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Date: Thu, 19 Mar 2009 12:13:39 +0100
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Message-ID: <20090319111339.GA38075@onelab2.iet.unipi.it>
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Cc: fabio@gandalf.sssup.it, geom@FreeBSD.org, phk@FreeBSD.org, arch@FreeBSD.org,
	ivan@FreeBSD.org
Subject: Re: RFC: adding 'proxy' nodes to provider ports (with patch)
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On Thu, Mar 19, 2009 at 10:45:05AM +0100, Pawel Jakub Dawidek wrote:
> > Hi,
> > 
> > Fabio Checconi and I have been thinking on how to implement "proxy"
> > geom nodes, i.e. nodes that have exactly 1 provider and 1 consumer
> > port, do not do any data transformation, and can be transparently
> > inserted or removed on top of a provider port while the tree is
> > actively moving data.
...


> > Overall the change is very small (see attached patch):
> > a couple of lines in g_io_request, two extra fields in the g_provider,
> > and the addition of a flag to gp->flags to control the generation
> > of g_new_provider_event.

It seems that the attachment was removed so here it is

http://info.iet.unipi.it/~luigi/FreeBSD/20090319-geom-proxy.patch

	cheers
	luigi