SUNRPC: Fix buggy UDP transmission

xs_sendpages() may return a negative result. We sure as hell don't want to
add that to the 'tk_bytes_sent' tally...

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index e97e4ca..6f32cc5 100644 (file)
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -587,13 +587,13 @@ static int xs_udp_send_request(struct rpc_task *task)
        dprintk("RPC:       xs_udp_send_request(%u) = %d\n",
                        xdr->len - req->rq_bytes_sent, status);
 
-       task->tk_bytes_sent += status;
-       if (likely(status >= (int) req->rq_slen))
-               return 0;
-
-       /* Still some bytes left; set up for a retry later. */
-       if (status > 0)
+       if (status >= 0) {
+               task->tk_bytes_sent += status;
+               if (status >= req->rq_slen)
+                       return 0;
+               /* Still some bytes left; set up for a retry later. */
                status = -EAGAIN;
+       }
 
        switch (status) {
        case -ENETUNREACH: