Date: Wed, 25 Apr 2007 17:02:20 -0400 From: Greg Troxel <gdt@ir.bbn.com> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-fs@freebsd.org Subject: Re: distributed filesystems Message-ID: <rmibqhc182r.fsf@fnord.ir.bbn.com> In-Reply-To: <20070425093131.F37507@fledge.watson.org> (Robert Watson's message of "Wed\, 25 Apr 2007 09\:35\:19 %2B0100 \(BST\)") References: <20070422124731.GA20548@harmless.hu> <rmiy7kjs3o5.fsf@fnord.ir.bbn.com> <462CAE66.3050001@freebsd.org> <rmi1wibrxs2.fsf@fnord.ir.bbn.com> <20070425093131.F37507@fledge.watson.org>
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Good point, and I suspect it isn't that hard. NetBSD is also (finally)
moving to fine-grained locking. I supsect one could either create a
coda lock and always grab that, or to make locks for each data object
(the name cache is probably what's needed - everything else is per-vnode
and the vnode lock protects most vnode changes).
--
Greg Troxel <gdt@ir.bbn.com>
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