linux-kernel - Re: [PATCH 11/15] HWPOISON: The high level memory error handler in the VM v8

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Message-ID: <20090621085721.GD8218@one.firstfloor.org>
Date:	Sun, 21 Jun 2009 10:57:21 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, hugh.dickins@...cali.co.uk,
	npiggin@...e.de, chris.mason@...cle.com,
	Rik van Riel <riel@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>, Ingo Molnar <mingo@...e.hu>,
	Minchan Kim <minchan.kim@...il.com>,
	Mel Gorman <mel@....ul.ie>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andi Kleen <andi@...stfloor.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH 11/15] HWPOISON: The high level memory error handler in the VM v8

> v8:
> check for page_mapped_in_vma() on anon pages (Hugh, Fengguang)

This change was no good as discussed earlier.

> test and use page->mapping instead of page_mapping() (Fengguang)
> cleanup some early kill comments (Fengguang)

This stuff belongs into the manpage. I haven't written it yet,
but will. I don't think kernel source comments is the right place.

> introduce invalidate_inode_page() and don't remove dirty/writeback pages
> from page cache (Nick, Fengguang)

I'm still dubious this is a good idea, it means potentially a lot 
of pages not covered.

-Andi
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