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authorTrond Myklebust <Trond.Myklebust@netapp.com>2011-05-31 15:15:34 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-06-15 11:24:27 -0400
commit0b760113a3a155269a3fba93a409c640031dd68f (patch)
tree699dc3e0ebe2df11b0c67045c046deafdb56282d /net/sunrpc
parent9e3bd4e24e94d60d2e0762e919aab6c9a7fc0c5b (diff)
NLM: Don't hang forever on NLM unlock requests
If the NLM daemon is killed on the NFS server, we can currently end up hanging forever on an 'unlock' request, instead of aborting. Basically, if the rpcbind request fails, or the server keeps returning garbage, we really want to quit instead of retrying. Tested-by: Vasily Averin <vvs@sw.ru> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/clnt.c3
-rw-r--r--net/sunrpc/sched.c1
2 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index b84d7395535e..566bcfd067f6 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1175,6 +1175,9 @@ call_bind_status(struct rpc_task *task)
status = -EOPNOTSUPP;
break;
}
+ if (task->tk_rebind_retry == 0)
+ break;
+ task->tk_rebind_retry--;
rpc_delay(task, 3*HZ);
goto retry_timeout;
case -ETIMEDOUT:
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 6b43ee7221d5..a27406b1654f 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -792,6 +792,7 @@ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *ta
/* Initialize retry counters */
task->tk_garb_retry = 2;
task->tk_cred_retry = 2;
+ task->tk_rebind_retry = 2;
task->tk_priority = task_setup_data->priority - RPC_PRIORITY_LOW;
task->tk_owner = current->tgid;