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-rw-r--r--drivers/md/raid5.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 88e56ee98976..da6a86e28318 100644
--- 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;