linux-kernel - Re: [PATCH] [16/19] HWPOISON: Enable .remove_error

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Message-ID: <20090812082331.GD28848@basil.fritz.box>
Date:	Wed, 12 Aug 2009 10:23:31 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>, tytso@....edu,
	hch@...radead.org, mfasheh@...e.com, aia21@...tab.net,
	hugh.dickins@...cali.co.uk, swhiteho@...hat.com,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, fengguang.wu@...el.com,
	Satoshi OSHIMA <satoshi.oshima.fk@...achi.com>,
	Taketoshi Sakuraba <taketoshi.sakuraba.hc@...achi.com>
Subject: Re: [PATCH] [16/19] HWPOISON: Enable .remove_error_page for
	migration aware file systems

> page corruption, IMO, because by definition they should be able to
> tolerate panic. But if they do not know about this change to -EIO
> semantics, then it is quite possible to cause problems.

There's no change really. You already have this problem with
any metadata error, which can cause similar trouble.
If the application handles those correctly it will also 
handle hwpoison correctly.

-Andi

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