From: Arjan van de Ven <arjan@infradead.org>
To: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Nick Piggin <npiggin@suse.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: [rfc] split_page function to split higher order pages?
Date: Mon, 23 Jan 2006 09:54:05 +0100 [thread overview]
Message-ID: <1138006445.2977.24.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <20060123084715.GA9241@osiris.boeblingen.de.ibm.com>
On Mon, 2006-01-23 at 09:47 +0100, Heiko Carstens wrote:
> > > > Just wondering what people think of the idea of using a helper
> > > > function to split higher order pages instead of doing it manually?
> > >
> > > Maybe it's worth documenting that this is for kernel (or even
> > > architecture) internal use only and that drivers really shouldn't be
> > > doing this..
> >
> > I guess it doesn't seem like something drivers would need to use
> > (and none appear to do anything like it).
>
> And I thought this could/should be used together with vm_insert_page() that
> drivers are supposed to use nowadays instead of remap_pfn_range().
> Why shouldn't drivers use this?
because in that case the drivers shouldn't allocate higher order pages
in the first place...
next prev parent reply other threads:[~2006-01-23 8:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-21 12:40 [rfc] split_page function to split higher order pages? Nick Piggin
2006-01-21 14:17 ` Arjan van de Ven
2006-01-23 5:49 ` Nick Piggin
2006-01-23 8:47 ` Heiko Carstens
2006-01-23 8:54 ` Arjan van de Ven [this message]
2006-01-23 9:20 ` Nick Piggin
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