64 struct cache_detail {  struct
73 	int			(*cache_upcall)(struct cache_detail *,  argument
76 	void			(*cache_request)(struct cache_detail *cd,  argument
80 	int			(*cache_parse)(struct cache_detail *,  argument
84 					      struct cache_detail *cd,  argument
86 	void			(*warn_no_listener)(struct cache_detail *cd,  argument
89 	struct cache_head *	(*alloc)(void);
90 	void			(*flush)(void);
91 	int			(*match)(struct cache_head *orig, struct cache_head *new);
92 	void			(*init)(struct cache_head *orig, struct cache_head *new);
93 	void			(*update)(struct cache_head *orig, struct cache_head *new);
98 	time_t			flush_time;		/* flush all cache items with
104 	struct list_head	others;
105 	time_t			nextcheck;
106 	int			entries;
109 	struct list_head	queue;
111 	atomic_t		writers;		/* how many time is /channel open */
112 	time_t			last_close;		/* if no writers, when did last close */
113 	time_t			last_warn;		/* when we last warned about no writers */
115 	union {
119 	struct net		*net;