On 7/10/19 9:54 AM, Damien Le Moal wrote:
> diff --git a/block/blk-mq.h b/block/blk-mq.h
> index 633a5a77ee8b..c9195a2cd670 100644
> --- a/block/blk-mq.h
> +++ b/block/blk-mq.h
> @@ -238,4 +238,14 @@ static inline void blk_mq_clear_mq_map(struct blk_mq_queue_map *qmap)
> qmap->mq_map[cpu] = 0;
> }
>
> +static inline struct blk_plug *blk_mq_plug(struct request_queue *q,
> + struct bio *bio)
> +{
> + if (!blk_queue_is_zoned(q) || !op_is_write(bio_op(bio)))
> + return current->plug;
> +
> + /* Zoned block device write case: do not plug the BIO */
> + return NULL;
> +}
> +
> #endif
Folks are going to look at that and be puzzled, I think that function
deserves a comment.
--
Jens Axboe
