Re: [PATCH 13/14] PM: mm: cleanup swsusp_swap_check

[Rafael J. Wysocki]

On Thu, Sep 17, 2020 at 7:39 PM Christoph Hellwig <hch@xxxxxx> wrote:
>
> Use blkdev_get_by_dev instead of bdget + blkdev_get.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

> ---
>  kernel/power/swap.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/kernel/power/swap.c b/kernel/power/swap.c
> index 9d3ffbfe08dbf6..71385bedcc3a49 100644
> --- a/kernel/power/swap.c
> +++ b/kernel/power/swap.c
> @@ -343,12 +343,10 @@ static int swsusp_swap_check(void)
>                 return res;
>         root_swap = res;
>
> -       hib_resume_bdev = bdget(swsusp_resume_device);
> -       if (!hib_resume_bdev)
> -               return -ENOMEM;
> -       res = blkdev_get(hib_resume_bdev, FMODE_WRITE, NULL);
> -       if (res)
> -               return res;
> +       hib_resume_bdev = blkdev_get_by_dev(swsusp_resume_device, FMODE_WRITE,
> +                       NULL);
> +       if (IS_ERR(hib_resume_bdev))
> +               return PTR_ERR(hib_resume_bdev);
>
>         res = set_blocksize(hib_resume_bdev, PAGE_SIZE);
>         if (res < 0)
> --
> 2.28.0
>