Re: [PATCH v3 6/8] dm: add add_disk() error handling

[Hannes Reinecke]

On 8/30/21 11:25 PM, Luis Chamberlain wrote:
> We never checked for errors on add_disk() as this function
> returned void. Now that this is fixed, use the shiny new
> error handling.
>
> There are two calls to dm_setup_md_queue() which can fail then,
> one on dm_early_create() and we can easily see that the error path
> there calls dm_destroy in the error path. The other use case is on
> the ioctl table_load case. If that fails userspace needs to call
> the DM_DEV_REMOVE_CMD to cleanup the state - similar to any other
> failure.
>
> Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
> ---
>   drivers/md/dm.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke                Kernel Storage Architect
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