From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Wed, 18 Oct 2006 16:01:05 -0400
SUNRPC: Fix up missing BKL in asynchronous RPC callback functions

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

 include/linux/sunrpc/sched.h |    1 +
 net/sunrpc/clnt.c            |    3 +--
 net/sunrpc/sched.c           |   15 +++++++++++----
 3 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 14fc813..b6b6ad6 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -252,6 +252,7 @@ void		rpc_init_task(struct rpc_task *tas
 void		rpc_put_task(struct rpc_task *);
 void		rpc_release_task(struct rpc_task *);
 void		rpc_exit_task(struct rpc_task *);
+void		rpc_release_calldata(const struct rpc_call_ops *, void *);
 void		rpc_killall_tasks(struct rpc_clnt *);
 int		rpc_execute(struct rpc_task *);
 void		rpc_init_priority_wait_queue(struct rpc_wait_queue *, const char *);
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 2f10af7..7916fff 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -542,8 +542,7 @@ rpc_call_async(struct rpc_clnt *clnt, st
 	rpc_restore_sigmask(&oldset);		
 	return status;
 out_release:
-	if (tk_ops->rpc_release != NULL)
-		tk_ops->rpc_release(data);
+	rpc_release_calldata(tk_ops, data);
 	return status;
 }
 
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 6b808c0..9c13050 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -608,6 +608,15 @@ void rpc_exit_task(struct rpc_task *task
 }
 EXPORT_SYMBOL(rpc_exit_task);
 
+void rpc_release_calldata(const struct rpc_call_ops *ops, void *calldata)
+{
+	if (ops->rpc_release != NULL) {
+		lock_kernel();
+		ops->rpc_release(calldata);
+		unlock_kernel();
+	}
+}
+
 /*
  * This is the RPC `scheduler' (or rather, the finite state machine).
  */
@@ -883,8 +892,7 @@ void rpc_put_task(struct rpc_task *task)
 	}
 	if (task->tk_flags & RPC_TASK_DYNAMIC)
 		call_rcu_bh(&task->u.tk_rcu, rpc_free_task);
-	if (tk_ops->rpc_release)
-		tk_ops->rpc_release(calldata);
+	rpc_release_calldata(tk_ops, calldata);
 }
 EXPORT_SYMBOL(rpc_put_task);
 
@@ -928,8 +936,7 @@ struct rpc_task *rpc_run_task(struct rpc
 	struct rpc_task *task;
 	task = rpc_new_task(clnt, flags, ops, data);
 	if (task == NULL) {
-		if (ops->rpc_release != NULL)
-			ops->rpc_release(data);
+		rpc_release_calldata(ops, data);
 		return ERR_PTR(-ENOMEM);
 	}
 	atomic_inc(&task->tk_count);