28 	struct fuse_ring_ent *ent;  member
39 	pdu->ent = ring_ent;  in uring_cmd_set_ring_ent()
47 	return pdu->ent;  in uring_cmd_to_ring_ent()
78 static void fuse_uring_req_end(struct fuse_ring_ent *ent, struct fuse_req *req,  in fuse_uring_req_end()  argument
81 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_req_end()
87 	ent->fuse_req = NULL;  in fuse_uring_req_end()
153 		struct fuse_ring_ent *ent, *next;  in fuse_uring_destruct()  local
163 		list_for_each_entry_safe(ent, next, &queue->ent_released,  in fuse_uring_destruct()
165 			list_del_init(&ent->list);  in fuse_uring_destruct()
166 			kfree(ent);  in fuse_uring_destruct()
284 static void fuse_uring_entry_teardown(struct fuse_ring_ent *ent)  in fuse_uring_entry_teardown()  argument
289 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_entry_teardown()
292 	cmd = ent->cmd;  in fuse_uring_entry_teardown()
293 	ent->cmd = NULL;  in fuse_uring_entry_teardown()
294 	req = ent->fuse_req;  in fuse_uring_entry_teardown()
295 	ent->fuse_req = NULL;  in fuse_uring_entry_teardown()
307 	list_move(&ent->list, &queue->ent_released);  in fuse_uring_entry_teardown()
308 	ent->state = FRRS_RELEASED;  in fuse_uring_entry_teardown()
323 	struct fuse_ring_ent *ent, *next;  in fuse_uring_stop_list_entries()  local
328 	list_for_each_entry_safe(ent, next, head, list) {  in fuse_uring_stop_list_entries()
329 		if (ent->state != exp_state) {  in fuse_uring_stop_list_entries()
331 				queue->qid, ent->state, exp_state);  in fuse_uring_stop_list_entries()
335 		ent->state = FRRS_TEARDOWN;  in fuse_uring_stop_list_entries()
336 		list_move(&ent->list, &to_teardown);  in fuse_uring_stop_list_entries()
341 	list_for_each_entry_safe(ent, next, &to_teardown, list) {  in fuse_uring_stop_list_entries()
342 		fuse_uring_entry_teardown(ent);  in fuse_uring_stop_list_entries()
362 	struct fuse_ring_ent *ent;  in fuse_uring_log_ent_state()  local
375 		list_for_each_entry(ent, &queue->ent_w_req_queue, list) {  in fuse_uring_log_ent_state()
377 				ring, qid, ent, ent->state);  in fuse_uring_log_ent_state()
379 		list_for_each_entry(ent, &queue->ent_commit_queue, list) {  in fuse_uring_log_ent_state()
381 				ring, qid, ent, ent->state);  in fuse_uring_log_ent_state()
459 	struct fuse_ring_ent *ent = uring_cmd_to_ring_ent(cmd);  in fuse_uring_cancel()  local
467 	queue = ent->queue;  in fuse_uring_cancel()
469 	if (ent->state == FRRS_AVAILABLE) {  in fuse_uring_cancel()
470 		ent->state = FRRS_USERSPACE;  in fuse_uring_cancel()
471 		list_move(&ent->list, &queue->ent_in_userspace);  in fuse_uring_cancel()
473 		ent->cmd = NULL;  in fuse_uring_cancel()
536 				     struct fuse_ring_ent *ent)  in fuse_uring_copy_from_ring()  argument
544 	err = copy_from_user(&ring_in_out, &ent->headers->ring_ent_in_out,  in fuse_uring_copy_from_ring()
549 	err = import_ubuf(ITER_SOURCE, ent->payload, ring->max_payload_sz,  in fuse_uring_copy_from_ring()
565 				   struct fuse_ring_ent *ent)  in fuse_uring_args_to_ring()  argument
578 	err = import_ubuf(ITER_DEST, ent->payload, ring->max_payload_sz, &iter);  in fuse_uring_args_to_ring()
594 			err = copy_to_user(&ent->headers->op_in, in_args->value,  in fuse_uring_args_to_ring()
615 	err = copy_to_user(&ent->headers->ring_ent_in_out, &ent_in_out,  in fuse_uring_args_to_ring()
620 static int fuse_uring_copy_to_ring(struct fuse_ring_ent *ent,  in fuse_uring_copy_to_ring()  argument
623 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_copy_to_ring()
628 	if (WARN_ON(ent->state != FRRS_FUSE_REQ)) {  in fuse_uring_copy_to_ring()
630 		       queue->qid, ent, ent->state);  in fuse_uring_copy_to_ring()
639 	err = fuse_uring_args_to_ring(ring, req, ent);  in fuse_uring_copy_to_ring()
646 	err = copy_to_user(&ent->headers->in_out, &req->in.h,  in fuse_uring_copy_to_ring()
656 static int fuse_uring_prepare_send(struct fuse_ring_ent *ent,  in fuse_uring_prepare_send()  argument
661 	err = fuse_uring_copy_to_ring(ent, req);  in fuse_uring_prepare_send()
665 		fuse_uring_req_end(ent, req, err);  in fuse_uring_prepare_send()
675 static int fuse_uring_send_next_to_ring(struct fuse_ring_ent *ent,  in fuse_uring_send_next_to_ring()  argument
679 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_send_next_to_ring()
683 	err = fuse_uring_prepare_send(ent, req);  in fuse_uring_send_next_to_ring()
688 	cmd = ent->cmd;  in fuse_uring_send_next_to_ring()
689 	ent->cmd = NULL;  in fuse_uring_send_next_to_ring()
690 	ent->state = FRRS_USERSPACE;  in fuse_uring_send_next_to_ring()
691 	list_move(&ent->list, &queue->ent_in_userspace);  in fuse_uring_send_next_to_ring()
701 static void fuse_uring_ent_avail(struct fuse_ring_ent *ent,  in fuse_uring_ent_avail()  argument
704 	WARN_ON_ONCE(!ent->cmd);  in fuse_uring_ent_avail()
705 	list_move(&ent->list, &queue->ent_avail_queue);  in fuse_uring_ent_avail()
706 	ent->state = FRRS_AVAILABLE;  in fuse_uring_ent_avail()
710 static void fuse_uring_add_to_pq(struct fuse_ring_ent *ent,  in fuse_uring_add_to_pq()  argument
713 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_add_to_pq()
717 	req->ring_entry = ent;  in fuse_uring_add_to_pq()
725 static void fuse_uring_add_req_to_ring_ent(struct fuse_ring_ent *ent,  in fuse_uring_add_req_to_ring_ent()  argument
728 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_add_req_to_ring_ent()
732 	if (WARN_ON_ONCE(ent->state != FRRS_AVAILABLE &&  in fuse_uring_add_req_to_ring_ent()
733 			 ent->state != FRRS_COMMIT)) {  in fuse_uring_add_req_to_ring_ent()
734 		pr_warn("%s qid=%d state=%d\n", __func__, ent->queue->qid,  in fuse_uring_add_req_to_ring_ent()
735 			ent->state);  in fuse_uring_add_req_to_ring_ent()
739 	ent->fuse_req = req;  in fuse_uring_add_req_to_ring_ent()
740 	ent->state = FRRS_FUSE_REQ;  in fuse_uring_add_req_to_ring_ent()
741 	list_move(&ent->list, &queue->ent_w_req_queue);  in fuse_uring_add_req_to_ring_ent()
742 	fuse_uring_add_to_pq(ent, req);  in fuse_uring_add_req_to_ring_ent()
746 static struct fuse_req *fuse_uring_ent_assign_req(struct fuse_ring_ent *ent)  in fuse_uring_ent_assign_req()  argument
750 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_ent_assign_req()
758 		fuse_uring_add_req_to_ring_ent(ent, req);  in fuse_uring_ent_assign_req()
768 static void fuse_uring_commit(struct fuse_ring_ent *ent, struct fuse_req *req,  in fuse_uring_commit()  argument
771 	struct fuse_ring *ring = ent->queue->ring;  in fuse_uring_commit()
775 	err = copy_from_user(&req->out.h, &ent->headers->in_out,  in fuse_uring_commit()
788 	err = fuse_uring_copy_from_ring(ring, req, ent);  in fuse_uring_commit()
790 	fuse_uring_req_end(ent, req, err);  in fuse_uring_commit()
796 static void fuse_uring_next_fuse_req(struct fuse_ring_ent *ent,  in fuse_uring_next_fuse_req()  argument
805 	fuse_uring_ent_avail(ent, queue);  in fuse_uring_next_fuse_req()
806 	req = fuse_uring_ent_assign_req(ent);  in fuse_uring_next_fuse_req()
810 		err = fuse_uring_send_next_to_ring(ent, req, issue_flags);  in fuse_uring_next_fuse_req()
816 static int fuse_ring_ent_set_commit(struct fuse_ring_ent *ent)  in fuse_ring_ent_set_commit()  argument
818 	struct fuse_ring_queue *queue = ent->queue;  in fuse_ring_ent_set_commit()
822 	if (WARN_ON_ONCE(ent->state != FRRS_USERSPACE))  in fuse_ring_ent_set_commit()
825 	ent->state = FRRS_COMMIT;  in fuse_ring_ent_set_commit()
826 	list_move(&ent->list, &queue->ent_commit_queue);  in fuse_ring_ent_set_commit()
836 	struct fuse_ring_ent *ent;  in fuse_uring_commit_fetch()  local
875 	ent = req->ring_entry;  in fuse_uring_commit_fetch()
878 	err = fuse_ring_ent_set_commit(ent);  in fuse_uring_commit_fetch()
881 				    queue->qid, commit_id, ent->state);  in fuse_uring_commit_fetch()
889 	ent->cmd = cmd;  in fuse_uring_commit_fetch()
893 	fuse_uring_prepare_cancel(cmd, issue_flags, ent);  in fuse_uring_commit_fetch()
894 	fuse_uring_commit(ent, req, issue_flags);  in fuse_uring_commit_fetch()
902 	fuse_uring_next_fuse_req(ent, queue, issue_flags);  in fuse_uring_commit_fetch()
934 static void fuse_uring_do_register(struct fuse_ring_ent *ent,  in fuse_uring_do_register()  argument
938 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_do_register()
943 	fuse_uring_prepare_cancel(cmd, issue_flags, ent);  in fuse_uring_do_register()
946 	ent->cmd = cmd;  in fuse_uring_do_register()
947 	fuse_uring_ent_avail(ent, queue);  in fuse_uring_do_register()
992 	struct fuse_ring_ent *ent;  in fuse_uring_create_ring_ent()  local
1018 	ent = kzalloc(sizeof(*ent), GFP_KERNEL_ACCOUNT);  in fuse_uring_create_ring_ent()
1019 	if (!ent)  in fuse_uring_create_ring_ent()
1022 	INIT_LIST_HEAD(&ent->list);  in fuse_uring_create_ring_ent()
1024 	ent->queue = queue;  in fuse_uring_create_ring_ent()
1025 	ent->headers = iov[0].iov_base;  in fuse_uring_create_ring_ent()
1026 	ent->payload = iov[1].iov_base;  in fuse_uring_create_ring_ent()
1029 	return ent;  in fuse_uring_create_ring_ent()
1042 	struct fuse_ring_ent *ent;  in fuse_uring_register()  local
1070 	ent = fuse_uring_create_ring_ent(cmd, queue);  in fuse_uring_register()
1071 	if (IS_ERR(ent))  in fuse_uring_register()
1072 		return PTR_ERR(ent);  in fuse_uring_register()
1074 	fuse_uring_do_register(ent, cmd, issue_flags);  in fuse_uring_register()
1150 static void fuse_uring_send(struct fuse_ring_ent *ent, struct io_uring_cmd *cmd,  in fuse_uring_send()  argument
1153 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_send()
1156 	ent->state = FRRS_USERSPACE;  in fuse_uring_send()
1157 	list_move(&ent->list, &queue->ent_in_userspace);  in fuse_uring_send()
1158 	ent->cmd = NULL;  in fuse_uring_send()
1172 	struct fuse_ring_ent *ent = uring_cmd_to_ring_ent(cmd);  in fuse_uring_send_in_task()  local
1173 	struct fuse_ring_queue *queue = ent->queue;  in fuse_uring_send_in_task()
1177 		err = fuse_uring_prepare_send(ent, ent->fuse_req);  in fuse_uring_send_in_task()
1179 			fuse_uring_next_fuse_req(ent, queue, issue_flags);  in fuse_uring_send_in_task()
1186 	fuse_uring_send(ent, cmd, err, issue_flags);  in fuse_uring_send_in_task()
1207 static void fuse_uring_dispatch_ent(struct fuse_ring_ent *ent)  in fuse_uring_dispatch_ent()  argument
1209 	struct io_uring_cmd *cmd = ent->cmd;  in fuse_uring_dispatch_ent()
1211 	uring_cmd_set_ring_ent(cmd, ent);  in fuse_uring_dispatch_ent()
1221 	struct fuse_ring_ent *ent = NULL;  in fuse_uring_queue_fuse_req()  local
1239 	ent = list_first_entry_or_null(&queue->ent_avail_queue,  in fuse_uring_queue_fuse_req()
1241 	if (ent)  in fuse_uring_queue_fuse_req()
1242 		fuse_uring_add_req_to_ring_ent(ent, req);  in fuse_uring_queue_fuse_req()
1247 	if (ent)  in fuse_uring_queue_fuse_req()
1248 		fuse_uring_dispatch_ent(ent);  in fuse_uring_queue_fuse_req()
1265 	struct fuse_ring_ent *ent = NULL;  in fuse_uring_queue_bq_req()  local
1281 	ent = list_first_entry_or_null(&queue->ent_avail_queue,  in fuse_uring_queue_bq_req()
1297 	if (ent && req) {  in fuse_uring_queue_bq_req()
1298 		fuse_uring_add_req_to_ring_ent(ent, req);  in fuse_uring_queue_bq_req()
1301 		fuse_uring_dispatch_ent(ent);  in fuse_uring_queue_bq_req()