linux-kernel - [PATCH 3.12 109/122] SUNRPC: Ensure call_connect_status() deals correctly with SOFTCONN tasks

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Message-Id: <94feca620813d8e56911a839d3b60ac42a950b64.1424099974.git.jslaby@suse.cz>
Date:	Tue, 17 Feb 2015 12:34:56 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Steve Dickson <steved@...hat.com>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 109/122] SUNRPC: Ensure call_connect_status() deals correctly with SOFTCONN tasks

From: Steve Dickson <steved@...hat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 1fa3e2eb9db07f30a605c66d1a2fdde4b24e74d5 upstream.

Don't schedule an rpc_delay before checking to see if the task
is a SOFTCONN because the tk_callback from the delay (__rpc_atrun)
clears the task status before the rpc_exit_task can be run.

Signed-off-by: Steve Dickson <steved@...hat.com>
Fixes: 561ec1603171c (SUNRPC: call_connect_status should recheck...)
Link: http://lkml.kernel.org/r/5329CF7C.7090308@RedHat.com
Signed-off-by: Trond Myklebust <trond.myklebust@...marydata.com>
Acked-by: NeilBrown <neilb@...e.de>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 net/sunrpc/clnt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 9aa12c57f6a7..285040c71f38 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1707,10 +1707,10 @@ call_connect_status(struct rpc_task *task)
 	case -ECONNABORTED:
 	case -ENETUNREACH:
 	case -EHOSTUNREACH:
-		/* retry with existing socket, after a delay */
-		rpc_delay(task, 3*HZ);
 		if (RPC_IS_SOFTCONN(task))
 			break;
+		/* retry with existing socket, after a delay */
+		rpc_delay(task, 3*HZ);
 	case -EAGAIN:
 		/* Check for timeouts before looping back to call_bind */
 	case -ETIMEDOUT:
-- 
2.2.2

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