nfsd4: use generic callback code in null case
This will eventually allow us, for example, to kick off null callback
from contexts where we can't sleep.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 6e59214..19732d5 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -223,6 +223,7 @@
struct nfs4_cb_conn cl_cb_conn;
struct rpc_clnt *cl_cb_client;
atomic_t cl_cb_set;
+ struct nfsd4_callback cl_cb_null;
/* for nfs41 */
struct list_head cl_sessions;