From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1665C47088 for ; Fri, 2 Dec 2022 17:57:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234336AbiLBR5a (ORCPT ); Fri, 2 Dec 2022 12:57:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234308AbiLBR5V (ORCPT ); Fri, 2 Dec 2022 12:57:21 -0500 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB80AE4656 for ; Fri, 2 Dec 2022 09:57:20 -0800 (PST) Received: by mail-pl1-x62f.google.com with SMTP id jl24so5288147plb.8 for ; Fri, 02 Dec 2022 09:57:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:from:to:cc:subject:date:message-id:reply-to; bh=zY3dCAWELdIR2DelBbTfc6lFEbhpsLzNY6AlazDGnFA=; b=TNiqt/Kih3GZx9kIPNTjp3WWf8XyD37VkqSmW43jYzKujZYnrK1+ERI22E/XLgPcI1 9KU+tO/9rBC8tBzWct1KILEdE4mq/vqJhwdyknhut45/inDh3FwIJmRtdKPD2u7/An81 1thVoPdfOWFPHrEIuuocM9xjrFIp9eUY4eLW0S5v8eTVW+95lCb8o7mE9CGYQ1u0IE+h C5yNpm5nKYnNsW3IpNDe9VhVmA1Upmd/z/+74RpaY3+HIR/NKCpemTi7kZzAmUg7e2oq AH/0/GJZnBc+eglq6tl2XwTriaAorW5s2njZ4YIMOqkVB2xDBXSqBKkn/3Tkq/ZsgxzE 6HwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=zY3dCAWELdIR2DelBbTfc6lFEbhpsLzNY6AlazDGnFA=; b=ETzv/2SUUeimiPMDgjO9+lO6WksOH0fd9vbSW75DIz9pT1G8UC0/ZhPkd3gwRvBACc HzQN9CiV5h1/YfgZmup4jD2hzfFFLNcnXJQYo9bPkmUuksSQzp0fXMQAM2+Txk4/f2s7 2f/a+fZE9VwayUDxH+IMjk1HhFw1NjlZBBMXgzC5WlfFesLDhkSy3ZNy3vD+WeX8c7Y/ syERIKlz3MPlZ/AWZY+CM87fufC4FfrwiZYw9Xd07MREU/1fRh13yfC3M95MvdFCSuTV ToU1kMs9o8zLDM5cfSa5n8I3VtmQ4aaXhJJtnpd9eTnQh/QfovIZACfkB7S0U+d+OY8Q BAlQ== X-Gm-Message-State: ANoB5pk9kd6Dw0rRtY2kqAFB7N7NzCDxw7xabDD3LRIkO7Qs2LGDEY01 KXmvNbNR7E69SnNwINp0cjEC5F9W5q/NDRmp X-Google-Smtp-Source: AA0mqf58O7woVBSokxZVgVvn+h5vBTDUaQ0ygxOn4gX9GAEarjawBUzEeQttEWbZVmoSD2jloVnxYw== X-Received: by 2002:a17:90a:df01:b0:219:720c:29cb with SMTP id gp1-20020a17090adf0100b00219720c29cbmr11756805pjb.76.1670003840234; Fri, 02 Dec 2022 09:57:20 -0800 (PST) Received: from [2620:15c:29:203:130f:d231:f741:46ed] ([2620:15c:29:203:130f:d231:f741:46ed]) by smtp.gmail.com with ESMTPSA id f14-20020a170902684e00b0018971fba556sm5856624pln.139.2022.12.02.09.57.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Dec 2022 09:57:19 -0800 (PST) Date: Fri, 2 Dec 2022 09:57:19 -0800 (PST) From: David Rientjes To: Matthew Wilcox cc: ye.xingchen@zte.com.cn, 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 In-Reply-To: Message-ID: <4a78abbc-4c07-2208-1072-af6d342c3f1a@google.com> References: <202211301651462590168@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 1 Dec 2022, Matthew Wilcox wrote: > 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? > That would be useful to know in addition to why this needs to be part of .config and not simply using the kernel command line option.