66 struct cache_detail {  struct
75 	int			(*cache_upcall)(struct cache_detail *,  argument
78 	void			(*cache_request)(struct cache_detail *cd,  argument
82 	int			(*cache_parse)(struct cache_detail *,  argument
86 					      struct cache_detail *cd,  argument
88 	void			(*warn_no_listener)(struct cache_detail *cd,  argument
91 	struct cache_head *	(*alloc)(void);
92 	void			(*flush)(void);
93 	int			(*match)(struct cache_head *orig, struct cache_head *new);
94 	void			(*init)(struct cache_head *orig, struct cache_head *new);
95 	void			(*update)(struct cache_head *orig, struct cache_head *new);
100 	time64_t		flush_time;		/* flush all cache items with
106 	struct list_head	others;
107 	time64_t		nextcheck;
108 	int			entries;
111 	struct list_head	queue;
113 	atomic_t		writers;		/* how many time is /channel open */
114 	time64_t		last_close;		/* if no writers, when did last close */
115 	time64_t		last_warn;		/* when we last warned about no writers */
117 	union {
121 	struct net		*net;