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[2620:137:e000::1:20]) by mx.google.com with ESMTP id w3-20020a170902e88300b00188dba5d7dbsi15707200plg.78.2022.11.22.04.43.10; Tue, 22 Nov 2022 04:43:22 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233669AbiKVMOi (ORCPT + 90 others); Tue, 22 Nov 2022 07:14:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232252AbiKVMOh (ORCPT ); Tue, 22 Nov 2022 07:14:37 -0500 Received: from zju.edu.cn (spam.zju.edu.cn [61.164.42.155]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3218E303C2; Tue, 22 Nov 2022 04:14:34 -0800 (PST) Received: by ajax-webmail-mail-app3 (Coremail) ; Tue, 22 Nov 2022 20:14:30 +0800 (GMT+08:00) X-Originating-IP: [10.14.30.50] Date: Tue, 22 Nov 2022 20:14:30 +0800 (GMT+08:00) X-CM-HeaderCharset: UTF-8 From: "Jinlong Chen" To: "Christoph Hellwig" Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 0/2] elevator: restore old io scheduler on failure in elevator_switch X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.13 build 20210104(ab8c30b6) Copyright (c) 2002-2022 www.mailtech.cn zju.edu.cn In-Reply-To: <20221121071305.GB23882@lst.de> References: <20221121071305.GB23882@lst.de> Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=UTF-8 MIME-Version: 1.0 Message-ID: <6d74b4a9.5489.1849f42de2d.Coremail.nickyc975@zju.edu.cn> X-Coremail-Locale: zh_CN X-CM-TRANSID: cC_KCgA3jw4mvXxjDPhdCQ--.64658W X-CM-SenderInfo: qssqjiaqqzq6lmxovvfxof0/1tbiAgICB1ZdtcinewAAsv X-Coremail-Antispam: 1Ur529EdanIXcx71UUUUU7IcSsGvfJ3iIAIbVAYjsxI4VWxJw CS07vEb4IE77IF4wCS07vE1I0E4x80FVAKz4kxMIAIbVAFxVCaYxvI4VCIwcAKzIAtYxBI daVFxhVjvjDU= X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS, SPF_PASS autolearn=ham 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: X-Mailing-List: linux-kernel@vger.kernel.org PiBPbiBGcmksIE5vdiAxOCwgMjAyMiBhdCAwODowOTo1MlBNICswODAwLCBKaW5sb25nIENoZW4g d3JvdGU6Cj4gPiBlbGV2YXRvcl9zd2l0Y2ggY29udGFpbnMgdGhlIGZhbGxiYWNrIGxvZ2ljIGlu IHNxIGVyYSwgYnV0IGl0IHdhcyByZW1vdmVkCj4gPiB3aGVuIG1vdmluZyB0byBtcSAoY29tbWl0 OiBhMWNlMzVmYTQ5ODUyZGI2MGZjNmUyNjgwMzg1MzBiZTUzM2M1YjE1KSwKPiA+IGxlYXZpbmcg dGhlIGRvY3VtZW50IG1pc21hdGNoZWQgd2l0aCB0aGUgYmVoYXZpb3IuIEFzIGZhciBhcyBJIGNh biBzZWUsCj4gPiByZXN0b3JpbmcgdGhlIG9sZCBpbyBzY2hlZHVsZXIgaXMgbW9yZSByZWFzb25h YmxlIHRoYW4ganVzdCBsZWF2aW5nIHRoZQo+ID4gc2NoZWR1bGVyIG5vbmUsIGhlbmNlIHRoZXJl IGlzIHRoZSBzZXJpZXMuCj4gCj4gV2hhdCBmYWlsdXJlIHNjZW5hcmlvdSBjYW4geW91IHRoaW5r IG9mZiB3aGVyZSBzd2l0Y2hpbmcgdG8gdGhlIGludGVuZGVkCj4gc2NoZWR1bGUgZmFpbHMsIGJ1 dCBzd2l0Y2hpbmcgYmFjayB0byB0aGUgcHJldmlvdXMgb25lIHdpbGwgc3VjY2VlZD8KCk1vc3Rs eSBmYWlsdXJlcyBzcGVjaWZpYyB0byB0aGUgaW50ZW5kZWQgaW8gc2NoZWR1bGVyLCBsaWtlIGNv bnN1bWluZyBtb3JlCnJlc291cmNlcyB0aGFuIHRoZSBvbGQgb25lIHRoYXQgdGhlIHN5c3RlbSBj YW4gbm90IGFmZm9yZC4gQnV0IHN1cmUgaXQncwpyYXJlLCBzbyBkbyB5b3UgdGhpbmsgSSBzaG91 bGQganVzdCBjb3JyZWN0IHRoZSBvdXRkYXRlZCBkb2N1bWVudD8KClRoYW5rcyEKSmlubG9uZyBD aGVuCgo=