linux-kernel - Re: [PATCHv3, RFC 09/34] thp: represent file thp pages in meminfo and friends

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Message-Id: <20130416144917.8FEAEE0085@blue.fi.intel.com>
Date:	Tue, 16 Apr 2013 17:49:17 +0300 (EEST)
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Dave Hansen <dave@...1.net>
Cc:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Hugh Dickins <hughd@...gle.com>,
	Wu Fengguang <fengguang.wu@...el.com>, Jan Kara <jack@...e.cz>,
	Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org,
	Andi Kleen <ak@...ux.intel.com>,
	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Hillf Danton <dhillf@...il.com>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv3, RFC 09/34] thp: represent file thp pages in meminfo and
 friends

Dave Hansen wrote:
> On 04/05/2013 04:59 AM, Kirill A. Shutemov wrote:
> > The patch adds new zone stat to count file transparent huge pages and
> > adjust related places.
> > 
> > For now we don't count mapped or dirty file thp pages separately.
> 
> I can understand tracking NR_FILE_TRANSPARENT_HUGEPAGES itself.  But,
> why not also account for them in NR_FILE_PAGES?  That way, you don't
> have to special-case each of the cases below:

Good point.
To be consistent I'll also convert NR_ANON_TRANSPARENT_HUGEPAGES to be
accounted in NR_ANON_PAGES.

-- 
 Kirill A. Shutemov
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