// SPDX-License-Identifier: GPL-2.0 int io_msg_ring_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); int io_msg_ring(struct io_kiocb *req, unsigned int issue_flags); void io_msg_ring_cleanup(struct io_kiocb *req); void io_msg_cache_free(const void *entry);