1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index f27e8f644dfe..8c1f7954882a 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2303,6 +2303,8 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
                 else
                         rdev->in_sync = 0;
 
+                rdev->sb_size = MD_SB_BYTES;
+
                 if (info->state & (1<<MD_DISK_WRITEMOSTLY))
                         set_bit(WriteMostly, &rdev->flags);