29 	struct fuse_ring_ent *ent;  member
40 	pdu->ent = ring_ent;  in uring_cmd_set_ring_ent()
48 	return pdu->ent;  in uring_cmd_to_ring_ent()
79 static void fuse_uring_req_end(struct fuse_ring_ent *ent, struct fuse_req *req,  in fuse_uring_req_end()  argument
82 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_req_end()
88 	ent->fuse_req = NULL;  in fuse_uring_req_end()
147 	struct fuse_ring_ent *ent;  in ent_list_request_expired()  local
150 	ent = list_first_entry_or_null(list, struct fuse_ring_ent, list);  in ent_list_request_expired()
151 	if (!ent)  in ent_list_request_expired()
154 	req = ent->fuse_req;  in ent_list_request_expired()
198 		struct fuse_ring_ent *ent, *next;  in fuse_uring_destruct()  local
208 		list_for_each_entry_safe(ent, next, &queue->ent_released,  in fuse_uring_destruct()
210 			list_del_init(&ent->list);  in fuse_uring_destruct()
211 			kfree(ent);  in fuse_uring_destruct()
328 static void fuse_uring_entry_teardown(struct fuse_ring_ent *ent)  in fuse_uring_entry_teardown()  argument
333 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_entry_teardown()
336 	cmd = ent->cmd;  in fuse_uring_entry_teardown()
337 	ent->cmd = NULL;  in fuse_uring_entry_teardown()
338 	req = ent->fuse_req;  in fuse_uring_entry_teardown()
339 	ent->fuse_req = NULL;  in fuse_uring_entry_teardown()
351 	list_move(&ent->list, &queue->ent_released);  in fuse_uring_entry_teardown()
352 	ent->state = FRRS_RELEASED;  in fuse_uring_entry_teardown()
367 	struct fuse_ring_ent *ent, *next;  in fuse_uring_stop_list_entries()  local
372 	list_for_each_entry_safe(ent, next, head, list) {  in fuse_uring_stop_list_entries()
373 		if (ent->state != exp_state) {  in fuse_uring_stop_list_entries()
375 				queue->qid, ent->state, exp_state);  in fuse_uring_stop_list_entries()
379 		ent->state = FRRS_TEARDOWN;  in fuse_uring_stop_list_entries()
380 		list_move(&ent->list, &to_teardown);  in fuse_uring_stop_list_entries()
385 	list_for_each_entry_safe(ent, next, &to_teardown, list) {  in fuse_uring_stop_list_entries()
386 		fuse_uring_entry_teardown(ent);  in fuse_uring_stop_list_entries()
406 	struct fuse_ring_ent *ent;  in fuse_uring_log_ent_state()  local
419 		list_for_each_entry(ent, &queue->ent_w_req_queue, list) {  in fuse_uring_log_ent_state()
421 				ring, qid, ent, ent->state);  in fuse_uring_log_ent_state()
423 		list_for_each_entry(ent, &queue->ent_commit_queue, list) {  in fuse_uring_log_ent_state()
425 				ring, qid, ent, ent->state);  in fuse_uring_log_ent_state()
503 	struct fuse_ring_ent *ent = uring_cmd_to_ring_ent(cmd);  in fuse_uring_cancel()  local
511 	queue = ent->queue;  in fuse_uring_cancel()
513 	if (ent->state == FRRS_AVAILABLE) {  in fuse_uring_cancel()
514 		ent->state = FRRS_USERSPACE;  in fuse_uring_cancel()
515 		list_move_tail(&ent->list, &queue->ent_in_userspace);  in fuse_uring_cancel()
517 		ent->cmd = NULL;  in fuse_uring_cancel()
580 				     struct fuse_ring_ent *ent)  in fuse_uring_copy_from_ring()  argument
588 	err = copy_from_user(&ring_in_out, &ent->headers->ring_ent_in_out,  in fuse_uring_copy_from_ring()
593 	err = import_ubuf(ITER_SOURCE, ent->payload, ring->max_payload_sz,  in fuse_uring_copy_from_ring()
611 				   struct fuse_ring_ent *ent)  in fuse_uring_args_to_ring()  argument
624 	err = import_ubuf(ITER_DEST, ent->payload, ring->max_payload_sz, &iter);  in fuse_uring_args_to_ring()
640 			err = copy_to_user(&ent->headers->op_in, in_args->value,  in fuse_uring_args_to_ring()
662 	err = copy_to_user(&ent->headers->ring_ent_in_out, &ent_in_out,  in fuse_uring_args_to_ring()
667 static int fuse_uring_copy_to_ring(struct fuse_ring_ent *ent,  in fuse_uring_copy_to_ring()  argument
670 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_copy_to_ring()
675 	if (WARN_ON(ent->state != FRRS_FUSE_REQ)) {  in fuse_uring_copy_to_ring()
677 		       queue->qid, ent, ent->state);  in fuse_uring_copy_to_ring()
686 	err = fuse_uring_args_to_ring(ring, req, ent);  in fuse_uring_copy_to_ring()
693 	err = copy_to_user(&ent->headers->in_out, &req->in.h,  in fuse_uring_copy_to_ring()
703 static int fuse_uring_prepare_send(struct fuse_ring_ent *ent,  in fuse_uring_prepare_send()  argument
708 	err = fuse_uring_copy_to_ring(ent, req);  in fuse_uring_prepare_send()
712 		fuse_uring_req_end(ent, req, err);  in fuse_uring_prepare_send()
722 static int fuse_uring_send_next_to_ring(struct fuse_ring_ent *ent,  in fuse_uring_send_next_to_ring()  argument
726 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_send_next_to_ring()
730 	err = fuse_uring_prepare_send(ent, req);  in fuse_uring_send_next_to_ring()
735 	cmd = ent->cmd;  in fuse_uring_send_next_to_ring()
736 	ent->cmd = NULL;  in fuse_uring_send_next_to_ring()
737 	ent->state = FRRS_USERSPACE;  in fuse_uring_send_next_to_ring()
738 	list_move_tail(&ent->list, &queue->ent_in_userspace);  in fuse_uring_send_next_to_ring()
748 static void fuse_uring_ent_avail(struct fuse_ring_ent *ent,  in fuse_uring_ent_avail()  argument
751 	WARN_ON_ONCE(!ent->cmd);  in fuse_uring_ent_avail()
752 	list_move(&ent->list, &queue->ent_avail_queue);  in fuse_uring_ent_avail()
753 	ent->state = FRRS_AVAILABLE;  in fuse_uring_ent_avail()
757 static void fuse_uring_add_to_pq(struct fuse_ring_ent *ent,  in fuse_uring_add_to_pq()  argument
760 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_add_to_pq()
764 	req->ring_entry = ent;  in fuse_uring_add_to_pq()
772 static void fuse_uring_add_req_to_ring_ent(struct fuse_ring_ent *ent,  in fuse_uring_add_req_to_ring_ent()  argument
775 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_add_req_to_ring_ent()
779 	if (WARN_ON_ONCE(ent->state != FRRS_AVAILABLE &&  in fuse_uring_add_req_to_ring_ent()
780 			 ent->state != FRRS_COMMIT)) {  in fuse_uring_add_req_to_ring_ent()
781 		pr_warn("%s qid=%d state=%d\n", __func__, ent->queue->qid,  in fuse_uring_add_req_to_ring_ent()
782 			ent->state);  in fuse_uring_add_req_to_ring_ent()
786 	ent->fuse_req = req;  in fuse_uring_add_req_to_ring_ent()
787 	ent->state = FRRS_FUSE_REQ;  in fuse_uring_add_req_to_ring_ent()
788 	list_move_tail(&ent->list, &queue->ent_w_req_queue);  in fuse_uring_add_req_to_ring_ent()
789 	fuse_uring_add_to_pq(ent, req);  in fuse_uring_add_req_to_ring_ent()
793 static struct fuse_req *fuse_uring_ent_assign_req(struct fuse_ring_ent *ent)  in fuse_uring_ent_assign_req()  argument
797 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_ent_assign_req()
805 		fuse_uring_add_req_to_ring_ent(ent, req);  in fuse_uring_ent_assign_req()
815 static void fuse_uring_commit(struct fuse_ring_ent *ent, struct fuse_req *req,  in fuse_uring_commit()  argument
818 	struct fuse_ring *ring = ent->queue->ring;  in fuse_uring_commit()
822 	err = copy_from_user(&req->out.h, &ent->headers->in_out,  in fuse_uring_commit()
835 	err = fuse_uring_copy_from_ring(ring, req, ent);  in fuse_uring_commit()
837 	fuse_uring_req_end(ent, req, err);  in fuse_uring_commit()
843 static void fuse_uring_next_fuse_req(struct fuse_ring_ent *ent,  in fuse_uring_next_fuse_req()  argument
852 	fuse_uring_ent_avail(ent, queue);  in fuse_uring_next_fuse_req()
853 	req = fuse_uring_ent_assign_req(ent);  in fuse_uring_next_fuse_req()
857 		err = fuse_uring_send_next_to_ring(ent, req, issue_flags);  in fuse_uring_next_fuse_req()
863 static int fuse_ring_ent_set_commit(struct fuse_ring_ent *ent)  in fuse_ring_ent_set_commit()  argument
865 	struct fuse_ring_queue *queue = ent->queue;  in fuse_ring_ent_set_commit()
869 	if (WARN_ON_ONCE(ent->state != FRRS_USERSPACE))  in fuse_ring_ent_set_commit()
872 	ent->state = FRRS_COMMIT;  in fuse_ring_ent_set_commit()
873 	list_move(&ent->list, &queue->ent_commit_queue);  in fuse_ring_ent_set_commit()
883 	struct fuse_ring_ent *ent;  in fuse_uring_commit_fetch()  local
922 	ent = req->ring_entry;  in fuse_uring_commit_fetch()
925 	err = fuse_ring_ent_set_commit(ent);  in fuse_uring_commit_fetch()
928 				    queue->qid, commit_id, ent->state);  in fuse_uring_commit_fetch()
936 	ent->cmd = cmd;  in fuse_uring_commit_fetch()
940 	fuse_uring_prepare_cancel(cmd, issue_flags, ent);  in fuse_uring_commit_fetch()
941 	fuse_uring_commit(ent, req, issue_flags);  in fuse_uring_commit_fetch()
949 	fuse_uring_next_fuse_req(ent, queue, issue_flags);  in fuse_uring_commit_fetch()
981 static void fuse_uring_do_register(struct fuse_ring_ent *ent,  in fuse_uring_do_register()  argument
985 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_do_register()
990 	fuse_uring_prepare_cancel(cmd, issue_flags, ent);  in fuse_uring_do_register()
993 	ent->cmd = cmd;  in fuse_uring_do_register()
994 	fuse_uring_ent_avail(ent, queue);  in fuse_uring_do_register()
1039 	struct fuse_ring_ent *ent;  in fuse_uring_create_ring_ent()  local
1065 	ent = kzalloc(sizeof(*ent), GFP_KERNEL_ACCOUNT);  in fuse_uring_create_ring_ent()
1066 	if (!ent)  in fuse_uring_create_ring_ent()
1069 	INIT_LIST_HEAD(&ent->list);  in fuse_uring_create_ring_ent()
1071 	ent->queue = queue;  in fuse_uring_create_ring_ent()
1072 	ent->headers = iov[0].iov_base;  in fuse_uring_create_ring_ent()
1073 	ent->payload = iov[1].iov_base;  in fuse_uring_create_ring_ent()
1076 	return ent;  in fuse_uring_create_ring_ent()
1089 	struct fuse_ring_ent *ent;  in fuse_uring_register()  local
1117 	ent = fuse_uring_create_ring_ent(cmd, queue);  in fuse_uring_register()
1118 	if (IS_ERR(ent))  in fuse_uring_register()
1119 		return PTR_ERR(ent);  in fuse_uring_register()
1121 	fuse_uring_do_register(ent, cmd, issue_flags);  in fuse_uring_register()
1197 static void fuse_uring_send(struct fuse_ring_ent *ent, struct io_uring_cmd *cmd,  in fuse_uring_send()  argument
1200 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_send()
1203 	ent->state = FRRS_USERSPACE;  in fuse_uring_send()
1204 	list_move_tail(&ent->list, &queue->ent_in_userspace);  in fuse_uring_send()
1205 	ent->cmd = NULL;  in fuse_uring_send()
1220 	struct fuse_ring_ent *ent = uring_cmd_to_ring_ent(cmd);  in fuse_uring_send_in_task()  local
1221 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_send_in_task()
1225 		err = fuse_uring_prepare_send(ent, ent->fuse_req);  in fuse_uring_send_in_task()
1227 			fuse_uring_next_fuse_req(ent, queue, issue_flags);  in fuse_uring_send_in_task()
1234 	fuse_uring_send(ent, cmd, err, issue_flags);  in fuse_uring_send_in_task()
1255 static void fuse_uring_dispatch_ent(struct fuse_ring_ent *ent)  in fuse_uring_dispatch_ent()  argument
1257 	struct io_uring_cmd *cmd = ent->cmd;  in fuse_uring_dispatch_ent()
1259 	uring_cmd_set_ring_ent(cmd, ent);  in fuse_uring_dispatch_ent()
1269 	struct fuse_ring_ent *ent = NULL;  in fuse_uring_queue_fuse_req()  local
1286 	ent = list_first_entry_or_null(&queue->ent_avail_queue,  in fuse_uring_queue_fuse_req()
1288 	if (ent)  in fuse_uring_queue_fuse_req()
1289 		fuse_uring_add_req_to_ring_ent(ent, req);  in fuse_uring_queue_fuse_req()
1294 	if (ent)  in fuse_uring_queue_fuse_req()
1295 		fuse_uring_dispatch_ent(ent);  in fuse_uring_queue_fuse_req()
1312 	struct fuse_ring_ent *ent = NULL;  in fuse_uring_queue_bq_req()  local
1328 	ent = list_first_entry_or_null(&queue->ent_avail_queue,  in fuse_uring_queue_bq_req()
1344 	if (ent && req) {  in fuse_uring_queue_bq_req()
1345 		fuse_uring_add_req_to_ring_ent(ent, req);  in fuse_uring_queue_bq_req()
1348 		fuse_uring_dispatch_ent(ent);  in fuse_uring_queue_bq_req()