struct audit_chunk {
	struct list_head hash;
	unsigned long key;
	struct fsnotify_mark mark;
	struct list_head trees;		/* with root here */
	int dead;
	int count;
	atomic_long_t refs;
	struct rcu_head head;
	struct node {
		struct list_head list;
		struct audit_tree *owner;
		unsigned index;		/* index; upper bit indicates 'will prune' */
	} owners[];
};
