// SPDX-License-Identifier: GPL-2.0 #include <linux/io_uring_types.h>#include <linux/pagemap.h>#include <linux/uio.h> struct io_meta_state {	u32			seed;	struct iov_iter_state	iter_meta;}; struct io_async_rw {	struct iou_vec			vec;	size_t				bytes_done; 	struct_group(clear,		struct iov_iter			iter;		struct iov_iter_state		iter_state;		struct iovec			fast_iov;		unsigned			buf_group; 		/*		 * wpq is for buffered io, while meta fields are used with		 * direct io		 */		union {			struct wait_page_queue		wpq;			struct {				struct uio_meta			meta;				struct io_meta_state		meta_state;			};		};	);}; int io_prep_read_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_write_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_readv_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_writev_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_readv(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_writev(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_read(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_prep_write(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_read(struct io_kiocb *req, unsigned int issue_flags);int io_write(struct io_kiocb *req, unsigned int issue_flags);int io_read_fixed(struct io_kiocb *req, unsigned int issue_flags);int io_write_fixed(struct io_kiocb *req, unsigned int issue_flags);void io_readv_writev_cleanup(struct io_kiocb *req);void io_rw_fail(struct io_kiocb *req);void io_req_rw_complete(struct io_tw_req tw_req, io_tw_token_t tw);int io_read_mshot_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags);void io_rw_cache_free(const void *entry);