mutex_lock_interruptible_nested
err = mutex_lock_interruptible_nested(&tl->mutex, 0);
err = mutex_lock_interruptible_nested(&tl->mutex,
err = mutex_lock_interruptible_nested(&vma->vm->mutex,
err = mutex_lock_interruptible_nested(&vma->vm->mutex, !wakeref);
err = mutex_lock_interruptible_nested(&vm->mutex, !wakeref);
extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
#define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0)
EXPORT_SYMBOL_GPL(mutex_lock_interruptible_nested);
EXPORT_SYMBOL_GPL(mutex_lock_interruptible_nested);