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>

3 files changed, 8 insertions, 8 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);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 4ff2c9e0b276..956629b9cdc9 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3137,13 +3137,9 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
         WRITE32(seq->seqid);
         WRITE32(seq->slotid);
         WRITE32(seq->maxslots);
-        /*
-         * FIXME: for now:
-         *   target_maxslots = maxslots
-         *   status_flags = 0
-         */
+        /* For now: target_maxslots = maxslots */
         WRITE32(seq->maxslots);
-        WRITE32(0);
+        WRITE32(seq->status_flags);
 
         ADJUST_ARGS();
         resp->cstate.datap = p; /* DRC cache data pointer */
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 3a7aa4d98c1f..366401e1a536 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -378,8 +378,8 @@ struct nfsd4_sequence {
         u32                     cachethis;              /* request */
 #if 0
         u32                     target_maxslots;        /* response */
-        u32                     status_flags;           /* response */
 #endif /* not yet */
+        u32                     status_flags;           /* response */
 };
 
 struct nfsd4_destroy_session {