From owner-freebsd-alpha  Sun Nov 10 19:30:46 2002
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Date: Sun, 10 Nov 2002 19:30:42 -0800 (PST)
From: Matthew Jacob <mjacob@feral.com>
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To: "Alan L. Cox" <alc@imimic.com>
Cc: alpha@FreeBSD.ORG, John Baldwin <jhb@FreeBSD.ORG>
Subject: Re: on the same note..
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On Sun, 10 Nov 2002, Alan L. Cox wrote:

> Matthew Jacob wrote:
> > 
> > > Matthew Jacob wrote:
> > > >
> > > > Err, well, this *is* in vm object allocation...
> > >
> > > Ah, I see what you're talking about now.  Until the vm object has been
> > > returned by the allocation routine it is not shared data.  The
> > > generation count is used to detect changes in the list of resident pages
> > > by sleeping processes, not to detect that the same storage is being
> > > recycled for a new object.
> > >
> > 
> > Well, if this is the case, the allocator shouldn't be just incrementing
> > it, should it? Shouldn't it always start at zero?
> 
> Basically, yes.  This increment has existed for almost five years.  At
> this point, it only exists by inertia.

DTRT then - at least remove the 'atomic XXX?' comment.



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