nfsd4: set sequence flag when backchannel is down

Implement the SEQ4_STATUS_CB_PATH_DOWN flag.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 919ad25660d6..15bd1cc77de7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1800,8 +1800,12 @@ nfsd4_sequence(struct svc_rqst *rqstp,
 out:
         /* Hold a session reference until done processing the compound. */
         if (cstate->session) {
+                struct nfs4_client *clp = session->se_client;
+
                 nfsd4_get_session(cstate->session);
-                atomic_inc(&session->se_client->cl_refcount);
+                atomic_inc(&clp->cl_refcount);
+                if (clp->cl_cb_state == NFSD4_CB_DOWN)
+                        seq->status_flags |= SEQ4_STATUS_CB_PATH_DOWN;
         }
         kfree(conn);
         spin_unlock(&client_lock);