SUNRPC: Ensure that we handle ENOBUFS errors correctly.

Currently, an ENOBUFS error will result in a fatal error for the RPC
call. Normally, we will just want to wait and then retry.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 2e6ab10734f6..575e63f6c13e 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1746,6 +1746,7 @@ call_bind_status(struct rpc_task *task)
         case -EHOSTDOWN:
         case -EHOSTUNREACH:
         case -ENETUNREACH:
+        case -ENOBUFS:
         case -EPIPE:
                 dprintk("RPC: %5u remote rpcbind unreachable: %d\n",
                                 task->tk_pid, task->tk_status);
@@ -1812,6 +1813,7 @@ call_connect_status(struct rpc_task *task)
         case -ECONNABORTED:
         case -ENETUNREACH:
         case -EHOSTUNREACH:
+        case -ENOBUFS:
                 if (RPC_IS_SOFTCONN(task))
                         break;
                 /* retry with existing socket, after a delay */
@@ -1918,6 +1920,7 @@ call_transmit_status(struct rpc_task *task)
         case -ECONNRESET:
         case -ECONNABORTED:
         case -ENOTCONN:
+        case -ENOBUFS:
         case -EPIPE:
                 rpc_task_force_reencode(task);
         }
@@ -2034,6 +2037,7 @@ call_status(struct rpc_task *task)
         case -ECONNRESET:
         case -ECONNABORTED:
                 rpc_force_rebind(clnt);
+        case -ENOBUFS:
                 rpc_delay(task, 3*HZ);
         case -EPIPE:
         case -ENOTCONN:
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index be8bbd5d65ec..8f8589fedfdd 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -594,6 +594,7 @@ static int xs_local_send_request(struct rpc_task *task)
         }
 
         switch (status) {
+        case -ENOBUFS:
         case -EAGAIN:
                 status = xs_nospace(task);
                 break;
@@ -661,6 +662,7 @@ static int xs_udp_send_request(struct rpc_task *task)
                 dprintk("RPC:       sendmsg returned unrecognized error %d\n",
                         -status);
         case -ENETUNREACH:
+        case -ENOBUFS:
         case -EPIPE:
         case -ECONNREFUSED:
                 /* When the server has died, an ICMP port unreachable message
@@ -758,6 +760,7 @@ static int xs_tcp_send_request(struct rpc_task *task)
                 status = -ENOTCONN;
                 /* Should we call xs_close() here? */
                 break;
+        case -ENOBUFS:
         case -EAGAIN:
                 status = xs_nospace(task);
                 break;
@@ -1946,6 +1949,7 @@ static int xs_local_setup_socket(struct sock_xprt *transport)
                 dprintk("RPC:       xprt %p connected to %s\n",
                                 xprt, xprt->address_strings[RPC_DISPLAY_ADDR]);
                 xprt_set_connected(xprt);
+        case -ENOBUFS:
                 break;
         case -ENOENT:
                 dprintk("RPC:       xprt %p: socket %s does not exist\n",
@@ -2281,6 +2285,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
         case -ECONNREFUSED:
         case -ECONNRESET:
         case -ENETUNREACH:
+        case -ENOBUFS:
                 /* retry with existing socket, after a delay */
                 goto out;
         }