1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 4cc6b0e398bc..2737247d2a02 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5871,7 +5871,8 @@ static int check_reshape(struct mddev *mddev)
         if (!check_stripe_cache(mddev))
                 return -ENOSPC;
 
-        return resize_stripes(conf, conf->raid_disks + mddev->delta_disks);
+        return resize_stripes(conf, (conf->previous_raid_disks
+                                     + mddev->delta_disks));
 }
 
 static int raid5_start_reshape(struct mddev *mddev)