RE: [PATCH for-next] io_uring: clean up io_prep_rw_setup()

[lizetao <lizetao1@huawei.com>]

> -----Original Message-----
> From: David Wei <dw@davidwei.uk>
> Sent: Saturday, December 7, 2024 8:42 AM
> To: io-uring@vger.kernel.org
> Cc: David Wei <dw@davidwei.uk>; Jens Axboe <axboe@kernel.dk>; Pavel
> Begunkov <asml.silence@gmail.com>
> Subject: [PATCH for-next] io_uring: clean up io_prep_rw_setup()
> 
> Remove unnecessary call to iov_iter_save_state() in io_prep_rw_setup() as
> io_import_iovec() already does this. Then the result from
> io_import_iovec() can be returned directly.
> 
> Signed-off-by: David Wei <dw@davidwei.uk>
> ---
>  io_uring/rw.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/io_uring/rw.c b/io_uring/rw.c index 04e4467ab0ee..5b24fd8b69f6
> 100644
> --- a/io_uring/rw.c
> +++ b/io_uring/rw.c
> @@ -240,7 +240,6 @@ static int io_rw_alloc_async(struct io_kiocb *req)
> static int io_prep_rw_setup(struct io_kiocb *req, int ddir, bool do_import)  {
>  	struct io_async_rw *rw;
> -	int ret;
> 
>  	if (io_rw_alloc_async(req))
>  		return -ENOMEM;
> @@ -249,12 +248,7 @@ static int io_prep_rw_setup(struct io_kiocb *req, int
> ddir, bool do_import)
>  		return 0;
> 
>  	rw = req->async_data;
> -	ret = io_import_iovec(ddir, req, rw, 0);
> -	if (unlikely(ret < 0))
> -		return ret;
> -
> -	iov_iter_save_state(&rw->iter, &rw->iter_state);
> -	return 0;
> +	return io_import_iovec(ddir, req, rw, 0);
>  }
> 
>  static inline void io_meta_save_state(struct io_async_rw *io)
> --
> 2.43.5
> 

Look good to me. No logic changes, only compilation and testing.
Tested-by: Li Zetao <lizetao1@huawei.com>