md/raid5: use bio_end_sector to calculate last_sector

Use the common way to get last_sector.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Song Liu <songliubraving@fb.com>

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 88e56ee98976af58ac2c3c9b12474483ba0da6f5..da6a86e283184796cbaccd44f009f5a262354edd 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5499,7 +5499,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi)
                return;
 
        logical_sector = bi->bi_iter.bi_sector & ~((sector_t)STRIPE_SECTORS-1);
-       last_sector = bi->bi_iter.bi_sector + (bi->bi_iter.bi_size>>9);
+       last_sector = bio_end_sector(bi);
 
        bi->bi_next = NULL;