linux-kernel - Re: [PATCH, RFC 7/9] thp: implement splitting pmd for huge zero page

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Message-ID: <20120831140627.GA29891@otc-wbsnb-06>
Date:	Fri, 31 Aug 2012 17:06:27 +0300
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	Andi Kleen <ak@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	linux-kernel@...r.kernel.org,
	"Kirill A. Shutemov" <kirill@...temov.name>
Subject: Re: [PATCH, RFC 7/9] thp: implement splitting pmd for huge zero page

On Thu, Aug 16, 2012 at 09:27:38PM +0200, Andrea Arcangeli wrote:
> On Thu, Aug 09, 2012 at 12:08:18PM +0300, Kirill A. Shutemov wrote:
> > +	if (is_huge_zero_pmd(*pmd)) {
> > +		__split_huge_zero_page_pmd(mm, pmd, address);
> 
> This will work fine but it's a bit sad having to add "address" at
> every call, just to run a find_vma().

Hm. address is also used to calculate haddr..

It seems we need pass address anyway. I mean vma + address.

-- 
 Kirill A. Shutemov

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