SUNRPC: Add a new error code for retry waiting for another binder

Add new error code processing to the kernel's rpcbind client and to
call_bind_status() to distinguish two cases:

Case 1: the remote has replied that the program/version tuple is not
registered (returns -EACCES)

Case 2: another process is already in the middle of binding on this
transport (now returns -EAGAIN)

This change allows more specific retry processing for each of these two
cases.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index a0c9f6905517..9b06a217ab86 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -341,7 +341,7 @@ void rpcb_getport_async(struct rpc_task *task)
         BUG_ON(clnt->cl_parent != clnt);
 
         if (xprt_test_and_set_binding(xprt)) {
-                status = -EACCES;               /* tell caller to check again */
+                status = -EAGAIN;       /* tell caller to check again */
                 dprintk("RPC: %5u %s: waiting for another binder\n",
                         task->tk_pid, __FUNCTION__);
                 goto bailout_nowake;