3  * Landlock LSM - Object management
18 #include "object.h"
39  * The caller must own the object (i.e. thanks to object->usage) to safely put
42 void landlock_put_object(struct landlock_object *const object)  in landlock_put_object()  argument
45 	 * The call to @object->underops->release(object) might sleep, e.g.  in landlock_put_object()
49 	if (!object)  in landlock_put_object()
53 	 * If the @object's refcount cannot drop to zero, we can just decrement  in landlock_put_object()
55 	 * happen under @object->lock for synchronization with things like  in landlock_put_object()
58 	if (refcount_dec_and_lock(&object->usage, &object->lock)) {  in landlock_put_object()
59 		__acquire(&object->lock);  in landlock_put_object()
61 		 * With @object->lock initially held, remove the reference from  in landlock_put_object()
62 		 * @object->underobj to @object (if it still exists).  in landlock_put_object()
64 		object->underops->release(object);  in landlock_put_object()
65 		kfree_rcu(object, rcu_free);  in landlock_put_object()