linux-kernel - Re: [PATCH] xen/blkfront: Adjust indentation in xlvbd_alloc

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Date:   Mon, 9 Dec 2019 13:07:41 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Nathan Chancellor <natechancellor@...il.com>
Cc:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Roger Pau Monné <roger.pau@...rix.com>,
        Jens Axboe <axboe@...nel.dk>,
        Stefano Stabellini <stefano.stabellini@...citrix.com>,
        xen-devel@...ts.xenproject.org, linux-block@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] xen/blkfront: Adjust indentation in xlvbd_alloc_gendisk

On Mon, Dec 9, 2019 at 12:14 PM Nathan Chancellor
<natechancellor@...il.com> wrote:
>
> Clang warns:
>
> ../drivers/block/xen-blkfront.c:1117:4: warning: misleading indentation;
> statement is not part of the previous 'if' [-Wmisleading-indentation]
>                 nr_parts = PARTS_PER_DISK;
>                 ^
> ../drivers/block/xen-blkfront.c:1115:3: note: previous statement is here
>                 if (err)
>                 ^
>
> This is because there is a space at the beginning of this line; remove
> it so that the indentation is consistent according to the Linux kernel
> coding style and clang no longer warns.
>
> While we are here, the previous line has some trailing whitespace; clean
> that up as well.
>
> Fixes: c80a420995e7 ("xen-blkfront: handle Xen major numbers other than XENVBD")
> Link: https://github.com/ClangBuiltLinux/linux/issues/791
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
> ---
>  drivers/block/xen-blkfront.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
> index a74d03913822..c02be06c5299 100644
> --- a/drivers/block/xen-blkfront.c
> +++ b/drivers/block/xen-blkfront.c
> @@ -1113,8 +1113,8 @@ static int xlvbd_alloc_gendisk(blkif_sector_t capacity,

While you're here, would you please also removing the single space
before the labels in this function?

In vim:

/^ [a-zA-Z]

turns up 5 labels with this.

>         if (!VDEV_IS_EXTENDED(info->vdevice)) {
>                 err = xen_translate_vdev(info->vdevice, &minor, &offset);
>                 if (err)
> -                       return err;
> -               nr_parts = PARTS_PER_DISK;
> +                       return err;
> +               nr_parts = PARTS_PER_DISK;
>         } else {
>                 minor = BLKIF_MINOR_EXT(info->vdevice);
>                 nr_parts = PARTS_PER_EXT_DISK;
> --
> 2.24.0
>
> --
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-- 
Thanks,
~Nick Desaulniers