> diff --git a/sys/fs/pseudofs/pseudofs_vncache.c b/sys/fs/pseudofs/pseudofs_vncache.c
> index 3145870..a92a446 100644

That patch seems to be OK.

Looking at the nearby code:

The pseudofs cache somtimes crashed my machine during reboot due to an
accounting irregularity when pfs_vncache_alloc tries to resolve race (e.g.
"panic: -10 vncache entries remaining").  I now use this patch (only decrease
pfs_vncache_entries if entry was in cache):


Index: pseudofs_vncache.c
===================================================================
--- pseudofs_vncache.c	(revision 196724)
+++ pseudofs_vncache.c	(working copy)
@@ -245,11 +245,13 @@
 	KASSERT(pvd != NULL, ("pfs_vncache_free(): no vnode data\n"));
 	if (pvd->pvd_next)
 		pvd->pvd_next->pvd_prev = pvd->pvd_prev;
-	if (pvd->pvd_prev)
+	if (pvd->pvd_prev) {
 		pvd->pvd_prev->pvd_next = pvd->pvd_next;
-	else if (pfs_vncache == pvd)
+		--pfs_vncache_entries;
+	} else if (pfs_vncache == pvd) {
 		pfs_vncache = pvd->pvd_next;
-	--pfs_vncache_entries;
+		--pfs_vncache_entries;
+	}
 	mtx_unlock(&pfs_vncache_mutex);
 
 	free(pvd, M_PFSVNCACHE);


- Tor Egge