linux-kernel - Re: exported version of page_is

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Date:	Mon, 5 May 2008 12:50:35 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	"Timur Alperovich" <timur.alperovich@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: exported version of page_is_ram?

On Mon, 5 May 2008 13:58:59 -0400
"Timur Alperovich" <timur.alperovich@...il.com> wrote:

> Hi,
> 
> I need to check if a given page is in ram or not. It seems that
> page_is_ram does the trick, but since it's not exported, I end up with
> "unknown symbol" errors when I try to insert the module. I'm trying to
> hash the contents of every page in physical memory, and iterating
> through pages from 0 to num_physpages, while checking if they are
> actually in ram seemed reasonable. Is there a better way to do it or
> is there another function rather than page_is_ram that can do the
> trick?

sounds like the right way is to make a "for each ram page" function
in the core, export_symbol_gpl that so that you can then use that...
We could even make it scale and numa friendly in the core that way.

Do you have a url for your code?
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