From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751909AbdB1DZY (ORCPT <rfc822;w@1wt.eu>);
        Mon, 27 Feb 2017 22:25:24 -0500
Received: from out0-145.mail.aliyun.com ([140.205.0.145]:38303 "EHLO
        out0-145.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751378AbdB1DZW (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 27 Feb 2017 22:25:22 -0500
X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R221e4;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01l10425;MF=hillf.zj@alibaba-inc.com;NM=1;PH=DS;RN=11;SC=85;SR=0;TI=SMTPD_---.7ilAbMa_1488252237;
Reply-To: "Hillf Danton" <hillf.zj@alibaba-inc.com>
From: "Hillf Danton" <hillf.zj@alibaba-inc.com>
To: "'Shaohua Li'" <shli@fb.com>, <linux-mm@kvack.org>,
        <linux-kernel@vger.kernel.org>
Cc: <Kernel-team@fb.com>, <mhocko@suse.com>, <minchan@kernel.org>,
        <hughd@google.com>, <hannes@cmpxchg.org>, <riel@redhat.com>,
        <mgorman@techsingularity.net>, <akpm@linux-foundation.org>
References: <cover.1487965799.git.shli@fb.com> <89efde633559de1ec07444f2ef0f4963a97a2ce8.1487965799.git.shli@fb.com>
In-Reply-To: <89efde633559de1ec07444f2ef0f4963a97a2ce8.1487965799.git.shli@fb.com>
Subject: Re: [PATCH V5 6/6] proc: show MADV_FREE pages info in smaps
Date: Tue, 28 Feb 2017 11:23:57 +0800
Message-ID: <06f201d29172$196e6450$4c4b2cf0$@alibaba-inc.com>
MIME-Version: 1.0
Content-Type: text/plain;
        charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Outlook 14.0
Thread-Index: AQIuD9vBFeLkbhxOzv8ei/Ca5089rgFow8F/oLt9+fA=
Content-Language: zh-cn
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


On February 25, 2017 5:32 AM Shaohua Li wrote: 
> 
> show MADV_FREE pages info of each vma in smaps. The interface is for
> diganose or monitoring purpose, userspace could use it to understand
> what happens in the application. Since userspace could dirty MADV_FREE
> pages without notice from kernel, this interface is the only place we
> can get accurate accounting info about MADV_FREE pages.
> 
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: Hugh Dickins <hughd@google.com>
> Cc: Rik van Riel <riel@redhat.com>
> Cc: Mel Gorman <mgorman@techsingularity.net>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Acked-by: Johannes Weiner <hannes@cmpxchg.org>
> Acked-by: Minchan Kim <minchan@kernel.org>
> Signed-off-by: Shaohua Li <shli@fb.com>
> ---

Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>