43 static void cache_init(struct cache_head *h, struct cache_detail *detail)  in cache_init()  argument
46 	INIT_HLIST_NODE(&h->cache_list);  in cache_init()
47 	h->flags = 0;  in cache_init()
48 	kref_init(&h->ref);  in cache_init()
49 	h->expiry_time = now + CACHE_NEW_EXPIRY;  in cache_init()
53 	h->last_refresh = now;  in cache_init()
182 				struct cache_head *h)  in cache_make_negative()  argument
184 	set_bit(CACHE_NEGATIVE, &h->flags);  in cache_make_negative()
185 	trace_cache_entry_make_negative(detail, h);  in cache_make_negative()
189 			       struct cache_head *h,  in cache_entry_update()  argument
193 		detail->update(h, new);  in cache_entry_update()
194 		trace_cache_entry_update(detail, h);  in cache_entry_update()
196 		cache_make_negative(detail, h);  in cache_entry_update()
244 static inline int cache_is_valid(struct cache_head *h)  in cache_is_valid()  argument
246 	if (!test_bit(CACHE_VALID, &h->flags))  in cache_is_valid()
250 		if (test_bit(CACHE_NEGATIVE, &h->flags))  in cache_is_valid()
265 static int try_to_negate_entry(struct cache_detail *detail, struct cache_head *h)  in try_to_negate_entry()  argument
270 	rv = cache_is_valid(h);  in try_to_negate_entry()
272 		cache_make_negative(detail, h);  in try_to_negate_entry()
273 		cache_fresh_locked(h, seconds_since_boot()+CACHE_NEW_EXPIRY,  in try_to_negate_entry()
278 	cache_fresh_unlocked(h, detail);  in try_to_negate_entry()
297 		    struct cache_head *h, struct cache_req *rqstp)  in cache_check()  argument
303 	rv = cache_is_valid(h);  in cache_check()
306 	refresh_age = (h->expiry_time - h->last_refresh);  in cache_check()
307 	age = seconds_since_boot() - h->last_refresh;  in cache_check()
313 		   (h->expiry_time != 0 && age > refresh_age/2)) {  in cache_check()
316 		switch (detail->cache_upcall(detail, h)) {  in cache_check()
318 			rv = try_to_negate_entry(detail, h);  in cache_check()
321 			cache_fresh_unlocked(h, detail);  in cache_check()
327 		if (!cache_defer_req(rqstp, h)) {  in cache_check()
332 			rv = cache_is_valid(h);  in cache_check()
338 		cache_put(h, detail);  in cache_check()
1189 static int cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)  in cache_pipe_upcall()  argument
1195 	if (test_bit(CACHE_CLEANED, &h->flags))  in cache_pipe_upcall()
1214 	if (test_bit(CACHE_PENDING, &h->flags)) {  in cache_pipe_upcall()
1215 		crq->item = cache_get(h);  in cache_pipe_upcall()
1217 		trace_cache_entry_upcall(detail, h);  in cache_pipe_upcall()
1230 int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)  in sunrpc_cache_pipe_upcall()  argument
1232 	if (test_and_set_bit(CACHE_PENDING, &h->flags))  in sunrpc_cache_pipe_upcall()
1234 	return cache_pipe_upcall(detail, h);  in sunrpc_cache_pipe_upcall()
1239 				     struct cache_head *h)  in sunrpc_cache_pipe_upcall_timeout()  argument
1243 		trace_cache_entry_no_listener(detail, h);  in sunrpc_cache_pipe_upcall_timeout()
1246 	return sunrpc_cache_pipe_upcall(detail, h);  in sunrpc_cache_pipe_upcall_timeout()
1274 			int h, l;  in qword_get()  local
1276 			h = hex_to_bin(bp[0]);  in qword_get()
1277 			if (h < 0)  in qword_get()
1284 			*dest++ = (h << 4) | l;  in qword_get()
1892 void sunrpc_cache_unhash(struct cache_detail *cd, struct cache_head *h)  in sunrpc_cache_unhash()  argument
1895 	if (!hlist_unhashed(&h->cache_list)){  in sunrpc_cache_unhash()
1896 		sunrpc_begin_cache_remove_entry(h, cd);  in sunrpc_cache_unhash()
1898 		sunrpc_end_cache_remove_entry(h, cd);  in sunrpc_cache_unhash()