Subject: Re: vnode locking procedure change to suport stacked fs's.
To: Bill Studenmund <email@example.com>
From: Bill Sommerfeld <firstname.lastname@example.org>
Date: 05/24/1999 20:35:05
This is a good change.
However, I don't think it will be sufficient to cure many of the
unionfs locking problems. Fixing unionfs likely requires use of
reader-writer locks, at least on directories. (reader-writer locks
will also improve MP scalability..).
I also think that doing it right will require changing the lockmgr to
support true read-intend-write locks...).
(I'm interested in working on this for 1.5...)