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-rw-r--r--drivers/md/raid1.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 39b2a8aa3b23..34b4665cb0b6 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -517,8 +517,8 @@ static int read_balance(struct r1conf *conf, struct r1bio *r1_bio, int *max_sect
int bad_sectors;
int disk = start_disk + i;
- if (disk >= conf->raid_disks)
- disk -= conf->raid_disks;
+ if (disk >= conf->raid_disks * 2)
+ disk -= conf->raid_disks * 2;
rdev = rcu_dereference(conf->mirrors[disk].rdev);
if (r1_bio->bios[disk] == IO_BLOCKED