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[2620:137:e000::1:20]) by mx.google.com with ESMTP id g10-20020a1709067c4a00b00781b6ce15e1si9878326ejp.101.2022.11.22.07.36.44; Tue, 22 Nov 2022 07:37:06 -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 S233434AbiKVO6v (ORCPT + 90 others); Tue, 22 Nov 2022 09:58:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234069AbiKVO6Z (ORCPT ); Tue, 22 Nov 2022 09:58:25 -0500 Received: from zju.edu.cn (mail.zju.edu.cn [61.164.42.155]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B41707720C; Tue, 22 Nov 2022 06:55:56 -0800 (PST) Received: by ajax-webmail-mail-app3 (Coremail) ; Tue, 22 Nov 2022 22:55:46 +0800 (GMT+08:00) X-Originating-IP: [10.14.30.50] Date: Tue, 22 Nov 2022 22:55:46 +0800 (GMT+08:00) X-CM-HeaderCharset: UTF-8 From: "Jinlong Chen" To: axboe@kernel.dk Cc: hch@lst.de, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/4] elevator: printk a warning if switching to a new io scheduler fails 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: References: Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=UTF-8 MIME-Version: 1.0 Message-ID: <17ab2daa.5b5b.1849fd681f2.Coremail.nickyc975@zju.edu.cn> X-Coremail-Locale: zh_CN X-CM-TRANSID: cC_KCgD3_6vy4nxjLJVgCQ--.57835W X-CM-SenderInfo: qssqjiaqqzq6lmxovvfxof0/1tbiAgECB1ZdtcivzQABsT X-Coremail-Antispam: 1Ur529EdanIXcx71UUUUU7IcSsGvfJ3iIAIbVAYjsxI4VW7Jw 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 PiAKPiBwcmludGsgYSB3YXJuaW5nIHRvIGluZGljYXRlIHRoYXQgdGhlIGlvIHNjaGVkdWxlciBo YXMgYmVlbiBzZXQgdG8gbm9uZQo+IGlmIHN3aXRjaGluZyB0byBhIG5ldyBpbyBzY2hlZHVsZXIg ZmFpbHMuCj4gCj4gU2lnbmVkLW9mZi1ieTogSmlubG9uZyBDaGVuIDxuaWNreWM5NzVAemp1LmVk dS5jbj4KPiAtLS0KPiAgYmxvY2svZWxldmF0b3IuYyB8IDYgKysrKysrCj4gIDEgZmlsZSBjaGFu Z2VkLCA2IGluc2VydGlvbnMoKykKPiAKPiBkaWZmIC0tZ2l0IGEvYmxvY2svZWxldmF0b3IuYyBi L2Jsb2NrL2VsZXZhdG9yLmMKPiBpbmRleCAwMWFhOWYzOGYyMmUuLjFmYTQ1NzE3YjFkNiAxMDA2 NDQKPiAtLS0gYS9ibG9jay9lbGV2YXRvci5jCj4gKysrIGIvYmxvY2svZWxldmF0b3IuYwo+IEBA IC02ODMsNiArNjgzLDEyIEBAIGludCBlbGV2YXRvcl9zd2l0Y2goc3RydWN0IHJlcXVlc3RfcXVl dWUgKnEsIHN0cnVjdCBlbGV2YXRvcl90eXBlICpuZXdfZSkKPiAgb3V0X3VuZnJlZXplOgo+ICAJ YmxrX21xX3VucXVpZXNjZV9xdWV1ZShxKTsKPiAgCWJsa19tcV91bmZyZWV6ZV9xdWV1ZShxKTsK PiArCj4gKwlpZiAocmV0KSB7Cj4gKwkJcHJfd2FybigiZWx2OiBzd2l0Y2ggdG8gXCIlc1wiIGZh aWxlZCwgZmFsbGluZyBiYWNrIHRvIFwibm9uZVwiXG4iLAo+ICsJCQluZXdfZS0+ZWxldmF0b3Jf bmFtZSk7Cj4gKwl9Cj4gKwo+ICAJcmV0dXJuIHJldDsKPiAgfQo+ICAKCkhpLCBKZW5zIQoKVGhp cyBwYXRjaCBpcyBzdWdnZXN0ZWQgYnkgQ2hyaXN0b3BoLCBidXQgSSBmb3Jnb3QgdG8gYWRkIHRo ZSBTdWdnZXN0ZWQtYnkKdGFnLiBXb3VsZCB5b3UgcGxlYXNlIGFkZCAiU3VnZ2VzdGVkLWJ5OiBD aHJpc3RvcGggSGVsbHdpZyA8aGNoQGxzdC5kZT4iCmlmIHlvdSBhcHBseSB0aGUgcGF0Y2g/CgpU aGFua3MhCkppbmxvbmcgQ2hlbgo=