nfsd: back channel stuck in SEQ4_STATUS_CB_PATH_DOWN
authorDai Ngo <dai.ngo@oracle.com>
Thu, 16 Sep 2021 18:22:12 +0000 (14:22 -0400)
committerChuck Lever <chuck.lever@oracle.com>
Fri, 17 Sep 2021 14:35:12 +0000 (10:35 -0400)
commit02579b2ff8b0becfb51d85a975908ac4ab15fba8
tree733e8b83a015a8a884239e72128a9c40314531ee
parent89c485c7a3ecbc2ebd568f9c9c2edf3a8cf7485b
nfsd: back channel stuck in SEQ4_STATUS_CB_PATH_DOWN

When the back channel enters SEQ4_STATUS_CB_PATH_DOWN state, the client
recovers by sending BIND_CONN_TO_SESSION but the server fails to recover
the back channel and leaves it as NFSD4_CB_DOWN.

Fix by enhancing nfsd4_bind_conn_to_session to probe the back channel
by calling nfsd4_probe_callback.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
fs/nfsd/nfs4state.c