MD_DISK_ROLE_SPARE
if (rdev2->raid_disk == -1 && role != MD_DISK_ROLE_SPARE &&
role = MD_DISK_ROLE_SPARE;
case MD_DISK_ROLE_SPARE: /* spare */
sb->dev_roles[i] = cpu_to_le16(MD_DISK_ROLE_SPARE);
sb->dev_roles[i] = cpu_to_le16(MD_DISK_ROLE_SPARE);
if (role == MD_DISK_ROLE_SPARE && rdev->raid_disk >= 0 &&