122 	struct nfsd_file *nf = container_of(rcu, struct nfsd_file, nf_rcu);  in nfsd_file_slab_free()  local
124 	put_cred(nf->nf_cred);  in nfsd_file_slab_free()
125 	kmem_cache_free(nfsd_file_slab, nf);  in nfsd_file_slab_free()
213 	struct nfsd_file *nf;  in nfsd_file_alloc()  local
215 	nf = kmem_cache_alloc(nfsd_file_slab, GFP_KERNEL);  in nfsd_file_alloc()
216 	if (unlikely(!nf))  in nfsd_file_alloc()
220 	INIT_LIST_HEAD(&nf->nf_lru);  in nfsd_file_alloc()
221 	INIT_LIST_HEAD(&nf->nf_gc);  in nfsd_file_alloc()
222 	nf->nf_birthtime = ktime_get();  in nfsd_file_alloc()
223 	nf->nf_file = NULL;  in nfsd_file_alloc()
224 	nf->nf_cred = get_current_cred();  in nfsd_file_alloc()
225 	nf->nf_net = net;  in nfsd_file_alloc()
226 	nf->nf_flags = want_gc ?  in nfsd_file_alloc()
229 	nf->nf_inode = inode;  in nfsd_file_alloc()
230 	refcount_set(&nf->nf_ref, 1);  in nfsd_file_alloc()
231 	nf->nf_may = need;  in nfsd_file_alloc()
232 	nf->nf_mark = NULL;  in nfsd_file_alloc()
233 	return nf;  in nfsd_file_alloc()
238  * @nf: nfsd_file to check for writeback errors
244 nfsd_file_check_write_error(struct nfsd_file *nf)  in nfsd_file_check_write_error()  argument
246 	struct file *file = nf->nf_file;  in nfsd_file_check_write_error()
250 		nfsd_reset_write_verifier(net_generic(nf->nf_net, nfsd_net_id));  in nfsd_file_check_write_error()
254 nfsd_file_hash_remove(struct nfsd_file *nf)  in nfsd_file_hash_remove()  argument
256 	trace_nfsd_file_unhash(nf);  in nfsd_file_hash_remove()
257 	rhltable_remove(&nfsd_file_rhltable, &nf->nf_rlist,  in nfsd_file_hash_remove()
262 nfsd_file_unhash(struct nfsd_file *nf)  in nfsd_file_unhash()  argument
264 	if (test_and_clear_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_unhash()
265 		nfsd_file_hash_remove(nf);  in nfsd_file_unhash()
272 nfsd_file_free(struct nfsd_file *nf)  in nfsd_file_free()  argument
274 	s64 age = ktime_to_ms(ktime_sub(ktime_get(), nf->nf_birthtime));  in nfsd_file_free()
276 	trace_nfsd_file_free(nf);  in nfsd_file_free()
281 	nfsd_file_unhash(nf);  in nfsd_file_free()
282 	if (nf->nf_mark)  in nfsd_file_free()
283 		nfsd_file_mark_put(nf->nf_mark);  in nfsd_file_free()
284 	if (nf->nf_file) {  in nfsd_file_free()
285 		nfsd_file_check_write_error(nf);  in nfsd_file_free()
286 		nfsd_filp_close(nf->nf_file);  in nfsd_file_free()
293 	if (WARN_ON_ONCE(!list_empty(&nf->nf_lru)))  in nfsd_file_free()
296 	call_rcu(&nf->nf_rcu, nfsd_file_slab_free);  in nfsd_file_free()
300 nfsd_file_check_writeback(struct nfsd_file *nf)  in nfsd_file_check_writeback()  argument
302 	struct file *file = nf->nf_file;  in nfsd_file_check_writeback()
322 static bool nfsd_file_lru_add(struct nfsd_file *nf)  in nfsd_file_lru_add()  argument
324 	set_bit(NFSD_FILE_REFERENCED, &nf->nf_flags);  in nfsd_file_lru_add()
325 	if (list_lru_add_obj(&nfsd_file_lru, &nf->nf_lru)) {  in nfsd_file_lru_add()
326 		trace_nfsd_file_lru_add(nf);  in nfsd_file_lru_add()
332 static bool nfsd_file_lru_remove(struct nfsd_file *nf)  in nfsd_file_lru_remove()  argument
334 	if (list_lru_del_obj(&nfsd_file_lru, &nf->nf_lru)) {  in nfsd_file_lru_remove()
335 		trace_nfsd_file_lru_del(nf);  in nfsd_file_lru_remove()
342 nfsd_file_get(struct nfsd_file *nf)  in nfsd_file_get()  argument
344 	if (nf && refcount_inc_not_zero(&nf->nf_ref))  in nfsd_file_get()
345 		return nf;  in nfsd_file_get()
351  * @nf: nfsd_file of which to put the reference
358 nfsd_file_put(struct nfsd_file *nf)  in nfsd_file_put()  argument
361 	trace_nfsd_file_put(nf);  in nfsd_file_put()
363 	if (test_bit(NFSD_FILE_GC, &nf->nf_flags) &&  in nfsd_file_put()
364 	    test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_put()
369 		if (refcount_dec_not_one(&nf->nf_ref))  in nfsd_file_put()
373 		if (nfsd_file_lru_add(nf)) {  in nfsd_file_put()
375 			if (test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_put()
385 			if (!nfsd_file_lru_remove(nf))  in nfsd_file_put()
389 	if (refcount_dec_and_test(&nf->nf_ref))  in nfsd_file_put()
390 		nfsd_file_free(nf);  in nfsd_file_put()
395  * @nf: nfsd_file of which to put the references
401 nfsd_file_put_local(struct nfsd_file *nf) __must_hold(rcu)  in nfsd_file_put_local()  argument
403 	struct net *net = nf->nf_net;  in nfsd_file_put_local()
405 	nfsd_file_put(nf);  in nfsd_file_put_local()
411  * @nf: nfsd_file of which to access the backing file.
413  * Return backing file for @nf.
416 nfsd_file_file(struct nfsd_file *nf)  in nfsd_file_file()  argument
418 	return nf->nf_file;  in nfsd_file_file()
424 	struct nfsd_file *nf;  in nfsd_file_dispose_list()  local
427 		nf = list_first_entry(dispose, struct nfsd_file, nf_gc);  in nfsd_file_dispose_list()
428 		list_del_init(&nf->nf_gc);  in nfsd_file_dispose_list()
429 		nfsd_file_free(nf);  in nfsd_file_dispose_list()
444 		struct nfsd_file *nf = list_first_entry(dispose,  in nfsd_file_dispose_list_delayed()  local
446 		struct nfsd_net *nn = net_generic(nf->nf_net, nfsd_net_id);  in nfsd_file_dispose_list_delayed()
450 		list_move_tail(&nf->nf_gc, &l->freeme);  in nfsd_file_dispose_list_delayed()
505 	struct nfsd_file *nf = list_entry(item, struct nfsd_file, nf_lru);  in nfsd_file_lru_cb()  local
508 	WARN_ON_ONCE(!test_bit(NFSD_FILE_GC, &nf->nf_flags));  in nfsd_file_lru_cb()
514 	if (nfsd_file_check_writeback(nf)) {  in nfsd_file_lru_cb()
515 		trace_nfsd_file_gc_writeback(nf);  in nfsd_file_lru_cb()
520 	if (test_and_clear_bit(NFSD_FILE_REFERENCED, &nf->nf_flags)) {  in nfsd_file_lru_cb()
521 		trace_nfsd_file_gc_referenced(nf);  in nfsd_file_lru_cb()
529 	if (!refcount_dec_and_test(&nf->nf_ref)) {  in nfsd_file_lru_cb()
530 		trace_nfsd_file_gc_in_use(nf);  in nfsd_file_lru_cb()
531 		list_lru_isolate(lru, &nf->nf_lru);  in nfsd_file_lru_cb()
536 	nfsd_file_unhash(nf);  in nfsd_file_lru_cb()
537 	list_lru_isolate(lru, &nf->nf_lru);  in nfsd_file_lru_cb()
538 	list_add(&nf->nf_gc, head);  in nfsd_file_lru_cb()
540 	trace_nfsd_file_gc_disposed(nf);  in nfsd_file_lru_cb()
587  * @nf: nfsd_file to attempt to queue
594 nfsd_file_cond_queue(struct nfsd_file *nf, struct list_head *dispose)  in nfsd_file_cond_queue()  argument
600 	if (!nfsd_file_unhash(nf))  in nfsd_file_cond_queue()
604 	if (!nfsd_file_get(nf))  in nfsd_file_cond_queue()
608 	if (nfsd_file_lru_remove(nf))  in nfsd_file_cond_queue()
612 	if (refcount_sub_and_test(decrement, &nf->nf_ref)) {  in nfsd_file_cond_queue()
613 		list_add(&nf->nf_gc, dispose);  in nfsd_file_cond_queue()
614 		trace_nfsd_file_closing(nf);  in nfsd_file_cond_queue()
638 	struct nfsd_file *nf;  in nfsd_file_queue_for_close()  local
643 	rhl_for_each_entry_rcu(nf, tmp, list, nf_rlist) {  in nfsd_file_queue_for_close()
644 		if (!test_bit(NFSD_FILE_GC, &nf->nf_flags))  in nfsd_file_queue_for_close()
646 		nfsd_file_cond_queue(nf, dispose);  in nfsd_file_queue_for_close()
682 	struct nfsd_file *nf;  in nfsd_file_close_inode_sync()  local
689 		nf = list_first_entry(&dispose, struct nfsd_file, nf_gc);  in nfsd_file_close_inode_sync()
690 		list_del_init(&nf->nf_gc);  in nfsd_file_close_inode_sync()
691 		nfsd_file_free(nf);  in nfsd_file_close_inode_sync()
836 	struct nfsd_file *nf;  in __nfsd_file_cache_purge()  local
843 		nf = rhashtable_walk_next(&iter);  in __nfsd_file_cache_purge()
844 		while (!IS_ERR_OR_NULL(nf)) {  in __nfsd_file_cache_purge()
845 			if (!net || nf->nf_net == net)  in __nfsd_file_cache_purge()
846 				nfsd_file_cond_queue(nf, &dispose);  in __nfsd_file_cache_purge()
847 			nf = rhashtable_walk_next(&iter);  in __nfsd_file_cache_purge()
851 	} while (nf == ERR_PTR(-EAGAIN));  in __nfsd_file_cache_purge()
959 	struct nfsd_file *nf;  in nfsd_file_lookup_locked()  local
963 	rhl_for_each_entry_rcu(nf, tmp, list, nf_rlist) {  in nfsd_file_lookup_locked()
964 		if (nf->nf_may != need)  in nfsd_file_lookup_locked()
966 		if (nf->nf_net != net)  in nfsd_file_lookup_locked()
968 		if (!nfsd_match_cred(nf->nf_cred, cred))  in nfsd_file_lookup_locked()
970 		if (test_bit(NFSD_FILE_GC, &nf->nf_flags) != want_gc)  in nfsd_file_lookup_locked()
972 		if (test_bit(NFSD_FILE_HASHED, &nf->nf_flags) == 0)  in nfsd_file_lookup_locked()
975 		if (!nfsd_file_get(nf))  in nfsd_file_lookup_locked()
977 		return nf;  in nfsd_file_lookup_locked()
997 	struct nfsd_file *nf;  in nfsd_file_is_cached()  local
1003 	rhl_for_each_entry_rcu(nf, tmp, list, nf_rlist)  in nfsd_file_is_cached()
1004 		if (test_bit(NFSD_FILE_GC, &nf->nf_flags)) {  in nfsd_file_is_cached()
1023 	struct nfsd_file *new, *nf;  in nfsd_file_do_acquire()  local
1043 	nf = nfsd_file_lookup_locked(net, current_cred(), inode, need, want_gc);  in nfsd_file_do_acquire()
1046 	if (nf) {  in nfsd_file_do_acquire()
1048 		 * If the nf is on the LRU then it holds an extra reference  in nfsd_file_do_acquire()
1052 		if (nfsd_file_lru_remove(nf))  in nfsd_file_do_acquire()
1053 			WARN_ON_ONCE(refcount_dec_and_test(&nf->nf_ref));  in nfsd_file_do_acquire()
1065 	nf = nfsd_file_lookup_locked(net, current_cred(), inode, need, want_gc);  in nfsd_file_do_acquire()
1066 	if (unlikely(nf)) {  in nfsd_file_do_acquire()
1072 	nf = new;  in nfsd_file_do_acquire()
1073 	ret = rhltable_insert(&nfsd_file_rhltable, &nf->nf_rlist,  in nfsd_file_do_acquire()
1085 	wait_on_bit(&nf->nf_flags, NFSD_FILE_PENDING, TASK_UNINTERRUPTIBLE);  in nfsd_file_do_acquire()
1088 	if (!test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_do_acquire()
1089 		trace_nfsd_file_cons_err(rqstp, inode, may_flags, nf);  in nfsd_file_do_acquire()
1094 		nfsd_file_put(nf);  in nfsd_file_do_acquire()
1101 	status = nfserrno(nfsd_open_break_lease(file_inode(nf->nf_file), may_flags));  in nfsd_file_do_acquire()
1103 		nfsd_file_put(nf);  in nfsd_file_do_acquire()
1104 		nf = NULL;  in nfsd_file_do_acquire()
1110 		nfsd_file_check_write_error(nf);  in nfsd_file_do_acquire()
1111 		*pnf = nf;  in nfsd_file_do_acquire()
1113 	trace_nfsd_file_acquire(rqstp, inode, may_flags, nf, status);  in nfsd_file_do_acquire()
1117 	trace_nfsd_file_alloc(nf);  in nfsd_file_do_acquire()
1118 	nf->nf_mark = nfsd_file_mark_find_or_create(inode);  in nfsd_file_do_acquire()
1119 	if (nf->nf_mark) {  in nfsd_file_do_acquire()
1122 			nf->nf_file = file;  in nfsd_file_do_acquire()
1124 			trace_nfsd_file_opened(nf, status);  in nfsd_file_do_acquire()
1127 						 &nf->nf_file);  in nfsd_file_do_acquire()
1130 				nfsd_file_unhash(nf);  in nfsd_file_do_acquire()
1132 						      &nf->nf_flags);  in nfsd_file_do_acquire()
1133 				if (refcount_dec_and_test(&nf->nf_ref))  in nfsd_file_do_acquire()
1134 					nfsd_file_free(nf);  in nfsd_file_do_acquire()
1135 				nf = NULL;  in nfsd_file_do_acquire()
1140 			trace_nfsd_file_open(nf, status);  in nfsd_file_do_acquire()
1149 		nfsd_file_unhash(nf);  in nfsd_file_do_acquire()
1150 	clear_and_wake_up_bit(NFSD_FILE_PENDING, &nf->nf_flags);  in nfsd_file_do_acquire()
1155 	if (refcount_dec_and_test(&nf->nf_ref))  in nfsd_file_do_acquire()
1156 		nfsd_file_free(nf);  in nfsd_file_do_acquire()
1157 	nf = NULL;  in nfsd_file_do_acquire()