65 struct cache_detail {  struct
74 	int			(*cache_upcall)(struct cache_detail *,  argument
77 	void			(*cache_request)(struct cache_detail *cd,  argument
81 	int			(*cache_parse)(struct cache_detail *,  argument
85 					      struct cache_detail *cd,  argument
87 	void			(*warn_no_listener)(struct cache_detail *cd,  argument
90 	struct cache_head *	(*alloc)(void);
91 	void			(*flush)(void);
92 	int			(*match)(struct cache_head *orig, struct cache_head *new);
93 	void			(*init)(struct cache_head *orig, struct cache_head *new);
94 	void			(*update)(struct cache_head *orig, struct cache_head *new);
99 	time64_t		flush_time;		/* flush all cache items with
105 	struct list_head	others;
106 	time64_t		nextcheck;
107 	int			entries;
110 	struct list_head	queue;
112 	atomic_t		writers;		/* how many time is /channel open */
113 	time64_t		last_close;		/* if no writers, when did last close */
114 	time64_t		last_warn;		/* when we last warned about no writers */
116 	union {
120 	struct net		*net;