From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: [iscsi] Deadlock occurred when network is in error Date: Mon, 14 Aug 2017 15:17:17 +0000 Message-ID: <1502723836.2333.3.camel@wdc.com> References: <22E823DBB7698E489DC113638F7470729C17B6@DGGEMM506-MBX.china.huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <22E823DBB7698E489DC113638F7470729C17B6@DGGEMM506-MBX.china.huawei.com> Content-Language: en-US Content-ID: <7B4C87BEF48B0F4D9744F418D2B422E9@namprd04.prod.outlook.com> Sender: linux-kernel-owner@vger.kernel.org To: "lduncan@suse.com" , "tang.chen@huawei.com" , "cleech@redhat.com" , "axboe@kernel.dk" Cc: "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "guijianfeng@huawei.com" , "zhengchuan@huawei.com" List-Id: linux-scsi@vger.kernel.org T24gTW9uLCAyMDE3LTA4LTE0IGF0IDExOjIzICswMDAwLCBUYW5nY2hlbiAoVVZQKSB3cm90ZToN Cj4gUHJvYmxlbSAyOg0KPiANCj4gKioqKioqKioqKioqKioqDQo+IFtXaGF0IGl0IGxvb2tzIGxp a2VdDQo+ICoqKioqKioqKioqKioqKg0KPiBXaGVuIHJlbW92ZSBhIHNjc2kgZGV2aWNlLCBhbmQg dGhlIG5ldHdvcmsgZXJyb3IgaGFwcGVucywgX19ibGtfZHJhaW5fcXVldWUoKSBjb3VsZCBoYW5n IGZvcmV2ZXIuDQo+IA0KPiAjIGNhdCAvcHJvYy8xOTE2MC9zdGFjayANCj4gWzxmZmZmZmZmZjgw MDU4ODZkPl0gbXNsZWVwKzB4MWQvMHgzMA0KPiBbPGZmZmZmZmZmODAyMDFhODQ+XSBfX2Jsa19k cmFpbl9xdWV1ZSsweGU0LzB4MTYwDQo+IFs8ZmZmZmZmZmY4MDIwMjc2Nj5dIGJsa19jbGVhbnVw X3F1ZXVlKzB4MTA2LzB4MmUwDQo+IFs8ZmZmZmZmZmZhMDAwZmIwMj5dIF9fc2NzaV9yZW1vdmVf ZGV2aWNlKzB4NTIvMHhjMCBbc2NzaV9tb2RdDQo+IFs8ZmZmZmZmZmZhMDAwZmI5Yj5dIHNjc2lf cmVtb3ZlX2RldmljZSsweDJiLzB4NDAgW3Njc2lfbW9kXQ0KPiBbPGZmZmZmZmZmYTAwMGZiYzA+ XSBzZGV2X3N0b3JlX2RlbGV0ZV9jYWxsYmFjaysweDEwLzB4MjAgW3Njc2lfbW9kXQ0KPiBbPGZm ZmZmZmZmODAxYTRlNzU+XSBzeXNmc19zY2hlZHVsZV9jYWxsYmFja193b3JrKzB4MTUvMHg4MA0K PiBbPGZmZmZmZmZmODAwNjJkNjk+XSBwcm9jZXNzX29uZV93b3JrKzB4MTY5LzB4MzQwDQo+IFs8 ZmZmZmZmZmY4MDA2NjdlMz5dIHdvcmtlcl90aHJlYWQrMHgxODMvMHg0OTANCj4gWzxmZmZmZmZm ZjgwMDZhNTI2Pl0ga3RocmVhZCsweDk2LzB4YTANCj4gWzxmZmZmZmZmZjgwNDFlYmI0Pl0ga2Vy bmVsX3RocmVhZF9oZWxwZXIrMHg0LzB4MTANCj4gWzxmZmZmZmZmZmZmZmZmZmZmPl0gMHhmZmZm ZmZmZmZmZmZmZmZmDQo+IA0KPiBUaGUgcmVxdWVzdCBxdWV1ZSBvZiB0aGlzIGRldmljZSB3YXMg c3RvcHBlZC4gU28gdGhlIGZvbGxvd2luZyBjaGVjayB3aWxsIGJlIHRydWUgZm9yZXZlcjoNCj4g X19ibGtfcnVuX3F1ZXVlKCkNCj4gew0KPiAgICAgICAgIGlmICh1bmxpa2VseShibGtfcXVldWVf c3RvcHBlZChxKSkpDQo+ICAgICAgICAgICAgICAgICByZXR1cm47DQo+IA0KPiAgICAgICAgIF9f YmxrX3J1bl9xdWV1ZV91bmNvbmQocSk7DQo+IH0NCj4gDQo+IFNvIF9fYmxrX3J1bl9xdWV1ZV91 bmNvbmQoKSB3aWxsIG5ldmVyIGJlIGNhbGxlZCwgYW5kIHRoZSBwcm9jZXNzIGhhbmcuDQo+IA0K PiBbIC4uLiBdDQo+DQo+ICoqKioqKioqKioqKioqKioNCj4gW0hvdyB0byByZXByb2R1Y2VdDQo+ ICoqKioqKioqKioqKioqKioNCj4gVW5mb3J0dW5hdGVseSBJIGNhbm5vdCByZXByb2R1Y2UgaXQg aW4gdGhlIGxhdGVzdCBrZXJuZWwuIA0KPiBUaGUgc2NyaXB0IGJlbG93IHdpbGwgaGVscCB0byBy ZXByb2R1Y2UsIGJ1dCBub3QgdmVyeSBvZnRlbi4NCj4gDQo+ICMgY3JlYXRlIG5ldHdvcmsgZXJy b3INCj4gdGMgcWRpc2MgYWRkIGRldiBldGgxIHJvb3QgbmV0ZW0gbG9zcyA2MCUNCj4gDQo+ICMg cmVzdGFydCBpc2NzaWQgYW5kIHJlc2NhbiBzY3NpIGJ1cyBhZ2FpbiBhbmQgYWdhaW4NCj4gd2hp bGUgWyAxIF0NCj4gZG8NCj4gc3lzdGVtY3RsIHJlc3RhcnQgaXNjc2lkDQo+IHJlc2Nhbi1zY3Np LWJ1cyAgICAgICAgKGh0dHA6Ly9tYW5wYWdlcy51YnVudHUuY29tL21hbnBhZ2VzL3RydXN0eS9t YW44L3Jlc2Nhbi1zY3NpLWJ1cy44Lmh0bWwpDQo+IGRvbmUNCg0KVGhpcyBzaG91bGQgaGF2ZSBi ZWVuIGZpeGVkIGJ5IGNvbW1pdCAzNmUzY2YyNzM5NzcgKCJzY3NpOiBBdm9pZCB0aGF0IFNDU0kN CnF1ZXVlcyBnZXQgc3R1Y2siKS4gVGhlIGZpcnN0IG1haW5saW5lIGtlcm5lbCB0aGF0IGluY2x1 ZGVzIHRoaXMgY29tbWl0IGlzDQprZXJuZWwgdjQuMTEuDQoNCj4gdm9pZCBfX2Jsa19ydW5fcXVl dWUoc3RydWN0IHJlcXVlc3RfcXVldWUgKnEpDQo+IHsNCj4gLSAgICAgICBpZiAodW5saWtlbHko YmxrX3F1ZXVlX3N0b3BwZWQocSkpKQ0KPiArICAgICAgIGlmICh1bmxpa2VseShibGtfcXVldWVf c3RvcHBlZChxKSkgJiYgdW5saWtlbHkoIWJsa19xdWV1ZV9keWluZyhxKSkpDQo+ICAgICAgICAg ICAgICAgICByZXR1cm47DQo+IA0KPiAgICAgICAgIF9fYmxrX3J1bl9xdWV1ZV91bmNvbmQocSk7 DQoNCkFyZSB5b3UgYXdhcmUgdGhhdCB0aGUgc2luZ2xlIHF1ZXVlIGJsb2NrIGxheWVyIGlzIG9u IGl0cyB3YXkgb3V0IGFuZCB3aWxsDQpiZSByZW1vdmVkIHNvb25lciBvciBsYXRlcj8gUGxlYXNl IGZvY3VzIHlvdXIgdGVzdGluZyBvbiBzY3NpLW1xLiANCg0KUmVnYXJkaW5nIHRoZSBhYm92ZSBw YXRjaDogaXQgaXMgd3JvbmcgYmVjYXVzZSBpdCB3aWxsIGNhdXNlIGxvY2t1cHMgZHVyaW5nDQpw YXRoIHJlbW92YWwgZm9yIG90aGVyIGJsb2NrIGRyaXZlcnMuIFBsZWFzZSBkcm9wIHRoaXMgcGF0 Y2guDQoNCkJhcnQu