Re: [PATCH] loop: Add LOOP_SET_DIRECT_IO in compat ioctl

[Joel Fernandes]

Hi Alessio,

On Tue, Aug 6, 2019 at 6:05 PM Alessio Balsini <balsini@xxxxxxxxxxx> wrote:
>
> Export LOOP_SET_DIRECT_IO as additional lo_compat_ioctl.
> The input argument for this ioctl is a single long, in the end converted
> to a 1-bit boolean. Compatibility is then preserved.
>
> Cc: Jens Axboe <axboe@xxxxxxxxx>
> Signed-off-by: Alessio Balsini <balsini@xxxxxxxxxxx>

This looks Ok to me, but I believe the commit message should also
explain what was this patch "fixing", how was this lack of an "export"
noticed, why does it matter, etc as well.

thanks,

 - Joel


> ---
>  drivers/block/loop.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/block/loop.c b/drivers/block/loop.c
> index 3036883fc9f8..a7461f482467 100644
> --- a/drivers/block/loop.c
> +++ b/drivers/block/loop.c
> @@ -1755,6 +1755,7 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode,
>         case LOOP_SET_FD:
>         case LOOP_CHANGE_FD:
>         case LOOP_SET_BLOCK_SIZE:
> +       case LOOP_SET_DIRECT_IO:
>                 err = lo_ioctl(bdev, mode, cmd, arg);
>                 break;
>         default:
> --
> 2.22.0.770.g0f2c4a37fd-goog
>
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