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	Mon, 13 Oct 1997 13:28:47 +0200 (CEST)
To: Doug Rabson <dfr@nlsystems.com>
cc: Karl Denninger <karl@mcs.net>, Robin Cutshaw <robin@intercore.com>,
        freebsd-current@freebsd.org
Subject: Re: NFS cache problem in 3.0 SNAP 
In-reply-to: Your message of "Mon, 13 Oct 1997 11:09:28 BST."
             <Pine.BSF.3.95q.971013110610.958A-100000@herring.nlsystems.com> 
Date: Mon, 13 Oct 1997 13:28:47 +0200
Message-ID: <26109.876742127@critter.freebsd.dk>
From: Poul-Henning Kamp <phk@critter.freebsd.dk>
Sender: owner-freebsd-current@freebsd.org
X-Loop: FreeBSD.org
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>> I'm wondering if we need a call from the nfs code to the namecache
>> when the nfs code decides that a directory has been changed.  Anybody
>> know where we can detect that situation ?
>
>The nfs client calls nfs_invaldir when it detects a directory chance I
>think.

OK, try to apply this change then:

in kern/vfs_cache.c:

	remove static from cache_zap()

	Add this function:

		void
		cache_dir_purge(vp)
			struct vnode *vp;
		{

		while (!LIST_EMPTY(&vp->v_cache_src)) 
			cache_zap(LIST_FIRST(&vp->v_cache_src));
		}

in nfs/nfs_subs.c:

	And add this call to nfs_invaldir() somewhere:

		cache_dir_purge(vp);

And tell me if this improves things...

--
Poul-Henning Kamp             FreeBSD coreteam member
phk@FreeBSD.ORG               "Real hackers run -current on their laptop."