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// SPDX-License-Identifier: GPL-2.0
#include <linux/io_uring_types.h>
#include <linux/pagemap.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;
/*
* 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_kiocb *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);
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