linux-kernel - Re: [PATCH RFC 3/3] proc/smaps: show amount of hwpoison pages

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Date:	Tue, 1 May 2012 13:35:43 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH RFC 3/3] proc/smaps: show amount of hwpoison pages

On Mon, Apr 30, 2012 at 7:29 AM, Konstantin Khlebnikov
<khlebnikov@...nvz.org> wrote:
> This patch adds line "HWPoinson: <size> kB" into /proc/pid/smaps if
> CONFIG_MEMORY_FAILURE=y and some HWPoison pages were found.
> This may be useful for searching applications which use a broken memory.

I dislike "maybe useful" claim. If we don't know exact motivation of a feature,
we can't maintain them especially when a bugfix can't avoid ABI change.

Please write down exact use case.
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