linux-kernel - Re: [PATCH] HWPOISON: Implement hwpoison-on-free for soft offlining

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Message-ID: <20101012124135.GA15163@localhost>
Date:	Tue, 12 Oct 2010 20:41:35 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] HWPOISON: Implement hwpoison-on-free for soft offlining

> >> +		if (PageHWPoisonOnFree(page))
> >> +			hwpoison_page_on_free(page);
> > hwpoison_page_on_free() seems to be undefined when
> > CONFIG_HWPOISON_ON_FREE is not defined.
> 
> Yes, but I rely on the compiler never generating the call in this case 
> because
> the test is zero.
> 
> It would fail on a unoptimized build, but the kernel doesn't support 
> that anyways.

Fair enough.

Reviewed-by: Wu Fengguang <fengguang.wu@...el.com>

> Thanks for the review.

:)

Thanks,
Fengguang
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