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Re: [PATCH *] rmap VM, version 12

To: Rik van Riel <riel@conectiva.com.br>
Subject: Re: [PATCH *] rmap VM, version 12
From: Robert Love <rml@tech9.net>
Date: 23 Jan 2002 14:15:04 -0500
Cc: "David S. Miller" <davem@redhat.com>, linux-mm@kvack.org,linux-kernel@vger.kernel.org
Fake-Sender: owner-linux-mm@kvack.org
In-Reply-To: <Pine.LNX.4.33L.0201231650450.32617-100000@imladris.surriel.com>
Original-Recipient: rfc822;linux-mm-archive@humbolt.geo.uu.nl
References: <Pine.LNX.4.33L.0201231650450.32617-100000@imladris.surriel.com>
Sender: Rik van Riel <riel@nl.linux.org>

On Wed, 2002-01-23 at 13:57, Rik van Riel wrote:

> Actually, this is just using the pte_free_fast() and
> {get,free}_pgd_fast() functions on non-pae machines.
> 
> I think this should be safe, unless there is a way
> we could pagefault from inside interrupts (but I don't
> think we do that).
> 
> OTOH, the -preempt people will want to add preemption
> protection from the fiddling with the local pte freelist ;)

If you are using the stock mechanisms in include/asm/pgalloc.h they are
already made preempt-safe by the patch. ;)

	Robert Love

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References:
- Re: [PATCH *] rmap VM, version 12
  - From: Rik van Riel <riel@conectiva.com.br>

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