTiAoc2Vx dWVuY2UgaWQNCj4gMSkuICBTdWJzZXF1ZW50IGNhbGxzDQo+IHRvIExPQ0sgb3IgQ0xPU0Ugd2ls bCByZWNlaXZlIE5GUzRFUlJfQkFEX1NUQVRFSUQsIGFuZCB0cmlnZ2VyIHN0YXRlDQo+IHJlY292 ZXJ5Lg0KPiANCj4gRml4IHRoaXMgYnkgcGFzc2luZyBiYWNrIHRoZSByZXN1bHQgb2YgbmVlZF91 cGRhdGVfb3Blbl9zdGF0ZWlkKCkgdG8NCj4gdGhlDQo+IG9wZW4oKSBwYXRoLCB3aXRoIHRoZSBy ZXN1bHQgdG8gdHJ5IGFnYWluIGlmIHRoZSBPUEVOJ3Mgc3RhdGVpZA0KPiBzaG91bGQgbm90DQo+ IGJlIHVwZGF0ZWQuDQo+IA0KDQpXaHkgYXJlIHdlIHdvcnJpZWQgYWJvdXQgdGhlIHNwZWNpYWwg Y2FzZSB3aGVyZSB0aGUgY2xpZW50IGFjdHVhbGx5DQpmaW5kcyB0aGUgY2xvc2VkIHN0YXRlaWQg aW4gaXRzIGNhY2hlPw0KDQpJbiB0aGUgbW9yZSBnZW5lcmFsIGNhc2Ugb2YgeW91ciByYWNlLCB0 aGUgc3RhdGVpZCBtaWdodCBub3QgYmUgZm91bmQNCmF0IGFsbCBiZWNhdXNlIHRoZSBDTE9TRSBj b21wbGV0ZXMgYW5kIGlzIHByb2Nlc3NlZCBvbiB0aGUgY2xpZW50DQpiZWZvcmUgaXQgY2FuIHBy b2Nlc3MgdGhlIHJlcGx5IGZyb20gdGhlIGRlbGF5ZWQgT1BFTi4gSWYgc28sIHdlIHJlYWxseQ0K aGF2ZSBubyB3YXkgdG8gZGV0ZWN0IHRoYXQgdGhlIGZpbGUgaGFzIGFjdHVhbGx5IGJlZW4gY2xv c2VkIGJ5IHRoZQ0Kc2VydmVyIHVudGlsIHdlIHNlZSB0aGUgTkZTNEVSUl9CQURfU1RBVEVJRC4N Cg0KTm90ZSBhbHNvIHRoYXQgc2VjdGlvbiAxOC4yLjQgc2F5cyB0aGF0ICJ0aGUgc2VydmVyIFNI T1VMRCByZXR1cm4gdGhlDQppbnZhbGlkIHNwZWNpYWwgc3RhdGVpZCAodGhlICJvdGhlciIgdmFs dWUgaXMgemVybyBhbmQgdGhlICJzZXFpZCINCmZpZWxkIGlzIE5GUzRfVUlOVDMyX01BWCwgc2Vl IFNlY3Rpb24gOC4yLjMpIiB3aGljaCBmdXJ0aGVyIGVuc3VyZXMNCnRoYXQgd2Ugc2hvdWxkIG5v dCBiZSBhYmxlIHRvIG1hdGNoIHRoZSBPUEVOIHN0YXRlaWQgb25jZSB0aGUgQ0xPU0UgaXMNCnBy b2Nlc3NlZCBvbiB0aGUgY2xpZW50Lg0KDQotLSANClRyb25kIE15a2xlYnVzdA0KTGludXggTkZT IGNsaWVudCBtYWludGFpbmVyLCBQcmltYXJ5RGF0YQ0KdHJvbmQubXlrbGVidXN0QHByaW1hcnlk YXRhLmNvbQ0K