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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 72CBFC433DF for ; Tue, 23 Jun 2020 01:40:42 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2032220767 for ; Tue, 23 Jun 2020 01:40:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Q8HqP+w2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2032220767 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 80DB96B0002; Mon, 22 Jun 2020 21:40:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7BE0B6B0005; Mon, 22 Jun 2020 21:40:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6D3AB6B0006; Mon, 22 Jun 2020 21:40:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0219.hostedemail.com [216.40.44.219]) by kanga.kvack.org (Postfix) with ESMTP id 51DF46B0002 for ; Mon, 22 Jun 2020 21:40:41 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id D8A8933C4 for ; Tue, 23 Jun 2020 01:40:40 +0000 (UTC) X-FDA: 76958772240.27.stew17_260399426e37 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin27.hostedemail.com (Postfix) with ESMTP id AF6D03D66B for ; Tue, 23 Jun 2020 01:40:40 +0000 (UTC) X-HE-Tag: stew17_260399426e37 X-Filterd-Recvd-Size: 2593 Received: from mail-qv1-f66.google.com (mail-qv1-f66.google.com [209.85.219.66]) by imf37.hostedemail.com (Postfix) with ESMTP for ; Tue, 23 Jun 2020 01:40:40 +0000 (UTC) Received: by mail-qv1-f66.google.com with SMTP id t7so112379qvl.8 for ; Mon, 22 Jun 2020 18:40:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=OGZ2cochYnljWesnkeLwt/xLq4I2d6X+yMWMSyyk9nY=; b=Q8HqP+w2wcdmBrXCzF/O9Mx4nbZ9UOgQkwUx3lqCddJKM+NpCacs5VHR03qjCSe84s 94RQqZONQqEnEN96zwGBxFt8U5TevsSj+M6Fj2BgfanTLfakVQW1lqUYS3rcVF/8s3w3 ZqpQP1VBTNv/K6oXxWzWUOTTGZHwBjHXgjFlGDH7DXU32vhJuZDXIde138CDn4rG2wXj skPK3aSYN9CNbwkJX1dHQeIAw0j4ZICc+FUPYG0u07hzOUCpgvraUXrFmcdhB/dJ8VV0 XfqiAPtUJxK30odcTma/KvH7/7MoXn4wsxHjfOOZLWuspDBzaJwcU6s4Jtw5R9Y1shS3 NY+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=OGZ2cochYnljWesnkeLwt/xLq4I2d6X+yMWMSyyk9nY=; b=QwGAy1R4YJocWKKts9BIZE2BKbdyT9l55/NQ96iZBhgzioMgvznSAgP09VLZA6ASzN ncFigpcuCQz1zoUC/p5QxKIDcrAem9KdkEzUo262FcUZ5B9oiWSMbp5zsRvETW6PlxLy 2tfh7jxFFpkchWLrfh7migNvlxzQ8CyJU0u9gTIZAbPXwzpw6Dc9YKokIEi7Y+nI5QkH LyyjdzWQOlzEvDhsNzp4aykmlmPQ6mu8vW9B3JXYCFJyYuem2PoH+gXZCGq6Oms1aNyU sKWGe9t+38bgKCFOHzZ8R+CCKo2YDswSJTg2QVQowxurhE6aN2tu/EuuHDZVLChmtY+N wBXg== X-Gm-Message-State: AOAM530i864Y7CdizbDpjzNXIBh5kh31H5D5y9upnmLgDT6I7aAWKTUk WxKonVLSGfRuX3OMPZvWIY/weHGdl4tcDqQ+HaH0h1RGOD9weQ== X-Google-Smtp-Source: ABdhPJxAkx5ws48xCQZLA6tcrkUpyQcXKzKi/6rUS6ClhJgL9lhHNp1UkSBtS+vl5LNRk2asFtkEYZz1AdI+PT714So= X-Received: by 2002:ad4:48c8:: with SMTP id v8mr24628509qvx.15.1592876439593; Mon, 22 Jun 2020 18:40:39 -0700 (PDT) MIME-Version: 1.0 From: =?UTF-8?B?5a2Z5LiW6b6ZIHN1bnNoaWxvbmc=?= Date: Tue, 23 Jun 2020 09:40:28 +0800 Message-ID: Subject: What are the potential problems if the option CONFIG_MIGRATION is disabled? To: linux-mm@kvack.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: AF6D03D66B X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.283335, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: As the subject, I find it has some relation with the error: "page allocation failure: order:9".This error occurs frequently if this option is disabled on linux-4.19.82. Could memory fragmentation still be reduced by other methods if this option is disabled?