On Wed, Aug 23, 2017 at 07:10:28PM +0200, Christoph Hellwig wrote:
> The block layer always remaps partitions before calling into the
> ->make_request methods of drivers. Thus the call to get_start_sect in
> in_chunk_boundary will always return 0 and can be removed.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> drivers/md/raid5.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
> index 0fc2748aaf95..d687aeb1b538 100644
> --- a/drivers/md/raid5.c
> +++ b/drivers/md/raid5.c
> @@ -5092,10 +5092,12 @@ static int raid5_congested(struct mddev *mddev, int bits)
> static int in_chunk_boundary(struct mddev *mddev, struct bio *bio)
> {
> struct r5conf *conf = mddev->private;
> - sector_t sector = bio->bi_iter.bi_sector + get_start_sect(bio->bi_bdev);
> + sector_t sector = bio->bi_iter.bi_sector;
> unsigned int chunk_sectors;
> unsigned int bio_sectors = bio_sectors(bio);
>
> + WARN_ON_ONCE(bio->bi_partno);
> +
> chunk_sectors = min(conf->chunk_sectors, conf->prev_chunk_sectors);
> return chunk_sectors >=
> ((sector & (chunk_sectors - 1)) + bio_sectors);
Reviewed-by: Shaohua Li <shli@xxxxxx>
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