123 	struct nfsd_file *nf = container_of(rcu, struct nfsd_file, nf_rcu);  in nfsd_file_slab_free()  local
125 	put_cred(nf->nf_cred);  in nfsd_file_slab_free()
126 	kmem_cache_free(nfsd_file_slab, nf);  in nfsd_file_slab_free()
214 	struct nfsd_file *nf;  in nfsd_file_alloc()  local
216 	nf = kmem_cache_alloc(nfsd_file_slab, GFP_KERNEL);  in nfsd_file_alloc()
217 	if (unlikely(!nf))  in nfsd_file_alloc()
221 	INIT_LIST_HEAD(&nf->nf_lru);  in nfsd_file_alloc()
222 	INIT_LIST_HEAD(&nf->nf_gc);  in nfsd_file_alloc()
223 	nf->nf_birthtime = ktime_get();  in nfsd_file_alloc()
224 	nf->nf_file = NULL;  in nfsd_file_alloc()
225 	nf->nf_cred = get_current_cred();  in nfsd_file_alloc()
226 	nf->nf_net = net;  in nfsd_file_alloc()
227 	nf->nf_flags = want_gc ?  in nfsd_file_alloc()
230 	nf->nf_inode = inode;  in nfsd_file_alloc()
231 	refcount_set(&nf->nf_ref, 1);  in nfsd_file_alloc()
232 	nf->nf_may = need;  in nfsd_file_alloc()
233 	nf->nf_mark = NULL;  in nfsd_file_alloc()
234 	return nf;  in nfsd_file_alloc()
239  * @nf: nfsd_file to check for writeback errors
245 nfsd_file_check_write_error(struct nfsd_file *nf)  in nfsd_file_check_write_error()  argument
247 	struct file *file = nf->nf_file;  in nfsd_file_check_write_error()
251 		nfsd_reset_write_verifier(net_generic(nf->nf_net, nfsd_net_id));  in nfsd_file_check_write_error()
255 nfsd_file_hash_remove(struct nfsd_file *nf)  in nfsd_file_hash_remove()  argument
257 	trace_nfsd_file_unhash(nf);  in nfsd_file_hash_remove()
258 	rhltable_remove(&nfsd_file_rhltable, &nf->nf_rlist,  in nfsd_file_hash_remove()
263 nfsd_file_unhash(struct nfsd_file *nf)  in nfsd_file_unhash()  argument
265 	if (test_and_clear_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_unhash()
266 		nfsd_file_hash_remove(nf);  in nfsd_file_unhash()
273 nfsd_file_free(struct nfsd_file *nf)  in nfsd_file_free()  argument
275 	s64 age = ktime_to_ms(ktime_sub(ktime_get(), nf->nf_birthtime));  in nfsd_file_free()
277 	trace_nfsd_file_free(nf);  in nfsd_file_free()
282 	nfsd_file_unhash(nf);  in nfsd_file_free()
283 	if (nf->nf_mark)  in nfsd_file_free()
284 		nfsd_file_mark_put(nf->nf_mark);  in nfsd_file_free()
285 	if (nf->nf_file) {  in nfsd_file_free()
286 		nfsd_file_check_write_error(nf);  in nfsd_file_free()
287 		nfsd_filp_close(nf->nf_file);  in nfsd_file_free()
294 	if (WARN_ON_ONCE(!list_empty(&nf->nf_lru)))  in nfsd_file_free()
297 	call_rcu(&nf->nf_rcu, nfsd_file_slab_free);  in nfsd_file_free()
301 nfsd_file_check_writeback(struct nfsd_file *nf)  in nfsd_file_check_writeback()  argument
303 	struct file *file = nf->nf_file;  in nfsd_file_check_writeback()
323 static bool nfsd_file_lru_add(struct nfsd_file *nf)  in nfsd_file_lru_add()  argument
325 	set_bit(NFSD_FILE_REFERENCED, &nf->nf_flags);  in nfsd_file_lru_add()
326 	if (list_lru_add_obj(&nfsd_file_lru, &nf->nf_lru)) {  in nfsd_file_lru_add()
327 		trace_nfsd_file_lru_add(nf);  in nfsd_file_lru_add()
333 static bool nfsd_file_lru_remove(struct nfsd_file *nf)  in nfsd_file_lru_remove()  argument
335 	if (list_lru_del_obj(&nfsd_file_lru, &nf->nf_lru)) {  in nfsd_file_lru_remove()
336 		trace_nfsd_file_lru_del(nf);  in nfsd_file_lru_remove()
343 nfsd_file_get(struct nfsd_file *nf)  in nfsd_file_get()  argument
345 	if (nf && refcount_inc_not_zero(&nf->nf_ref))  in nfsd_file_get()
346 		return nf;  in nfsd_file_get()
352  * @nf: nfsd_file of which to put the reference
359 nfsd_file_put(struct nfsd_file *nf)  in nfsd_file_put()  argument
362 	trace_nfsd_file_put(nf);  in nfsd_file_put()
364 	if (test_bit(NFSD_FILE_GC, &nf->nf_flags) &&  in nfsd_file_put()
365 	    test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_put()
370 		if (refcount_dec_not_one(&nf->nf_ref))  in nfsd_file_put()
374 		if (nfsd_file_lru_add(nf)) {  in nfsd_file_put()
376 			if (test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_put()
386 			if (!nfsd_file_lru_remove(nf))  in nfsd_file_put()
390 	if (refcount_dec_and_test(&nf->nf_ref))  in nfsd_file_put()
391 		nfsd_file_free(nf);  in nfsd_file_put()
396  * @nf: nfsd_file of which to put the reference
402 nfsd_file_put_local(struct nfsd_file *nf)  in nfsd_file_put_local()  argument
404 	struct net *net = nf->nf_net;  in nfsd_file_put_local()
406 	nfsd_file_put(nf);  in nfsd_file_put_local()
412  * @nf: nfsd_file of which to access the backing file.
414  * Return backing file for @nf.
417 nfsd_file_file(struct nfsd_file *nf)  in nfsd_file_file()  argument
419 	return nf->nf_file;  in nfsd_file_file()
425 	struct nfsd_file *nf;  in nfsd_file_dispose_list()  local
428 		nf = list_first_entry(dispose, struct nfsd_file, nf_gc);  in nfsd_file_dispose_list()
429 		list_del_init(&nf->nf_gc);  in nfsd_file_dispose_list()
430 		nfsd_file_free(nf);  in nfsd_file_dispose_list()
445 		struct nfsd_file *nf = list_first_entry(dispose,  in nfsd_file_dispose_list_delayed()  local
447 		struct nfsd_net *nn = net_generic(nf->nf_net, nfsd_net_id);  in nfsd_file_dispose_list_delayed()
452 		list_move_tail(&nf->nf_gc, &l->freeme);  in nfsd_file_dispose_list_delayed()
512 	struct nfsd_file *nf = list_entry(item, struct nfsd_file, nf_lru);  in nfsd_file_lru_cb()  local
515 	WARN_ON_ONCE(!test_bit(NFSD_FILE_GC, &nf->nf_flags));  in nfsd_file_lru_cb()
521 	if (nfsd_file_check_writeback(nf)) {  in nfsd_file_lru_cb()
522 		trace_nfsd_file_gc_writeback(nf);  in nfsd_file_lru_cb()
527 	if (test_and_clear_bit(NFSD_FILE_REFERENCED, &nf->nf_flags)) {  in nfsd_file_lru_cb()
528 		trace_nfsd_file_gc_referenced(nf);  in nfsd_file_lru_cb()
536 	if (!refcount_dec_and_test(&nf->nf_ref)) {  in nfsd_file_lru_cb()
537 		trace_nfsd_file_gc_in_use(nf);  in nfsd_file_lru_cb()
538 		list_lru_isolate(lru, &nf->nf_lru);  in nfsd_file_lru_cb()
543 	nfsd_file_unhash(nf);  in nfsd_file_lru_cb()
544 	list_lru_isolate(lru, &nf->nf_lru);  in nfsd_file_lru_cb()
545 	list_add(&nf->nf_gc, head);  in nfsd_file_lru_cb()
547 	trace_nfsd_file_gc_disposed(nf);  in nfsd_file_lru_cb()
594  * @nf: nfsd_file to attempt to queue
601 nfsd_file_cond_queue(struct nfsd_file *nf, struct list_head *dispose)  in nfsd_file_cond_queue()  argument
607 	if (!nfsd_file_unhash(nf))  in nfsd_file_cond_queue()
611 	if (!nfsd_file_get(nf))  in nfsd_file_cond_queue()
615 	if (nfsd_file_lru_remove(nf))  in nfsd_file_cond_queue()
619 	if (refcount_sub_and_test(decrement, &nf->nf_ref)) {  in nfsd_file_cond_queue()
620 		list_add(&nf->nf_gc, dispose);  in nfsd_file_cond_queue()
621 		trace_nfsd_file_closing(nf);  in nfsd_file_cond_queue()
645 	struct nfsd_file *nf;  in nfsd_file_queue_for_close()  local
650 	rhl_for_each_entry_rcu(nf, tmp, list, nf_rlist) {  in nfsd_file_queue_for_close()
651 		if (!test_bit(NFSD_FILE_GC, &nf->nf_flags))  in nfsd_file_queue_for_close()
653 		nfsd_file_cond_queue(nf, dispose);  in nfsd_file_queue_for_close()
689 	struct nfsd_file *nf;  in nfsd_file_close_inode_sync()  local
696 		nf = list_first_entry(&dispose, struct nfsd_file, nf_gc);  in nfsd_file_close_inode_sync()
697 		list_del_init(&nf->nf_gc);  in nfsd_file_close_inode_sync()
698 		nfsd_file_free(nf);  in nfsd_file_close_inode_sync()
843 	struct nfsd_file *nf;  in __nfsd_file_cache_purge()  local
858 		nf = rhashtable_walk_next(&iter);  in __nfsd_file_cache_purge()
859 		while (!IS_ERR_OR_NULL(nf)) {  in __nfsd_file_cache_purge()
860 			if (!net || nf->nf_net == net)  in __nfsd_file_cache_purge()
861 				nfsd_file_cond_queue(nf, &dispose);  in __nfsd_file_cache_purge()
862 			nf = rhashtable_walk_next(&iter);  in __nfsd_file_cache_purge()
866 	} while (nf == ERR_PTR(-EAGAIN));  in __nfsd_file_cache_purge()
974 	struct nfsd_file *nf;  in nfsd_file_lookup_locked()  local
978 	rhl_for_each_entry_rcu(nf, tmp, list, nf_rlist) {  in nfsd_file_lookup_locked()
979 		if (nf->nf_may != need)  in nfsd_file_lookup_locked()
981 		if (nf->nf_net != net)  in nfsd_file_lookup_locked()
983 		if (!nfsd_match_cred(nf->nf_cred, cred))  in nfsd_file_lookup_locked()
985 		if (test_bit(NFSD_FILE_GC, &nf->nf_flags) != want_gc)  in nfsd_file_lookup_locked()
987 		if (test_bit(NFSD_FILE_HASHED, &nf->nf_flags) == 0)  in nfsd_file_lookup_locked()
990 		if (!nfsd_file_get(nf))  in nfsd_file_lookup_locked()
992 		return nf;  in nfsd_file_lookup_locked()
1012 	struct nfsd_file *nf;  in nfsd_file_is_cached()  local
1018 	rhl_for_each_entry_rcu(nf, tmp, list, nf_rlist)  in nfsd_file_is_cached()
1019 		if (test_bit(NFSD_FILE_GC, &nf->nf_flags)) {  in nfsd_file_is_cached()
1038 	struct nfsd_file *new, *nf;  in nfsd_file_do_acquire()  local
1058 	nf = nfsd_file_lookup_locked(net, current_cred(), inode, need, want_gc);  in nfsd_file_do_acquire()
1061 	if (nf) {  in nfsd_file_do_acquire()
1063 		 * If the nf is on the LRU then it holds an extra reference  in nfsd_file_do_acquire()
1067 		if (nfsd_file_lru_remove(nf))  in nfsd_file_do_acquire()
1068 			refcount_dec(&nf->nf_ref);  in nfsd_file_do_acquire()
1080 	nf = nfsd_file_lookup_locked(net, current_cred(), inode, need, want_gc);  in nfsd_file_do_acquire()
1081 	if (unlikely(nf)) {  in nfsd_file_do_acquire()
1087 	nf = new;  in nfsd_file_do_acquire()
1088 	ret = rhltable_insert(&nfsd_file_rhltable, &nf->nf_rlist,  in nfsd_file_do_acquire()
1100 	wait_on_bit(&nf->nf_flags, NFSD_FILE_PENDING, TASK_UNINTERRUPTIBLE);  in nfsd_file_do_acquire()
1103 	if (!test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {  in nfsd_file_do_acquire()
1104 		trace_nfsd_file_cons_err(rqstp, inode, may_flags, nf);  in nfsd_file_do_acquire()
1109 		nfsd_file_put(nf);  in nfsd_file_do_acquire()
1116 	status = nfserrno(nfsd_open_break_lease(file_inode(nf->nf_file), may_flags));  in nfsd_file_do_acquire()
1118 		nfsd_file_put(nf);  in nfsd_file_do_acquire()
1119 		nf = NULL;  in nfsd_file_do_acquire()
1125 		nfsd_file_check_write_error(nf);  in nfsd_file_do_acquire()
1126 		*pnf = nf;  in nfsd_file_do_acquire()
1128 	trace_nfsd_file_acquire(rqstp, inode, may_flags, nf, status);  in nfsd_file_do_acquire()
1132 	trace_nfsd_file_alloc(nf);  in nfsd_file_do_acquire()
1133 	nf->nf_mark = nfsd_file_mark_find_or_create(inode);  in nfsd_file_do_acquire()
1134 	if (nf->nf_mark) {  in nfsd_file_do_acquire()
1137 			nf->nf_file = file;  in nfsd_file_do_acquire()
1139 			trace_nfsd_file_opened(nf, status);  in nfsd_file_do_acquire()
1141 			ret = nfsd_open_verified(fhp, may_flags, &nf->nf_file);  in nfsd_file_do_acquire()
1144 				nfsd_file_unhash(nf);  in nfsd_file_do_acquire()
1146 						      &nf->nf_flags);  in nfsd_file_do_acquire()
1147 				if (refcount_dec_and_test(&nf->nf_ref))  in nfsd_file_do_acquire()
1148 					nfsd_file_free(nf);  in nfsd_file_do_acquire()
1149 				nf = NULL;  in nfsd_file_do_acquire()
1154 			trace_nfsd_file_open(nf, status);  in nfsd_file_do_acquire()
1163 		nfsd_file_unhash(nf);  in nfsd_file_do_acquire()
1164 	clear_and_wake_up_bit(NFSD_FILE_PENDING, &nf->nf_flags);  in nfsd_file_do_acquire()
1169 	if (refcount_dec_and_test(&nf->nf_ref))  in nfsd_file_do_acquire()
1170 		nfsd_file_free(nf);  in nfsd_file_do_acquire()
1171 	nf = NULL;  in nfsd_file_do_acquire()