From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Sun, 8 Feb 2015 23:35:25 +0000 (-0500)
Subject: SUNRPC: Ensure xs_reset_transport() resets the close connection flags
X-Git-Tag: firefly_0821_release~176^2~2246^2~25
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6cc7e908362a9dfec3c821f77ec98b6758592060;p=firefly-linux-kernel-4.4.55.git

SUNRPC: Ensure xs_reset_transport() resets the close connection flags

Otherwise, we may end up looping.

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

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index ea1882f97912..0fa7ed93dc20 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -803,10 +803,21 @@ static void xs_error_report(struct sock *sk)
 	read_unlock_bh(&sk->sk_callback_lock);
 }
 
+static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt)
+{
+	smp_mb__before_atomic();
+	clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
+	clear_bit(XPRT_CONNECTION_CLOSE, &xprt->state);
+	clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
+	clear_bit(XPRT_CLOSING, &xprt->state);
+	smp_mb__after_atomic();
+}
+
 static void xs_reset_transport(struct sock_xprt *transport)
 {
 	struct socket *sock = transport->sock;
 	struct sock *sk = transport->inet;
+	struct rpc_xprt *xprt = &transport->xprt;
 
 	if (sk == NULL)
 		return;
@@ -819,8 +830,9 @@ static void xs_reset_transport(struct sock_xprt *transport)
 
 	xs_restore_old_callbacks(transport, sk);
 	write_unlock_bh(&sk->sk_callback_lock);
+	xs_sock_reset_connection_flags(xprt);
 
-	trace_rpc_socket_close(&transport->xprt, sock);
+	trace_rpc_socket_close(xprt, sock);
 	sock_release(sock);
 }
 
@@ -845,11 +857,6 @@ static void xs_close(struct rpc_xprt *xprt)
 	xs_reset_transport(transport);
 	xprt->reestablish_timeout = 0;
 
-	smp_mb__before_atomic();
-	clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
-	clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
-	clear_bit(XPRT_CLOSING, &xprt->state);
-	smp_mb__after_atomic();
 	xprt_disconnect_done(xprt);
 }
 
@@ -1455,16 +1462,6 @@ static void xs_tcp_cancel_linger_timeout(struct rpc_xprt *xprt)
 	xprt_clear_connecting(xprt);
 }
 
-static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt)
-{
-	smp_mb__before_atomic();
-	clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
-	clear_bit(XPRT_CONNECTION_CLOSE, &xprt->state);
-	clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
-	clear_bit(XPRT_CLOSING, &xprt->state);
-	smp_mb__after_atomic();
-}
-
 static void xs_sock_mark_closed(struct rpc_xprt *xprt)
 {
 	xs_sock_reset_connection_flags(xprt);