linux-kernel - Re: [PATCH V4 6/6] proc: show MADV

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Message-ID: <20170224021321.GE9818@bbox>
Date:   Fri, 24 Feb 2017 11:13:21 +0900
From:   Minchan Kim <minchan@...nel.org>
To:     Shaohua Li <shli@...com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <Kernel-team@...com>, <mhocko@...e.com>, <hughd@...gle.com>,
        <hannes@...xchg.org>, <riel@...hat.com>,
        <mgorman@...hsingularity.net>, <akpm@...ux-foundation.org>
Subject: Re: [PATCH V4 6/6] proc: show MADV_FREE pages info in smaps

On Wed, Feb 22, 2017 at 10:50:44AM -0800, 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: Minchan Kim <minchan@...nel.org>
> Cc: Hugh Dickins <hughd@...gle.com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Cc: Rik van Riel <riel@...hat.com>
> Cc: Mel Gorman <mgorman@...hsingularity.net>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: Shaohua Li <shli@...com>
Acked-by: Minchan Kim <minchan@...nel.org>