svc: Move close processing to a single place

Close handling was duplicated in the UDP and TCP recvfrom
methods. This code has been moved to the transport independent
svc_recv function.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Neil Brown <neilb@suse.de>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Greg Banks <gnb@sgi.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 2007881..603db98 100644 (file)
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -776,11 +776,6 @@ svc_udp_recvfrom(struct svc_rqst *rqstp)
                return svc_deferred_recv(rqstp);
        }
 
-       if (test_bit(SK_CLOSE, &svsk->sk_flags)) {
-               svc_delete_socket(svsk);
-               return 0;
-       }
-
        clear_bit(SK_DATA, &svsk->sk_flags);
        skb = NULL;
        err = kernel_recvmsg(svsk->sk_sock, &msg, NULL,
@@ -1181,11 +1176,6 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp)
                return svc_deferred_recv(rqstp);
        }
 
-       if (test_bit(SK_CLOSE, &svsk->sk_flags)) {
-               svc_delete_socket(svsk);
-               return 0;
-       }
-
        if (svsk->sk_sk->sk_state == TCP_LISTEN) {
                svc_tcp_accept(svsk);
                svc_sock_received(svsk);
@@ -1311,7 +1301,7 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp)
        return len;
 
  err_delete:
-       svc_delete_socket(svsk);
+       set_bit(SK_CLOSE, &svsk->sk_flags);
        return -EAGAIN;
 
  error:
@@ -1575,10 +1565,16 @@ svc_recv(struct svc_rqst *rqstp, long timeout)
        }
        spin_unlock_bh(&pool->sp_lock);
 
-       dprintk("svc: server %p, pool %u, socket %p, inuse=%d\n",
-                rqstp, pool->sp_id, svsk, atomic_read(&svsk->sk_inuse));
-       len = svsk->sk_xprt.xpt_ops->xpo_recvfrom(rqstp);
-       dprintk("svc: got len=%d\n", len);
+       len = 0;
+       if (test_bit(SK_CLOSE, &svsk->sk_flags)) {
+               dprintk("svc_recv: found SK_CLOSE\n");
+               svc_delete_socket(svsk);
+       } else {
+               dprintk("svc: server %p, pool %u, socket %p, inuse=%d\n",
+                       rqstp, pool->sp_id, svsk, atomic_read(&svsk->sk_inuse));
+               len = svsk->sk_xprt.xpt_ops->xpo_recvfrom(rqstp);
+               dprintk("svc: got len=%d\n", len);
+       }
 
        /* No data, incomplete (TCP) read, or accept() */
        if (len == 0 || len == -EAGAIN) {