[dm-devel] [PATCH v4 02/11] block: introduce bio zone helpers

[Himanshu Madhani]

On 5/24/21 9:25 PM, Damien Le Moal wrote:
> Introduce the helper functions bio_zone_no() and bio_zone_is_seq().
> Both are the BIO counterparts of the request helpers blk_rq_zone_no()
> and blk_rq_zone_is_seq(), respectively returning the number of the
> target zone of a bio and true if the BIO target zone is sequential.
> 
> Signed-off-by: Damien Le Moal <damien.lemoal at wdc.com>
> Reviewed-by: Hannes Reinecke <hare at suse.de>
> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni at wdc.com>
> ---
>   include/linux/blkdev.h | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
> 
> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
> index f69c75bd6d27..2db0f376f5d9 100644
> --- a/include/linux/blkdev.h
> +++ b/include/linux/blkdev.h
> @@ -1008,6 +1008,18 @@ static inline unsigned int blk_rq_stats_sectors(const struct request *rq)
>   /* Helper to convert BLK_ZONE_ZONE_XXX to its string format XXX */
>   const char *blk_zone_cond_str(enum blk_zone_cond zone_cond);
>   
> +static inline unsigned int bio_zone_no(struct bio *bio)
> +{
> +	return blk_queue_zone_no(bdev_get_queue(bio->bi_bdev),
> +				 bio->bi_iter.bi_sector);
> +}
> +
> +static inline unsigned int bio_zone_is_seq(struct bio *bio)
> +{
> +	return blk_queue_zone_is_seq(bdev_get_queue(bio->bi_bdev),
> +				     bio->bi_iter.bi_sector);
> +}
> +
>   static inline unsigned int blk_rq_zone_no(struct request *rq)
>   {
>   	return blk_queue_zone_no(rq->q, blk_rq_pos(rq));
> 

Reviewed-by: Himanshu Madhani <himanshu.madhani at oracle.com>

-- 
Himanshu Madhani                                Oracle Linux Engineering