158         STAILQ_REMOVE_HEAD(&head, io_next);  in _proxy_event_handler_dequeue()
160         io->io_next.stqe_next = NULL;  in _proxy_event_handler_dequeue()
163         STAILQ_INSERT_TAIL(&be->io_head, io, io_next);  in _proxy_event_handler_dequeue()
303         STAILQ_REMOVE_HEAD(&be->io_head, io_next);  in _proxy_flush_backend_queue()
457     STAILQ_REMOVE_HEAD(&be->io_head, io_next);  in _drive_machine_next()
459     assert(p != be->io_next); // don't remove what we need to flush.  in _drive_machine_next()
884         STAILQ_REMOVE_HEAD(&be->io_head, io_next);  in _reset_bad_backend()
896     be->io_next = NULL; // also reset the write offset.  in _reset_bad_backend()
924     if (be->io_next == NULL) {  in _prep_pending_write()
928         io = be->io_next;  in _prep_pending_write()
931     for (; io; io = STAILQ_NEXT(io, io_next)) {  in _prep_pending_write()
949     io_pending_proxy_t *io = be->io_next;  in _post_pending_write()
954     for (; io; io = STAILQ_NEXT(io, io_next)) {  in _post_pending_write()
992             be->io_next = io;  in _post_pending_write()
995             io_pending_proxy_t *nio = STAILQ_NEXT(io, io_next);  in _post_pending_write()
997                 be->io_next = nio;  in _post_pending_write()
999                 be->io_next = NULL;  in _post_pending_write()
1003         be->io_next = NULL;  in _post_pending_write()
1020         if (be->io_next) {  in _flush_pending_write()
1050         if (be->io_next) {  in _flush_pending_tls_write()