Subject: Re: pmap_is_referenced() -- not used?
To: Chuck Cranor <chuck@xxx.research.att.com>
From: Jason R Thorpe <thorpej@zembu.com>
List: tech-kern
Date: 01/24/2001 17:41:10
On Wed, Jan 24, 2001 at 08:04:56PM -0500, Chuck Cranor wrote:
> hmmm. this part was supposed to be in the UVM code, but it doesn't
> seem to be there. that's an error, sorry about that!
No sweat -- I added it back, and it seems to have helped interactive
performance a fair bit.
> i think you should be careful about not protecting it. by placing
> a page that has possible active mappings on the inactive queue you are
> violating one of the assumptions that i wrote the rest of the code with
> and it could cause trouble later....
Yah, I'm making a sweep through the code. You just have to be careful
dealing with the PG_CLEAN bit. Looks like the only place that really
needs help is uvm_mk_pcluster(). And it looks like it might not even
be *THAT* bad.
I'll post a patch in a little while.
--
-- Jason R. Thorpe <thorpej@zembu.com>