Re: [PATCH v2] block: improve discard bio alignment in __blkdev_issue_discard()

[Bart Van Assche <bvanassche@xxxxxxx>]

On 2020-05-29 09:34, Coly Li wrote:
> +static inline unsigned int bio_aligned_discard_max_sectors(
> +					struct request_queue *q)
> +{
> +	return round_down(UINT_MAX,
> +			 (q->limits.max_discard_sectors << SECTOR_SHIFT))
> +			>> SECTOR_SHIFT;
> +}

max_discard_sectors has been declared as an unsigned int. Can the shift
left operation overflow?

Thanks,

Bart.