linux-kernel - Re: RFC: Implement hwpoison on free for soft offlining

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Message-Id: <20101013091553.ADB1.A69D9226@jp.fujitsu.com>
Date:	Wed, 13 Oct 2010 09:15:32 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	kosaki.motohiro@...fujitsu.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, fengguang.wu@...el.com,
	akpm@...ux-foundation.org
Subject: Re: RFC: Implement hwpoison on free for soft offlining

> > To me, it's no problem if this keep 64bit only. IOW, I only dislike to
> > add 32bit page flags.
> > 
> > Yeah, memory corruption is very crap and i think your effort has a lot
> > of worth :)
> 
> Thanks.
> 
> > 
> > 
> > offtopic, I don't think CONFIG_MEMORY_FAILURE and CONFIG_HWPOISON_ON_FREE
> > are symmetric nor easy understandable. can you please consider naming change?
> > (example, CONFIG_HWPOISON/CONFIG_HWPOISON_ON_FREE, 
> > CONFIG_MEMORY_FAILURE/CONFIG_MEMORY_FAILURE_SOFT_OFFLINE)
> 
> memory-failure was the old name before hwpoison as a term was invented
> by Andrew.
> 
> In theory it would make sense to rename everything to "hwpoison" now.
> But I decided so far the disadvantages from breaking user configurations
> and the impact from renaming files far outweight the small benefits
> in clarity.
> 
> So right now I prefer to keep the status quo, but name everything
> new hwpoison.

ok. I've got it. thanks :)


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