Re: [PATCH 1/2] md/raid0: Free r0conf memory when register integrity failed

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On Wed, Dec 8, 2021 at 9:55 PM Xiao Ni <xni@xxxxxxxxxx> wrote:
>
> It doesn't free memory when register integrity failed. And move
> free conf codes into a single function.
>
> Signed-off-by: Xiao Ni <xni@xxxxxxxxxx>
> ---
>  drivers/md/raid0.c | 18 +++++++++++++++---
>  1 file changed, 15 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
> index 62c8b6adac70..3fa47df1c60e 100644
> --- a/drivers/md/raid0.c
> +++ b/drivers/md/raid0.c
> @@ -356,6 +356,7 @@ static sector_t raid0_size(struct mddev *mddev, sector_t sectors, int raid_disks
>         return array_sectors;
>  }
>
> +static void free_conf(struct r0conf *conf);
>  static void raid0_free(struct mddev *mddev, void *priv);
>
>  static int raid0_run(struct mddev *mddev)
> @@ -413,19 +414,30 @@ static int raid0_run(struct mddev *mddev)
>         dump_zones(mddev);
>
>         ret = md_integrity_register(mddev);
> +       if (ret)
> +               goto free;
>
>         return ret;
> +
> +free:
> +       free_conf(conf);

Can we just use raid0_free() here? Also, after freeing conf,
we should set mddev->private to NULL.

Thanks,
Song



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