linux-kernel - [PATCH 5.16 0718/1017] SUNRPC dont resend a task on an offlined transport

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Message-Id: <20220405070415.581082002@linuxfoundation.org>
Date:   Tue,  5 Apr 2022 09:27:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Olga Kornievskaia <kolga@...app.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0718/1017] SUNRPC dont resend a task on an offlined transport

From: Olga Kornievskaia <kolga@...app.com>

[ Upstream commit 82ee41b85cef16b4be1f4732650012d9baaedddd ]

When a task is being retried, due to an NFS error, if the assigned
transport has been put offline and the task is relocatable pick a new
transport.

Fixes: 6f081693e7b2b ("sunrpc: remove an offlined xprt using sysfs")
Signed-off-by: Olga Kornievskaia <kolga@...app.com>
Signed-off-by: Trond Myklebust <trond.myklebust@...merspace.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/sunrpc/clnt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 5985b78eddf1..b36d235d2d6d 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1065,7 +1065,9 @@ rpc_task_get_next_xprt(struct rpc_clnt *clnt)
 static
 void rpc_task_set_transport(struct rpc_task *task, struct rpc_clnt *clnt)
 {
-	if (task->tk_xprt)
+	if (task->tk_xprt &&
+			!(test_bit(XPRT_OFFLINE, &task->tk_xprt->state) &&
+                        (task->tk_flags & RPC_TASK_MOVEABLE)))
 		return;
 	if (task->tk_flags & RPC_TASK_NO_ROUND_ROBIN)
 		task->tk_xprt = rpc_task_get_first_xprt(clnt);
-- 
2.34.1