tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2
3#include <linux/pagemap.h>
4
5struct io_meta_state {
6 u32 seed;
7 struct iov_iter_state iter_meta;
8};
9
10struct io_async_rw {
11 size_t bytes_done;
12 struct iovec *free_iovec;
13 struct_group(clear,
14 struct iov_iter iter;
15 struct iov_iter_state iter_state;
16 struct iovec fast_iov;
17 int free_iov_nr;
18 /*
19 * wpq is for buffered io, while meta fields are used with
20 * direct io
21 */
22 union {
23 struct wait_page_queue wpq;
24 struct {
25 struct uio_meta meta;
26 struct io_meta_state meta_state;
27 };
28 };
29 );
30};
31
32int io_prep_read_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);
33int io_prep_write_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe);
34int io_prep_readv(struct io_kiocb *req, const struct io_uring_sqe *sqe);
35int io_prep_writev(struct io_kiocb *req, const struct io_uring_sqe *sqe);
36int io_prep_read(struct io_kiocb *req, const struct io_uring_sqe *sqe);
37int io_prep_write(struct io_kiocb *req, const struct io_uring_sqe *sqe);
38int io_read(struct io_kiocb *req, unsigned int issue_flags);
39int io_write(struct io_kiocb *req, unsigned int issue_flags);
40void io_readv_writev_cleanup(struct io_kiocb *req);
41void io_rw_fail(struct io_kiocb *req);
42void io_req_rw_complete(struct io_kiocb *req, struct io_tw_state *ts);
43int io_read_mshot_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
44int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags);
45void io_rw_cache_free(const void *entry);