DragonFly BSD
DragonFly kernel List (threaded) for 2005-02
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Re: approach on getting nullfs to work again

From: "Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>
Date: Thu, 10 Feb 2005 01:00:11 +0100

On Thursday, 10. February 2005 00:23, Simon 'corecode' Schubert wrote:
> yep, sure. but i got the feeling that we in fact need fake vnodes, so
> that we are able to reroute the vop calls so that we can shape up fake
> namecache entries, right?

uhm thinking of that: if we fake up vnodes, we can't attach the namecache 
entries to the underlying vnode, because, well, the upper vnode needs the 
namecache entry already...

while it would really be slick to do it without fake vnodes, i can't see 
how it could work. and with fake vnodes we need another link for the 
corresponding namecache entries.


/* in struct namecache: */
struct namecache *nc_shadowgrp;

/* Walk the circly linked group of shadowing namecache entries */
sncp = ncp;
while ((sncp = sncp->nc_shadowgrp) != NULL && sncp != ncp)
 /* invalidate or whatever */


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