Re: [PATCH 04/26] block: add a flag to make put_disk on partially initalized disks safer

[Hannes Reinecke <hare@xxxxxxx>]

On 5/21/21 7:50 AM, Christoph Hellwig wrote:
> Add a flag to indicate that __device_add_disk did grab a queue reference
> so that disk_release only drops it if we actually had it.  This sort
> out one of the major pitfals with partially initialized gendisk that
                       pitfalls

> a lot of drivers did get wrong or still do.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>   block/genhd.c         | 7 +++++--
>   include/linux/genhd.h | 1 +
>   2 files changed, 6 insertions(+), 2 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke                Kernel Storage Architect
hare@xxxxxxx                              +49 911 74053 688
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