I'm sorry, ignore this one.
Li Feng <fengli@xxxxxxxxxx> 于2021年1月12日周二 下午11:30写道：
>
> If the physical_block_size and io_min is less than a sector, the
> 'granularity >> SECTOR_SHIFT' will be zero.
>
> Signed-off-by: Li Feng <fengli@xxxxxxxxxx>
> ---
> include/linux/blkdev.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
> index f94ee3089e01..4d029e95adb4 100644
> --- a/include/linux/blkdev.h
> +++ b/include/linux/blkdev.h
> @@ -1485,6 +1485,10 @@ static inline int queue_alignment_offset(const struct request_queue *q)
> static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector)
> {
> unsigned int granularity = max(lim->physical_block_size, lim->io_min);
> + granularity = granularity >> SECTOR_SHIFT;
> + if (!granularity)
> + return 0;
> +
> unsigned int alignment = sector_div(sector, granularity >> SECTOR_SHIFT)
> << SECTOR_SHIFT;
>
> --
> 2.29.2
>
