nfsd: pass net to nfsd_set_nrthreads()

Precursor patch. Hard-coded "init_net" will be replaced by proper one in
future.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index f199b53..b144658 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -382,12 +382,11 @@
 	return 0;
 }
 
-int nfsd_set_nrthreads(int n, int *nthreads)
+int nfsd_set_nrthreads(int n, int *nthreads, struct net *net)
 {
 	int i = 0;
 	int tot = 0;
 	int err = 0;
-	struct net *net = &init_net;
 
 	WARN_ON(!mutex_is_locked(&nfsd_mutex));