From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andy Whitcroft <apw@shadowen.org>, linux-mm@kvack.org
Subject: Re: Sparsemem: Do not reserve section flags if VMEMMAP is in use
Date: Wed, 14 Nov 2007 09:19:38 +0900 [thread overview]
Message-ID: <20071114091938.57d0f44c.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0711131336500.3714@schroedinger.engr.sgi.com>
On Tue, 13 Nov 2007 13:38:11 -0800 (PST)
Christoph Lameter <clameter@sgi.com> wrote:
> Well that is currently not done for !SPARSEMEM configuration where
> SECTIONS_WIDTH is also zero. So I left it as is.
>
> > page_to_section is used in page_to_nid() if NODE_NOT_IN_PAGE_FLAGS=y.
> > (I'm not sure exact config dependency.)
>
> NODE_NOT_IN_PAGE_FLAGS=y only occurs when flag bits are
> taken away by sparsemem for the section bits.
>
>
Ahh, thank you for confirmation.
Regards,
-Kame
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prev parent reply other threads:[~2007-11-14 0:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-13 3:47 Christoph Lameter
2007-11-13 4:46 ` KAMEZAWA Hiroyuki
2007-11-13 21:38 ` Christoph Lameter
2007-11-14 0:19 ` KAMEZAWA Hiroyuki [this message]
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