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Date: Thu, 23 Feb 2017 11:16:29 -0500
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH V4 6/6] proc: show MADV_FREE pages info in smaps
Message-ID: <20170223161629.GD4031@cmpxchg.org>
References: <cover.1487788131.git.shli@fb.com>
 <7f22d33b2f388ce33448faa75be75f9a52d57052.1487788131.git.shli@fb.com>
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Sender: owner-linux-mm@kvack.org
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To: Shaohua Li <shli@fb.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Kernel-team@fb.com, mhocko@suse.com, minchan@kernel.org, hughd@google.com, riel@redhat.com, mgorman@techsingularity.net, akpm@linux-foundation.org

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@suse.com>
> Cc: Minchan Kim <minchan@kernel.org>
> Cc: Hugh Dickins <hughd@google.com>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
> Cc: Rik van Riel <riel@redhat.com>
> Cc: Mel Gorman <mgorman@techsingularity.net>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Shaohua Li <shli@fb.com>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>

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