linux-kernel - Re: [PATCH 2/2] [BUGFIX] pagemap: fix pfn calculation for hugepage

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Date:	Wed, 24 Mar 2010 14:18:45 +0900
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org, andi.kleen@...el.com,
	fengguang.wu@...el.com
Subject: Re: [PATCH 2/2] [BUGFIX] pagemap: fix pfn calculation for hugepage

On Fri, Mar 19, 2010 at 05:13:10PM +0900, KAMEZAWA Hiroyuki wrote:
...
> > 
> > But, this means hugeltb_entry() is not called per hugetlb entry...isn't it ?
> > 
> > Why hugetlb_entry() cannot be called per hugeltb entry ? Don't we need a code
> > for a case as pmd_size != hugetlb_size in walk_page_range() for generic fix ?
> > 
> 
> How about this style ? This is an idea-level patch. not tested at all.
> (I have no test enviroment for multiple hugepage size.)
> 
> feel free to reuse fragments from this patch.
>

So the point is calling hugetlb_entry() for each huge page, right?

It looks good.
I've rewritten my patch based on your idea and make sure it works.
Is it ok to add your Signed-off-by?

Thanks,
Naoya Horiguchi
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