5 files changed, 17 insertions, 9 deletions

diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index fd7d4669776e..1f6dc518505c 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -224,7 +224,9 @@ void nlm_release_call(struct nlm_rqst *call)
 
 static void nlmclnt_rpc_release(void *data)
 {
+        lock_kernel();
         nlm_release_call(data);
+        unlock_kernel();
 }
 
 static int nlm_wait_on_grace(wait_queue_head_t *queue)
@@ -710,7 +712,9 @@ static void nlmclnt_unlock_callback(struct rpc_task *task, void *data)
 die:
         return;
  retry_rebind:
+        lock_kernel();
         nlm_rebind_host(req->a_host);
+        unlock_kernel();
  retry_unlock:
         rpc_restart_call(task);
 }
@@ -788,7 +792,9 @@ retry_cancel:
         /* Don't ever retry more than 3 times */
         if (req->a_retries++ >= NLMCLNT_MAX_RETRIES)
                 goto die;
+        lock_kernel();
         nlm_rebind_host(req->a_host);
+        unlock_kernel();
         rpc_restart_call(task);
         rpc_delay(task, 30 * HZ);
 }
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 385437e3387d..2e27176ff42f 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -248,7 +248,9 @@ static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
 
 static void nlm4svc_callback_release(void *data)
 {
+        lock_kernel();
         nlm_release_call(data);
+        unlock_kernel();
 }
 
 static const struct rpc_call_ops nlm4svc_callback_ops = {
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 81aca859bfde..56a08ab9a4cb 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -795,6 +795,7 @@ static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
 
         dprintk("lockd: GRANT_MSG RPC callback\n");
 
+        lock_kernel();
         /* if the block is not on a list at this point then it has
          * been invalidated. Don't try to requeue it.
          *
@@ -804,7 +805,7 @@ static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
          * for nlm_blocked?
          */
         if (list_empty(&block->b_list))
-                return;
+                goto out;
 
         /* Technically, we should down the file semaphore here. Since we
          * move the block towards the head of the queue only, no harm
@@ -818,13 +819,17 @@ static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
         }
         nlmsvc_insert_block(block, timeout);
         svc_wake_up(block->b_daemon);
+out:
+        unlock_kernel();
 }
 
 static void nlmsvc_grant_release(void *data)
 {
         struct nlm_rqst         *call = data;
 
+        lock_kernel();
         nlmsvc_release_block(call->a_block);
+        unlock_kernel();
 }
 
 static const struct rpc_call_ops nlmsvc_grant_ops = {
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 88379cc6e0b1..ce6952b50a75 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -278,7 +278,9 @@ static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
 
 static void nlmsvc_callback_release(void *data)
 {
+        lock_kernel();
         nlm_release_call(data);
+        unlock_kernel();
 }
 
 static const struct rpc_call_ops nlmsvc_callback_ops = {
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 6288af05c20f..385f427bedad 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -576,9 +576,7 @@ EXPORT_SYMBOL_GPL(rpc_delay);
  */
 static void rpc_prepare_task(struct rpc_task *task)
 {
-        lock_kernel();
         task->tk_ops->rpc_call_prepare(task, task->tk_calldata);
-        unlock_kernel();
 }
 
 /*
@@ -588,9 +586,7 @@ void rpc_exit_task(struct rpc_task *task)
 {
         task->tk_action = NULL;
         if (task->tk_ops->rpc_call_done != NULL) {
-                lock_kernel();
                 task->tk_ops->rpc_call_done(task, task->tk_calldata);
-                unlock_kernel();
                 if (task->tk_action != NULL) {
                         WARN_ON(RPC_ASSASSINATED(task));
                         /* Always release the RPC slot and buffer memory */
@@ -602,11 +598,8 @@ EXPORT_SYMBOL_GPL(rpc_exit_task);
 
 void rpc_release_calldata(const struct rpc_call_ops *ops, void *calldata)
 {
-        if (ops->rpc_release != NULL) {
-                lock_kernel();
+        if (ops->rpc_release != NULL)
                 ops->rpc_release(calldata);
-                unlock_kernel();
-        }
 }
 
 /*