Subject: Re: [PATCH 7/8] 8xx: Restore _PAGE_WRITETHRU

From: Benjamin Herrenschmidt <[email-masked]>
Date: Mon, 12 Oct 2009 09:45:30 +1100

On Mon, 2009-10-12 at 00:21 +0200, Joakim Tjernlund wrote:
> > I think I've replaced _PAGE_EXEC with _PAGE_SPECIAL already
> > upstream since _PAGE_EXEC is unused on 8xx.
> 
> What is page SPECIAL anyway? 

It's used on newer kernels to indicates PTEs that map something that
isn't backed by a struct page (ie, not memory)

Cheers,
Ben.