54 struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,  in sunrpc_cache_lookup()  argument
60 	head = &detail->hash_table[hash];  in sunrpc_cache_lookup()
62 	read_lock(&detail->hash_lock);  in sunrpc_cache_lookup()
66 		if (detail->match(tmp, key)) {  in sunrpc_cache_lookup()
67 			if (cache_is_expired(detail, tmp))  in sunrpc_cache_lookup()
71 			read_unlock(&detail->hash_lock);  in sunrpc_cache_lookup()
75 	read_unlock(&detail->hash_lock);  in sunrpc_cache_lookup()
78 	new = detail->alloc();  in sunrpc_cache_lookup()
86 	detail->init(new, key);  in sunrpc_cache_lookup()
88 	write_lock(&detail->hash_lock);  in sunrpc_cache_lookup()
93 		if (detail->match(tmp, key)) {  in sunrpc_cache_lookup()
94 			if (cache_is_expired(detail, tmp)) {  in sunrpc_cache_lookup()
97 				detail->entries --;  in sunrpc_cache_lookup()
102 			write_unlock(&detail->hash_lock);  in sunrpc_cache_lookup()
103 			cache_put(new, detail);  in sunrpc_cache_lookup()
109 	detail->entries++;  in sunrpc_cache_lookup()
111 	write_unlock(&detail->hash_lock);  in sunrpc_cache_lookup()
114 		cache_put(freeme, detail);  in sunrpc_cache_lookup()
120 static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch);
131 				 struct cache_detail *detail)  in cache_fresh_unlocked()  argument
135 		cache_dequeue(detail, head);  in cache_fresh_unlocked()
139 struct cache_head *sunrpc_cache_update(struct cache_detail *detail,  in sunrpc_cache_update()  argument
150 		write_lock(&detail->hash_lock);  in sunrpc_cache_update()
155 				detail->update(old, new);  in sunrpc_cache_update()
157 			write_unlock(&detail->hash_lock);  in sunrpc_cache_update()
158 			cache_fresh_unlocked(old, detail);  in sunrpc_cache_update()
161 		write_unlock(&detail->hash_lock);  in sunrpc_cache_update()
164 	tmp = detail->alloc();  in sunrpc_cache_update()
166 		cache_put(old, detail);  in sunrpc_cache_update()
170 	detail->init(tmp, old);  in sunrpc_cache_update()
171 	head = &detail->hash_table[hash];  in sunrpc_cache_update()
173 	write_lock(&detail->hash_lock);  in sunrpc_cache_update()
177 		detail->update(tmp, new);  in sunrpc_cache_update()
180 	detail->entries++;  in sunrpc_cache_update()
184 	write_unlock(&detail->hash_lock);  in sunrpc_cache_update()
185 	cache_fresh_unlocked(tmp, detail);  in sunrpc_cache_update()
186 	cache_fresh_unlocked(old, detail);  in sunrpc_cache_update()
187 	cache_put(old, detail);  in sunrpc_cache_update()
220 static int try_to_negate_entry(struct cache_detail *detail, struct cache_head *h)  in try_to_negate_entry()  argument
224 	write_lock(&detail->hash_lock);  in try_to_negate_entry()
231 	write_unlock(&detail->hash_lock);  in try_to_negate_entry()
232 	cache_fresh_unlocked(h, detail);  in try_to_negate_entry()
250 int cache_check(struct cache_detail *detail,  in cache_check()  argument
271 			switch (cache_make_upcall(detail, h)) {  in cache_check()
273 				rv = try_to_negate_entry(detail, h);  in cache_check()
276 				cache_fresh_unlocked(h, detail);  in cache_check()
294 		cache_put(h, detail);  in cache_check()
493 void cache_purge(struct cache_detail *detail)  in cache_purge()  argument
495 	detail->flush_time = LONG_MAX;  in cache_purge()
496 	detail->nextcheck = seconds_since_boot();  in cache_purge()
498 	detail->flush_time = 1;  in cache_purge()
744 static int cache_request(struct cache_detail *detail,  in cache_request()  argument
750 	detail->cache_request(detail, crq->item, &bp, &len);  in cache_request()
1028 static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch)  in cache_dequeue()  argument
1036 	list_for_each_entry_safe(cq, tmp, &detail->queue, list)  in cache_dequeue()
1052 		cache_put(cr->item, detail);  in cache_dequeue()
1117 static void warn_no_listener(struct cache_detail *detail)  in warn_no_listener()  argument
1119 	if (detail->last_warn != detail->last_close) {  in warn_no_listener()
1120 		detail->last_warn = detail->last_close;  in warn_no_listener()
1121 		if (detail->warn_no_listener)  in warn_no_listener()
1122 			detail->warn_no_listener(detail, detail->last_close != 0);  in warn_no_listener()
1126 static bool cache_listeners_exist(struct cache_detail *detail)  in cache_listeners_exist()  argument
1128 	if (atomic_read(&detail->readers))  in cache_listeners_exist()
1130 	if (detail->last_close == 0)  in cache_listeners_exist()
1133 	if (detail->last_close < seconds_since_boot() - 30)  in cache_listeners_exist()
1149 int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)  in sunrpc_cache_pipe_upcall()  argument
1156 	if (!detail->cache_request)  in sunrpc_cache_pipe_upcall()
1159 	if (!cache_listeners_exist(detail)) {  in sunrpc_cache_pipe_upcall()
1160 		warn_no_listener(detail);  in sunrpc_cache_pipe_upcall()
1184 		list_add_tail(&crq->q.list, &detail->queue);  in sunrpc_cache_pipe_upcall()