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Diffstat (limited to 'net/sunrpc/xprtsock.c')
-rw-r--r--net/sunrpc/xprtsock.c63
1 files changed, 22 insertions, 41 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 2ffaf6a79499..fde2138b81e7 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -398,7 +398,6 @@ static int xs_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen,
if (unlikely(!sock))
return -ENOTSOCK;
- clear_bit(SOCKWQ_ASYNC_NOSPACE, &sock->flags);
if (base != 0) {
addr = NULL;
addrlen = 0;
@@ -442,7 +441,6 @@ static void xs_nospace_callback(struct rpc_task *task)
struct sock_xprt *transport = container_of(task->tk_rqstp->rq_xprt, struct sock_xprt, xprt);
transport->inet->sk_write_pending--;
- clear_bit(SOCKWQ_ASYNC_NOSPACE, &transport->sock->flags);
}
/**
@@ -467,20 +465,11 @@ static int xs_nospace(struct rpc_task *task)
/* Don't race with disconnect */
if (xprt_connected(xprt)) {
- if (test_bit(SOCKWQ_ASYNC_NOSPACE, &transport->sock->flags)) {
- /*
- * Notify TCP that we're limited by the application
- * window size
- */
- set_bit(SOCK_NOSPACE, &transport->sock->flags);
- sk->sk_write_pending++;
- /* ...and wait for more buffer space */
- xprt_wait_for_buffer_space(task, xs_nospace_callback);
- }
- } else {
- clear_bit(SOCKWQ_ASYNC_NOSPACE, &transport->sock->flags);
+ /* wait for more buffer space */
+ sk->sk_write_pending++;
+ xprt_wait_for_buffer_space(task, xs_nospace_callback);
+ } else
ret = -ENOTCONN;
- }
spin_unlock_bh(&xprt->transport_lock);
@@ -616,9 +605,6 @@ process_status:
case -EAGAIN:
status = xs_nospace(task);
break;
- default:
- dprintk("RPC: sendmsg returned unrecognized error %d\n",
- -status);
case -ENETUNREACH:
case -ENOBUFS:
case -EPIPE:
@@ -626,7 +612,10 @@ process_status:
case -EPERM:
/* When the server has died, an ICMP port unreachable message
* prompts ECONNREFUSED. */
- clear_bit(SOCKWQ_ASYNC_NOSPACE, &transport->sock->flags);
+ break;
+ default:
+ dprintk("RPC: sendmsg returned unrecognized error %d\n",
+ -status);
}
return status;
@@ -706,16 +695,16 @@ static int xs_tcp_send_request(struct rpc_task *task)
case -EAGAIN:
status = xs_nospace(task);
break;
- default:
- dprintk("RPC: sendmsg returned unrecognized error %d\n",
- -status);
case -ECONNRESET:
case -ECONNREFUSED:
case -ENOTCONN:
case -EADDRINUSE:
case -ENOBUFS:
case -EPIPE:
- clear_bit(SOCKWQ_ASYNC_NOSPACE, &transport->sock->flags);
+ break;
+ default:
+ dprintk("RPC: sendmsg returned unrecognized error %d\n",
+ -status);
}
return status;
@@ -1609,19 +1598,23 @@ static void xs_tcp_state_change(struct sock *sk)
static void xs_write_space(struct sock *sk)
{
- struct socket *sock;
+ struct socket_wq *wq;
struct rpc_xprt *xprt;
- if (unlikely(!(sock = sk->sk_socket)))
+ if (!sk->sk_socket)
return;
- clear_bit(SOCK_NOSPACE, &sock->flags);
+ clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
if (unlikely(!(xprt = xprt_from_sock(sk))))
return;
- if (test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &sock->flags) == 0)
- return;
+ rcu_read_lock();
+ wq = rcu_dereference(sk->sk_wq);
+ if (!wq || test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags) == 0)
+ goto out;
xprt_write_space(xprt);
+out:
+ rcu_read_unlock();
}
/**
@@ -1907,18 +1900,6 @@ static inline void xs_reclassify_socket(int family, struct socket *sock)
}
}
#else
-static inline void xs_reclassify_socketu(struct socket *sock)
-{
-}
-
-static inline void xs_reclassify_socket4(struct socket *sock)
-{
-}
-
-static inline void xs_reclassify_socket6(struct socket *sock)
-{
-}
-
static inline void xs_reclassify_socket(int family, struct socket *sock)
{
}
@@ -2008,7 +1989,7 @@ static int xs_local_setup_socket(struct sock_xprt *transport)
"transport socket (%d).\n", -status);
goto out;
}
- xs_reclassify_socketu(sock);
+ xs_reclassify_socket(AF_LOCAL, sock);
dprintk("RPC: worker connecting xprt %p via AF_LOCAL to %s\n",
xprt, xprt->address_strings[RPC_DISPLAY_ADDR]);