Received: by 10.192.165.148 with SMTP id m20csp1047514imm; Thu, 10 May 2018 04:56:50 -0700 (PDT) X-Google-Smtp-Source: AB8JxZoExqw7Li/oCEbUN/Lv/aB1ZIjcp2enrVHukEz3k/JtDOuWABCRe/6Y+raLX4SBtbyURdEs X-Received: by 2002:a63:6807:: with SMTP id d7-v6mr924254pgc.332.1525953410716; Thu, 10 May 2018 04:56:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1525953410; cv=none; d=google.com; s=arc-20160816; b=Hg352iqhtir1xkrcXdnTcBh+ByUXe5vOEOY17zplEpI8RSnYUD3dwMSjpPyf2IzK8S YJWlZxsacxoRntspuHb2BVxvsGWb8ifCwuSHkrsQQzbPUdWN7TL6DX2iiz+QKIMPpUCU 4YzuojCPMkPOlnJDb8D8QfAY8klSE+6q/O58HYU10nq9qzXZwadalIYx1C0SdNRYq5o1 3WMmFjMhORwQa4Q/oKyHTK1WKOIsxHOwnONfZ59xR8O88yRYKewC8h0c7ntRqZbnrjmL E8oqKLBWdVNuLg3sB3Bckrl7hMSFJuLy13+TXRfrM9dAoNFALymCEiM1GLOI+/CEkxfW xu/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:dkim-signature :arc-authentication-results; bh=mvvvzOfSn4znPD7xVula6TwlyE0WYSBcLJBaGJwvF0I=; b=R8UGUrFkiCmIvpMkooAzh2yraikA6+vekYAviOgg4di4svgCflyxTgcfVnvFGiPhZ8 WgoQLEsruVdx+lIG2tm/j9kPjh4KsBfKv6imk1L7iAb/SKTFKk7hCBgJZX4bYzzAqoB1 qTeLyM9vSjg71mGrRJUIkWrnXqetiD63J41RHApEDOHD2b7FNxqAjWPAFzN0SXOAMa8u NJWljgyLS4zVP4/GxY8BrYKHkljIimAi9jPco1Y/VpQYXUcNzltCZxh+P2sCR8P9nDH4 04daggQeVX4b1HtL09J3Wq2pj7RHyd0oZxDyfTR2G0y1hRFCsdK1njKZiTIgAJu11KeU x58Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2017-10-26 header.b=PizO5obq; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g1-v6si537372pge.538.2018.05.10.04.56.35; Thu, 10 May 2018 04:56:50 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2017-10-26 header.b=PizO5obq; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757213AbeEJL4W (ORCPT + 99 others); Thu, 10 May 2018 07:56:22 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:41252 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757141AbeEJL4V (ORCPT ); Thu, 10 May 2018 07:56:21 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w4ABtvT9066155 for ; Thu, 10 May 2018 11:56:20 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=mime-version : references : in-reply-to : from : date : message-id : subject : to : cc : content-type; s=corp-2017-10-26; bh=mvvvzOfSn4znPD7xVula6TwlyE0WYSBcLJBaGJwvF0I=; b=PizO5obqgZJuURJT6b6SdOn+VvAMIbTi5HAB5WssfMyyMhy00gi4gQSaXc1RLTSEL++i MaTePyvLf+UIkxGNpnY7IR05x9sUe60frwlC2IAVlaVnur4+2pyblXCLSimApKulPrDY 6R4e9KThqgHHXmAVQCFO7HNGBR96u2sSdj6ZthAaeXiR37ppUzZm+YXC7Tn5H4o85qoB +Af1TeYuo8blB7MUpGLL7cajZdHrtr+AfTn0i9NniFeGx+tzOQllKsxutMG1oQ3CAn+d os/8cXhEthZSXOIRBCpU9M7tzScQL6GvIi7Ct2cola3C5RaS6FEGmXv2GXhK3u/wRSna cQ== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp2130.oracle.com with ESMTP id 2hv6m4k6yr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 10 May 2018 11:56:20 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w4ABuIAW019154 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 10 May 2018 11:56:18 GMT Received: from abhmp0015.oracle.com (abhmp0015.oracle.com [141.146.116.21]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id w4ABuHOR012078 for ; Thu, 10 May 2018 11:56:18 GMT Received: from mail-oi0-f54.google.com (/209.85.218.54) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 10 May 2018 04:56:17 -0700 Received: by mail-oi0-f54.google.com with SMTP id l1-v6so1518375oii.1 for ; Thu, 10 May 2018 04:56:17 -0700 (PDT) X-Gm-Message-State: ALKqPwcZoTQ2jGMnqn8Cpw7bkF2w+YTsVrQvLdnmdYEwJbkXow2h4Kak dMwI10tzy6sj+J4W5Ki53KZWBQclGJDfVJg9e/o= X-Received: by 2002:aca:d8d6:: with SMTP id p205-v6mr616828oig.136.1525953377377; Thu, 10 May 2018 04:56:17 -0700 (PDT) MIME-Version: 1.0 References: <20180509191713.23794-1-pasha.tatashin@oracle.com> <20180509210920.GZ32366@dhcp22.suse.cz> In-Reply-To: <20180509210920.GZ32366@dhcp22.suse.cz> From: Pavel Tatashin Date: Thu, 10 May 2018 11:55:42 +0000 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH] mm: allow deferred page init for vmemmap only To: mhocko@kernel.org Cc: Steven Sistare , Daniel Jordan , Andrew Morton , LKML , tglx@linutronix.de, Linux Memory Management List , mgorman@techsingularity.net, mingo@kernel.org, peterz@infradead.org, Steven Rostedt , Fengguang Wu , Dennis Zhou Content-Type: text/plain; charset="UTF-8" X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8888 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=3 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=778 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805100118 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > This doesn't really explain why CONFIG_SPARSMEM or DISCONTIG has the > problem. Hi Michal, Thank you for reviewing this patch. I sent out a version two of this patch, with expanded explanation of the problem. Thank you, Pavel