diff options
Diffstat (limited to 'io_uring/rw.h')
| -rw-r--r-- | io_uring/rw.h | 40 |
1 files changed, 28 insertions, 12 deletions
diff --git a/io_uring/rw.h b/io_uring/rw.h index f9e89b4fe4da..eaa59bd64870 100644 --- a/io_uring/rw.h +++ b/io_uring/rw.h @@ -2,28 +2,44 @@ #include <linux/pagemap.h> -struct io_rw_state { - struct iov_iter iter; - struct iov_iter_state iter_state; - struct iovec fast_iov[UIO_FASTIOV]; +struct io_meta_state { + u32 seed; + struct iov_iter_state iter_meta; }; struct io_async_rw { - struct io_rw_state s; - const struct iovec *free_iovec; size_t bytes_done; - struct wait_page_queue wpq; + struct iovec *free_iovec; + struct_group(clear, + struct iov_iter iter; + struct iov_iter_state iter_state; + struct iovec fast_iov; + int free_iov_nr; + /* + * 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_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe); -int io_prep_rwv(struct io_kiocb *req, const struct io_uring_sqe *sqe); -int io_prep_rw_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe); +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(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_readv_prep_async(struct io_kiocb *req); int io_write(struct io_kiocb *req, unsigned int issue_flags); -int io_writev_prep_async(struct io_kiocb *req); 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, struct io_tw_state *ts); 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); |