Subject: Re: kern/21107: genfs_putpages modifies page tables without proper locking
To: Brian Buhrow <firstname.lastname@example.org>
From: Manuel Bouyer <email@example.com>
Date: 04/16/2003 09:58:32
On Tue, Apr 15, 2003 at 11:08:34PM -0700, Brian Buhrow wrote:
> Hello Manuel. No, I'm not using any of those options. I'm not sure
> why the patch works either. Could it be that the compiler changes the
> alignment of something, even if the definition is null?
No it should not. It's a #define, so the compiler itself won't see anything.
You can probably confirm this with cc -s
Maybe something else changed in your kernel ?
> It seems like a good idea to incorporate the fix, though so that when
> we do use lockdebug or multiprocessor, things work. :)
If I understood properly, this change should not be needed even for
multiprocessor (pmap_clear_modify() doesn't need to have the page queue
Manuel Bouyer, LIP6, Universite Paris VI. Manuel.Bouyer@lip6.fr
NetBSD: 24 ans d'experience feront toujours la difference