97 	struct svc_cacherep	*rp;  in nfsd_reply_cache_alloc()  local
99 	rp = kmem_cache_alloc(drc_slab, GFP_KERNEL);  in nfsd_reply_cache_alloc()
100 	if (rp) {  in nfsd_reply_cache_alloc()
101 		rp->c_state = RC_UNUSED;  in nfsd_reply_cache_alloc()
102 		rp->c_type = RC_NOCACHE;  in nfsd_reply_cache_alloc()
103 		RB_CLEAR_NODE(&rp->c_node);  in nfsd_reply_cache_alloc()
104 		INIT_LIST_HEAD(&rp->c_lru);  in nfsd_reply_cache_alloc()
106 		memset(&rp->c_key, 0, sizeof(rp->c_key));  in nfsd_reply_cache_alloc()
107 		rp->c_key.k_xid = rqstp->rq_xid;  in nfsd_reply_cache_alloc()
108 		rp->c_key.k_proc = rqstp->rq_proc;  in nfsd_reply_cache_alloc()
109 		rpc_copy_addr((struct sockaddr *)&rp->c_key.k_addr, svc_addr(rqstp));  in nfsd_reply_cache_alloc()
110 		rpc_set_port((struct sockaddr *)&rp->c_key.k_addr, rpc_get_port(svc_addr(rqstp)));  in nfsd_reply_cache_alloc()
111 		rp->c_key.k_prot = rqstp->rq_prot;  in nfsd_reply_cache_alloc()
112 		rp->c_key.k_vers = rqstp->rq_vers;  in nfsd_reply_cache_alloc()
113 		rp->c_key.k_len = rqstp->rq_arg.len;  in nfsd_reply_cache_alloc()
114 		rp->c_key.k_csum = csum;  in nfsd_reply_cache_alloc()
116 	return rp;  in nfsd_reply_cache_alloc()
120 nfsd_reply_cache_free_locked(struct nfsd_drc_bucket *b, struct svc_cacherep *rp,  in nfsd_reply_cache_free_locked()  argument
123 	if (rp->c_type == RC_REPLBUFF && rp->c_replvec.iov_base) {  in nfsd_reply_cache_free_locked()
124 		nfsd_stats_drc_mem_usage_sub(nn, rp->c_replvec.iov_len);  in nfsd_reply_cache_free_locked()
125 		kfree(rp->c_replvec.iov_base);  in nfsd_reply_cache_free_locked()
127 	if (rp->c_state != RC_UNUSED) {  in nfsd_reply_cache_free_locked()
128 		rb_erase(&rp->c_node, &b->rb_head);  in nfsd_reply_cache_free_locked()
129 		list_del(&rp->c_lru);  in nfsd_reply_cache_free_locked()
131 		nfsd_stats_drc_mem_usage_sub(nn, sizeof(*rp));  in nfsd_reply_cache_free_locked()
133 	kmem_cache_free(drc_slab, rp);  in nfsd_reply_cache_free_locked()
137 nfsd_reply_cache_free(struct nfsd_drc_bucket *b, struct svc_cacherep *rp,  in nfsd_reply_cache_free()  argument
141 	nfsd_reply_cache_free_locked(b, rp, nn);  in nfsd_reply_cache_free()
212 	struct svc_cacherep	*rp;  in nfsd_reply_cache_shutdown()  local
220 			rp = list_first_entry(head, struct svc_cacherep, c_lru);  in nfsd_reply_cache_shutdown()
222 									rp, nn);  in nfsd_reply_cache_shutdown()
238 lru_put_end(struct nfsd_drc_bucket *b, struct svc_cacherep *rp)  in lru_put_end()  argument
240 	rp->c_timestamp = jiffies;  in lru_put_end()
241 	list_move_tail(&rp->c_lru, &b->lru_head);  in lru_put_end()
247 	struct svc_cacherep *rp, *tmp;  in prune_bucket()  local
250 	list_for_each_entry_safe(rp, tmp, &b->lru_head, c_lru) {  in prune_bucket()
255 		if (rp->c_state == RC_INPROG)  in prune_bucket()
258 		    time_before(jiffies, rp->c_timestamp + RC_EXPIRE))  in prune_bucket()
260 		nfsd_reply_cache_free_locked(b, rp, nn);  in prune_bucket()
340 			const struct svc_cacherep *rp, struct nfsd_net *nn)  in nfsd_cache_key_cmp()  argument
342 	if (key->c_key.k_xid == rp->c_key.k_xid &&  in nfsd_cache_key_cmp()
343 	    key->c_key.k_csum != rp->c_key.k_csum) {  in nfsd_cache_key_cmp()
345 		trace_nfsd_drc_mismatch(nn, key, rp);  in nfsd_cache_key_cmp()
348 	return memcmp(&key->c_key, &rp->c_key, sizeof(key->c_key));  in nfsd_cache_key_cmp()
360 	struct svc_cacherep	*rp, *ret = key;  in nfsd_cache_insert()  local
369 		rp = rb_entry(parent, struct svc_cacherep, c_node);  in nfsd_cache_insert()
371 		cmp = nfsd_cache_key_cmp(key, rp, nn);  in nfsd_cache_insert()
377 			ret = rp;  in nfsd_cache_insert()
417 	struct svc_cacherep	*rp, *found;  in nfsd_cache_lookup()  local
437 	rp = nfsd_reply_cache_alloc(rqstp, csum, nn);  in nfsd_cache_lookup()
438 	if (!rp)  in nfsd_cache_lookup()
442 	found = nfsd_cache_insert(b, rp, nn);  in nfsd_cache_lookup()
443 	if (found != rp) {  in nfsd_cache_lookup()
444 		nfsd_reply_cache_free_locked(NULL, rp, nn);  in nfsd_cache_lookup()
445 		rp = found;  in nfsd_cache_lookup()
450 	rqstp->rq_cacherep = rp;  in nfsd_cache_lookup()
451 	rp->c_state = RC_INPROG;  in nfsd_cache_lookup()
454 	nfsd_stats_drc_mem_usage_add(nn, sizeof(*rp));  in nfsd_cache_lookup()
470 	if (rp->c_state == RC_INPROG)  in nfsd_cache_lookup()
476 	if (!test_bit(RQ_SECURE, &rqstp->rq_flags) && rp->c_secure)  in nfsd_cache_lookup()
480 	switch (rp->c_type) {  in nfsd_cache_lookup()
484 		svc_putu32(&rqstp->rq_res.head[0], rp->c_replstat);  in nfsd_cache_lookup()
488 		if (!nfsd_cache_append(rqstp, &rp->c_replvec))  in nfsd_cache_lookup()
493 		WARN_ONCE(1, "nfsd: bad repcache type %d\n", rp->c_type);  in nfsd_cache_lookup()
524 	struct svc_cacherep *rp = rqstp->rq_cacherep;  in nfsd_cache_update()  local
531 	if (!rp)  in nfsd_cache_update()
534 	hash = nfsd_cache_hash(rp->c_key.k_xid, nn);  in nfsd_cache_update()
542 		nfsd_reply_cache_free(b, rp, nn);  in nfsd_cache_update()
550 		rp->c_replstat = *statp;  in nfsd_cache_update()
553 		cachv = &rp->c_replvec;  in nfsd_cache_update()
557 			nfsd_reply_cache_free(b, rp, nn);  in nfsd_cache_update()
564 		nfsd_reply_cache_free(b, rp, nn);  in nfsd_cache_update()
569 	lru_put_end(b, rp);  in nfsd_cache_update()
570 	rp->c_secure = test_bit(RQ_SECURE, &rqstp->rq_flags);  in nfsd_cache_update()
571 	rp->c_type = cachetype;  in nfsd_cache_update()
572 	rp->c_state = RC_DONE;  in nfsd_cache_update()