Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp1155709rwb; Thu, 1 Dec 2022 13:12:44 -0800 (PST) X-Google-Smtp-Source: AA0mqf4gGZVMpTt0S3thGLaBy8n71fHXBbAvEIZA/HUxfrFD3QEnAAkDL+fPRNO/OkD9g7asMUMg X-Received: by 2002:aa7:9e88:0:b0:575:db9c:15ef with SMTP id p8-20020aa79e88000000b00575db9c15efmr9317424pfq.32.1669929164540; Thu, 01 Dec 2022 13:12:44 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1669929164; cv=none; d=google.com; s=arc-20160816; b=RZ/+xaSGqk1zs4H27QJAygTQhwgn2sYEpCJXfoPoNmjk+2tgjp7bCI4b8E0MM24SGo V4q/OwILUAEcDIUz7MiJP41WHgculanwatXX2Ex+r2ZRJY2ul7ZbsuQ2VHdQKonlFbxu Wg1CxazON8vSATNAbuM9TrorO4UMqJPtWX5EfbmothJr0jDYq1fXKS6XnlY2DOQgpqQx +zejm4i2d+b9dv0Ei0MtyNWUwijuF18b9sC5F1hbn1rrz/vqKq2m5F/2b/wxR9Ngoftw eWAkaMTTv6bevdlc0X51N0ZpNByhLY29b/DA+nrbEL+3wC1GogDbIHk5OOTgsZ3iCphx xTNw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=LKGrEeIq6wXlpKjGZw/1KiVMGn2zrCU8BdExFG+pM7o=; b=z0VcZelEo4FS9Kxpmya9Bi4FW4k2qBHFhMUkQUaW0Fx/GpiFjCd6kvQihxlciKWOxY 6txg9PWk5sQcHDdr1cgWNvsYlLVhdRF4ffs6G/tSLX48ccldJPyLddQ6EX+hJMD6FpIj WXkeW+mkEkiEGDGTl5QRlaUu8tumWSUseVU7nsjXW6jtZru0VpwrqiO7mCYsRiUjZ8+m aRaxFrnjlrFa2rFJC7KMrVWVclRXxIe9wd2qSwSKMV4dTijfwXPmI3K9Z9v+aNnwXFhQ WgDChcf3o3Jr6yIaAKXKiAW77xt4BtOKLHeWX3ga3ZCslj/OxCxetOBJ6WeQOsqPPnoc klvQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=ixFSF6hV; 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 Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id w8-20020a63fb48000000b00476e21bc1bdsi5265253pgj.162.2022.12.01.13.12.30; Thu, 01 Dec 2022 13:12:44 -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; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=ixFSF6hV; 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 S230348AbiLAU0k (ORCPT + 81 others); Thu, 1 Dec 2022 15:26:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230209AbiLAU0i (ORCPT ); Thu, 1 Dec 2022 15:26:38 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 86A93BFCEF for ; Thu, 1 Dec 2022 12:26:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=LKGrEeIq6wXlpKjGZw/1KiVMGn2zrCU8BdExFG+pM7o=; b=ixFSF6hVMMo0C7tCMl26+N0aBo LKhP0lEYoxwAsGhVJlIFgHF9+DFwKOB1QzMw2ZWyGwOJHqhRW2ylU/VdnXGRM75K/RnvOR6TrBZEC JmrjzTqGDY5rEYTTsgqAqwKbqz9GKyEElx0Hd0ORzw1IuVWUm4aCSntT6NBpGJOs8y9XQXpGu/tIj 7ddNX8B4Ui3WbWSG4O1MYlDRgIf6AEO2dFIFVNczGQQCdIf2/nd842rd1iPQC6ss5aqoreRTWPEaJ RHKLj+eplDFumE6o31V3jWTJGvuut3cZP39XqJh1tIDqlk077ulMqqKzgAF5WOEOQWs8tlaDIAqa1 3IIAWuzQ==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0q8b-00GuDr-E5; Thu, 01 Dec 2022 20:26:29 +0000 Date: Thu, 1 Dec 2022 20:26:29 +0000 From: Matthew Wilcox To: ye.xingchen@zte.com.cn Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/huge_memory: add TRANSPARENT_HUGEPAGE_NEVER for THP Message-ID: References: <202211301651462590168@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202211301651462590168@zte.com.cn> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE 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 On Wed, Nov 30, 2022 at 04:51:46PM +0800, ye.xingchen@zte.com.cn wrote: > From: ye xingchen > > Sometimes we may need the /sys/kernel/mm/transparent_hugepage/enabled to > default as [never] at the first time. What is going wrong with THP enabled that you need to disable it?