linux-kernel - Re: [PATCH V5 6/6] proc: show MADV

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Message-ID: <06f201d29172$196e6450$4c4b2cf0$@alibaba-inc.com>
Date:   Tue, 28 Feb 2017 11:23:57 +0800
From:   "Hillf Danton" <hillf.zj@...baba-inc.com>
To:     "'Shaohua Li'" <shli@...com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>
Cc:     <Kernel-team@...com>, <mhocko@...e.com>, <minchan@...nel.org>,
        <hughd@...gle.com>, <hannes@...xchg.org>, <riel@...hat.com>,
        <mgorman@...hsingularity.net>, <akpm@...ux-foundation.org>
Subject: Re: [PATCH V5 6/6] proc: show MADV_FREE pages info in smaps


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@...e.com>
> Cc: Hugh Dickins <hughd@...gle.com>
> Cc: Rik van Riel <riel@...hat.com>
> Cc: Mel Gorman <mgorman@...hsingularity.net>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Acked-by: Johannes Weiner <hannes@...xchg.org>
> Acked-by: Minchan Kim <minchan@...nel.org>
> Signed-off-by: Shaohua Li <shli@...com>
> ---

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