From: Christoph Hellwig <hch@infradead.org>
To: Jim Paradis <jparadis@redhat.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] Dirty page tracking & on-the-fly memory mirroring
Date: Sat, 1 Aug 2009 11:52:27 -0400 [thread overview]
Message-ID: <20090801155227.GB10888@infradead.org> (raw)
In-Reply-To: <4A7393D9.50807@redhat.com>
On Fri, Jul 31, 2009 at 09:01:13PM -0400, Jim Paradis wrote:
>
> This patch is a reference implementation of a memory-mirroring module
> ("pagesync"). It is the same code that Stratus uses minus some
> hardware-specific bits. This module scans through physical memory,
> clearing the hardware dirty bit of any dirty page and setting the
> software dirty bit. If a dirty page has the *hardware* dirty bit
> set on a subsequent scan, we know that the page has been re-dirtied
> and it is a candidate for being copied again.
As mentioned in the prevois mail example code is uttely useless. Please
post the real code for the stratus hardware, and also make in built-in
instead of opening big holes for external propritary modules.
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next prev parent reply other threads:[~2009-08-01 15:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-01 1:01 Jim Paradis
2009-08-01 15:52 ` Christoph Hellwig [this message]
2009-08-06 23:06 ` Andi Kleen
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