fix refcounting of nsproxy object when unshared

[linux-drm-fsl-dcu.git] / kernel / mutex.c

diff --git a/kernel/mutex.c b/kernel/mutex.c
index 8c71cf72a497de63ec5672f3f5f8f728fbb9f9df..303eab18484b1c63b7a678bf2b24a928cfc847fa 100644 (file)
--- a/kernel/mutex.c
+++ b/kernel/mutex.c
@@ -133,7 +133,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass)
 
        debug_mutex_lock_common(lock, &waiter);
        mutex_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
-       debug_mutex_add_waiter(lock, &waiter, task->thread_info);
+       debug_mutex_add_waiter(lock, &waiter, task_thread_info(task));
 
        /* add waiting tasks to the end of the waitqueue (FIFO): */
        list_add_tail(&waiter.list, &lock->wait_list);
@@ -159,7 +159,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass)
                 */
                if (unlikely(state == TASK_INTERRUPTIBLE &&
                                                signal_pending(task))) {
-                       mutex_remove_waiter(lock, &waiter, task->thread_info);
+                       mutex_remove_waiter(lock, &waiter, task_thread_info(task));
                        mutex_release(&lock->dep_map, 1, _RET_IP_);
                        spin_unlock_mutex(&lock->wait_lock, flags);
 
@@ -175,8 +175,8 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass)
        }
 
        /* got the lock - rejoice! */
-       mutex_remove_waiter(lock, &waiter, task->thread_info);
-       debug_mutex_set_owner(lock, task->thread_info);
+       mutex_remove_waiter(lock, &waiter, task_thread_info(task));
+       debug_mutex_set_owner(lock, task_thread_info(task));
 
        /* set it to 0 if there are no waiters left: */
        if (likely(list_empty(&lock->wait_list)))
@@ -206,6 +206,15 @@ mutex_lock_nested(struct mutex *lock, unsigned int subclass)
 }
 
 EXPORT_SYMBOL_GPL(mutex_lock_nested);
+
+int __sched
+mutex_lock_interruptible_nested(struct mutex *lock, unsigned int subclass)
+{
+       might_sleep();
+       return __mutex_lock_common(lock, TASK_INTERRUPTIBLE, subclass);
+}
+
+EXPORT_SYMBOL_GPL(mutex_lock_interruptible_nested);
 #endif
 
 /*