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nfsd: probe the back channel on new connections 

Initiate a CB probe when a new connection with the correct direction is added
to a session (IFF backchannel is marked as down).  Without this a
BIND_CONN_TO_SESSION has no effect on the internal backchannel state, which
causes the server to reply to every SEQUENCE op with the
SEQ4_STATUS_CB_PATH_DOWN flag set until DESTROY_SESSION.

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Weston Andros Adamson 2012-05-24 15:42:17 -04:00 committed by J. Bruce Fields
parent 9023a4093d
commit 2411967305
1 changed files with 5 additions and 0 deletions
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5
fs/nfsd/nfs4state.c
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@ -862,6 +862,11 @@ static __be32 nfsd4_new_conn(struct svc_rqst *rqstp, struct nfsd4_session *ses,
if (ret)
/* oops; xprt is already down: */
nfsd4_conn_lost(&conn->cn_xpt_user);
if (ses->se_client->cl_cb_state == NFSD4_CB_DOWN &&
dir & NFS4_CDFC4_BACK) {
/* callback channel may be back up */
nfsd4_probe_callback(ses->se_client);
}
return nfs_ok;
}