Re: [PATCH 2/2] cdrom: gdrom: update gendisk capacity on open

[Adrian McMenamin]

On Sun, 5 Apr 2026 at 09:23, Florian Fuchs <fuchsfl@xxxxxxxxx> wrote:
>
> Update the gendisk capacity of the media. Without the capacity, the block
> reads fail before reaching the request queue, which prevented ISO9660
> mounts. Refresh the capacity from the TOC leadout in gdrom_bdops_open()
> so it checks the inserted media.
>
...
> +
>  static int gdrom_bdops_open(struct gendisk *disk, blk_mode_t mode)
>  {
>         int ret;
> @@ -492,6 +511,8 @@ static int gdrom_bdops_open(struct gendisk *disk, blk_mode_t mode)
>
>         mutex_lock(&gdrom_mutex);
>         ret = cdrom_open(gd.cd_info, mode);
> +       if (!ret)
> +               ret = gdrom_update_capacity();
>         mutex_unlock(&gdrom_mutex);
>         return ret;
>  }


Will this not reintrocue the potential race condition bug that was
eliminated here -
https://github.com/mcmenaminadrian/linux/commit/2bbea6e117357d17842114c65e9a9cf2d13ae8a3
(not by me, I add)?