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Date:   Thu, 23 Feb 2017 11:16:29 -0500
From:   Johannes Weiner <>
To:     Shaohua Li <>
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 <>
> Cc: Minchan Kim <>
> Cc: Hugh Dickins <>
> Cc: Johannes Weiner <>
> Cc: Rik van Riel <>
> Cc: Mel Gorman <>
> Cc: Andrew Morton <>
> Signed-off-by: Shaohua Li <>

Acked-by: Johannes Weiner <>

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