LU-694 ptlrpc: Job Stats

[fs/lustre-release.git] / lustre / ptlrpc / niobuf.c

diff --git a/lustre/ptlrpc/niobuf.c b/lustre/ptlrpc/niobuf.c
index c94f5e0..c65ae1c 100644 (file)
--- a/lustre/ptlrpc/niobuf.c
+++ b/lustre/ptlrpc/niobuf.c
@@ -476,6 +476,16 @@ int ptlrpc_send_reply(struct ptlrpc_request *req, int flags)
                        req->rq_export->exp_obd->obd_minor);
         }
 
+       /* In order to keep interoprability with the client (< 2.3) which
+        * doesn't have pb_jobid in ptlrpc_body, We have to shrink the
+        * ptlrpc_body in reply buffer to ptlrpc_body_v2, otherwise, the
+        * reply buffer on client will be overflow.
+        *
+        * XXX Remove this whenver we drop the interoprability with such client.
+        */
+       req->rq_replen = lustre_shrink_msg(req->rq_repmsg, 0,
+                                          sizeof(struct ptlrpc_body_v2), 1);
+
         if (req->rq_type != PTL_RPC_MSG_ERR)
                 req->rq_type = PTL_RPC_MSG_REPLY;