linux-kernel - Re: [PATCHv9 29/36] thp: implement split_huge

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Message-ID: <20150803104446.GC25034@node.dhcp.inet.fi>
Date:	Mon, 3 Aug 2015 13:44:46 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Jerome Marchand <jmarchan@...hat.com>
Cc:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Christoph Lameter <cl@...two.org>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Steve Capper <steve.capper@...aro.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	Sasha Levin <sasha.levin@...cle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCHv9 29/36] thp: implement split_huge_pmd()

On Fri, Jul 31, 2015 at 05:06:55PM +0200, Jerome Marchand wrote:
> On 07/20/2015 04:21 PM, Kirill A. Shutemov wrote:
> > Original split_huge_page() combined two operations: splitting PMDs into
> > tables of PTEs and splitting underlying compound page. This patch
> > implements split_huge_pmd() which split given PMD without splitting
> > other PMDs this page mapped with or underlying compound page.
> > 
> > Without tail page refcounting, implementation of split_huge_pmd() is
> > pretty straight-forward.
> 
> While it's significantly simpler than it used to be, straight-forward is
> still not the adjective which come to my mind.

The commit message was written to older revision :-P

-- 
 Kirill A. Shutemov
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