1 files changed, 4 insertions, 1 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b9d395856b3a..11aa4b6b4fa2 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -361,8 +361,11 @@ shutdown_callback_client(struct nfs4_client *clp)
 {
         struct rpc_clnt *clnt = clp->cl_callback.cb_client;
 
-        /* shutdown rpc client, ending any outstanding recall rpcs */
         if (clnt) {
+                /*
+                 * Callback threads take a reference on the client, so there
+                 * should be no outstanding callbacks at this point.
+                 */
                 clp->cl_callback.cb_client = NULL;
                 rpc_shutdown_client(clnt);
         }