On 15/09/2020 15:55, David Laight wrote:
>
> This is the only code that relies on import_iovec() returning
> iter.count on success.
> This allows a better interface to import_iovec().
Seems this got nowhere. I'll pick it and send with some other
patches to Jens.
> Signed-off-by: David Laight <david.lai...@aculab.com>
> ---
> fs/io_uring.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/fs/io_uring.c b/fs/io_uring.c
> index 3790c7fe9fee..0df43882e4b3 100644
> --- a/fs/io_uring.c
> +++ b/fs/io_uring.c
> @@ -2824,7 +2824,7 @@ static ssize_t __io_import_iovec(int rw, struct
> io_kiocb *req,
>
> ret = import_single_range(rw, buf, sqe_len, *iovec, iter);
> *iovec = NULL;
> - return ret < 0 ? ret : sqe_len;
> + return ret;
> }
>
> if (req->flags & REQ_F_BUFFER_SELECT) {
> @@ -2853,7 +2853,7 @@ static ssize_t io_import_iovec(int rw, struct io_kiocb
> *req,
> if (!req->io)
> return __io_import_iovec(rw, req, iovec, iter, needs_lock);
> *iovec = NULL;
> - return iov_iter_count(&req->io->rw.iter);
> + return 0;
> }
>
> static inline loff_t *io_kiocb_ppos(struct kiocb *kiocb)
> @@ -3123,7 +3123,7 @@ static int io_read(struct io_kiocb *req, bool
> force_nonblock,
> if (ret < 0)
> return ret;
> iov_count = iov_iter_count(iter);
> - io_size = ret;
> + io_size = iov_count;
> req->result = io_size;
> ret = 0;
>
> @@ -3246,7 +3246,7 @@ static int io_write(struct io_kiocb *req, bool
> force_nonblock,
> if (ret < 0)
> return ret;
> iov_count = iov_iter_count(iter);
> - io_size = ret;
> + io_size = iov_count;
> req->result = io_size;
>
> /* Ensure we clear previously set non-block flag */
>
--
Pavel Begunkov
