Re: [PATCH 3/5] block: add a queue_has_disk helper

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On Mon 09-08-21 16:17:42, Christoph Hellwig wrote:
> Add a helper to check if a gendisk is associated with a request_queue.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Looks fine. Feel free to add:

Reviewed-by: Jan Kara <jack@xxxxxxx>

								Honza

> ---
>  include/linux/blkdev.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
> index ac3642c88a4d..96f3d9617cd8 100644
> --- a/include/linux/blkdev.h
> +++ b/include/linux/blkdev.h
> @@ -664,6 +664,7 @@ extern void blk_clear_pm_only(struct request_queue *q);
>  	dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \
>  	(dir), (attrs))
>  
> +#define queue_has_disk(q)	((q)->kobj.parent != NULL)
>  #define queue_to_disk(q)	(dev_to_disk(kobj_to_dev((q)->kobj.parent)))
>  
>  static inline bool queue_is_mq(struct request_queue *q)
> -- 
> 2.30.2
> 
-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR



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