265 	if (mddev->ro == 1 && unlikely(rw == WRITE)) {  in md_make_request()
2228 	if (mddev->ro) {  in md_update_sb()
3358 	if (mddev->ro)  in level_store()
3562 		else if (mddev->ro)  in layout_store()
3663 		else if (mddev->ro)  in chunk_size_store()
3776 		switch(mddev->ro) {  in array_state_show()
3804 static int do_md_stop(struct mddev *mddev, int ro, struct block_device *bdev);
3815 	if (mddev->pers && (st == active || st == clean) && mddev->ro != 1) {  in array_state_store()
3865 			mddev->ro = 1;  in array_state_store()
3872 			if (mddev->ro == 0)  in array_state_store()
3874 			else if (mddev->ro == 1)  in array_state_store()
3877 				mddev->ro = 2;  in array_state_store()
3881 			mddev->ro = 2;  in array_state_store()
3910 			mddev->ro = 0;  in array_state_store()
4196 	    (!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &recovery))) {  in action_show()
4263 	if (mddev->ro == 2) {  in action_store()
4267 		mddev->ro = 0;  in action_store()
4490 		    mddev->ro == 0 &&  in max_sync_store()
5134 	if (start_readonly && mddev->ro == 0)  in md_run()
5135 		mddev->ro = 2; /* read-only, but switch on first write */  in md_run()
5183 	} else if (mddev->ro == 2) /* auto-readonly not meaningful */  in md_run()
5184 		mddev->ro = 0;  in md_run()
5250 	if (!mddev->ro)  in restart_array()
5253 	mddev->ro = 0;  in restart_array()
5280 	mddev->ro = 0;  in md_clean()
5328 	if (mddev->ro == 0 &&  in __md_stop_writes()
5437 		if (mddev->ro==1)  in md_set_readonly()
5439 		mddev->ro = 1;  in md_set_readonly()
5497 		if (mddev->ro)  in do_md_stop()
5517 		if (mddev->ro)  in do_md_stop()
5518 			mddev->ro = 0;  in do_md_stop()
6306 	if (mddev->ro)  in update_size()
6330 	if (mddev->ro)  in update_raid_disks()
6559 	int ro;  in md_ioctl()  local
6753 		if (get_user(ro, (int __user *)(arg))) {  in md_ioctl()
6762 		if (ro)  in md_ioctl()
6766 		if (mddev->ro != 1)  in md_ioctl()
6775 				mddev->ro = 2;  in md_ioctl()
6786 	if (mddev->ro && mddev->pers) {  in md_ioctl()
6787 		if (mddev->ro == 2) {  in md_ioctl()
6788 			mddev->ro = 0;  in md_ioctl()
7257 			if (mddev->ro==1)  in md_seq_show()
7259 			if (mddev->ro==2)  in md_seq_show()
7517 	BUG_ON(mddev->ro == 1);  in md_write_start()
7518 	if (mddev->ro == 2) {  in md_write_start()
7520 		mddev->ro = 0;  in md_write_start()
7571 	if (mddev->ro)  in md_allow_write()
7625 	if (mddev->ro) {/* never try to sync a read-only array */  in md_do_sync()
8013 		if (mddev->ro &&  in remove_and_add_spares()
8101 	if (mddev->ro && !test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))  in md_check_recovery()
8116 		if (mddev->ro) {  in md_check_recovery()