Re: [PATCH *] rmap VM, version 12

David S. Miller
2002-01-23T19:08:04Z

From: Rik van Riel <riel@conectiva.com.br>
Date: Wed, 23 Jan 2002 16:57:58 -0200 (BRST)

On Wed, 23 Jan 2002, David S. Miller wrote:

> The problem is that when vmalloc() or whatever kernel mappings change
> you have to update all the quicklist page tables to match.

Actually, this is just using the pte_free_fast() and
{get,free}_pgd_fast() functions on non-pae machines.

Rofl, you can't just do that. The page tables cache caches the kernel
mappings and if you don't update them properly on SMP you die.

I am seeing reports of SMP failing with rmap12 but not previous
patches. You need to revert this I think.