tmp->rdev->in_sync = 1;
set_bit(In_sync, &tmp->rdev->flags);
static int raid5_spare_active(mddev_t *mddev){	int i;	raid5_conf_t *conf = mddev->private;	struct disk_info *tmp;	for (i = 0; i < conf->raid_disks; i++) {		tmp = conf->disks + i;		if (tmp->rdev		    && !tmp->rdev->faulty		    && !tmp->rdev->in_sync) {			mddev->degraded--;			conf->failed_disks--;			conf->working_disks++;			tmp->rdev->in_sync = 1;		}	}	print_raid5_conf(conf);	return 0;}