linux-kernel - Re: [PATCH 0/2] ublk: specify io_cmd

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Message-ID: <Z-c91HQmMb2ozGdh@fedora>
Date: Sat, 29 Mar 2025 08:24:52 +0800
From: Ming Lei <ming.lei@...hat.com>
To: Caleb Sander Mateos <csander@...estorage.com>
Cc: Jens Axboe <axboe@...nel.dk>, Shuah Khan <shuah@...nel.org>,
	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 0/2] ublk: specify io_cmd_buf pointer type

On Fri, Mar 28, 2025 at 01:42:28PM -0600, Caleb Sander Mateos wrote:
> io_cmd_buf points to an array of ublksrv_io_desc structs but its type is
> char *. Indexing the array requires an explicit multiplication and cast.
> The compiler also can't check the pointer types.
> 
> Change io_cmd_buf's type to struct ublksrv_io_desc * so it can be
> indexed directly and the compiler can type-check the code.
> 
> Make the same change to the ublk selftests.
> 
> Caleb Sander Mateos (2):
>   ublk: specify io_cmd_buf pointer type
>   selftests: ublk: specify io_cmd_buf pointer type
> 
>  drivers/block/ublk_drv.c             | 8 ++++----
>  tools/testing/selftests/ublk/kublk.c | 2 +-
>  tools/testing/selftests/ublk/kublk.h | 4 ++--
>  3 files changed, 7 insertions(+), 7 deletions(-)

Reviewed-by: Ming Lei <ming.lei@...hat.com>

Thanks,
Ming