linux-kernel - Re: [PATCH] [31/31] HWPOISON: Add a madvise() injector for soft page offlining

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Message-ID: <20100619195242.GS18946@basil.fritz.box>
Date:	Sat, 19 Jun 2010 21:52:42 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Michael Kerrisk <mtk.manpages@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>, fengguang.wu@...el.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] [31/31] HWPOISON: Add a madvise() injector for soft
 page offlining

> .TP
> .BR MADV_SOFT_OFFLINE " (Since Linux 2.6.33)
> Soft offline the pages in the range specified by
> .I addr
> and
> .IR length .
> This memory of each page in the specified range is copied to a new page,

Actually there are some cases where it's also dropped if it's cached page.

Perhaps better would be something more fuzzy like

"the contents are preserved"

> and the original page is offlined
> (i.e., no longer used, and taken out of normal memory management).

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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