267 	if (mddev->ro == 1 && unlikely(rw == WRITE)) {  in md_make_request()
2292 	if (mddev->ro) {  in md_update_sb()
3453 	if (mddev->ro)  in level_store()
3657 		else if (mddev->ro)  in layout_store()
3758 		else if (mddev->ro)  in chunk_size_store()
3876 		switch(mddev->ro) {  in array_state_show()
3904 static int do_md_stop(struct mddev *mddev, int ro, struct block_device *bdev);
3915 	if (mddev->pers && (st == active || st == clean) && mddev->ro != 1) {  in array_state_store()
3965 			mddev->ro = 1;  in array_state_store()
3972 			if (mddev->ro == 0)  in array_state_store()
3974 			else if (mddev->ro == 1)  in array_state_store()
3977 				mddev->ro = 2;  in array_state_store()
3981 			mddev->ro = 2;  in array_state_store()
4014 			mddev->ro = 0;  in array_state_store()
4296 	    (!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &recovery))) {  in action_show()
4368 	if (mddev->ro == 2) {  in action_store()
4372 		mddev->ro = 0;  in action_store()
4601 		    mddev->ro == 0 &&  in max_sync_store()
5249 	if (start_readonly && mddev->ro == 0)  in md_run()
5250 		mddev->ro = 2; /* read-only, but switch on first write */  in md_run()
5297 	} else if (mddev->ro == 2) /* auto-readonly not meaningful */  in md_run()
5298 		mddev->ro = 0;  in md_run()
5319 	if (mddev->degraded && !mddev->ro)  in md_run()
5373 	if (!mddev->ro)  in restart_array()
5395 	mddev->ro = 0;  in restart_array()
5422 	mddev->ro = 0;  in md_clean()
5467 	if (mddev->ro == 0 &&  in __md_stop_writes()
5580 		if (mddev->ro==1)  in md_set_readonly()
5582 		mddev->ro = 1;  in md_set_readonly()
5640 		if (mddev->ro)  in do_md_stop()
5659 		if (mddev->ro)  in do_md_stop()
5660 			mddev->ro = 0;  in do_md_stop()
6449 	if (mddev->ro)  in update_size()
6473 	if (mddev->ro)  in update_raid_disks()
6696 	int ro;  in md_ioctl()  local
6890 		if (get_user(ro, (int __user *)(arg))) {  in md_ioctl()
6899 		if (ro)  in md_ioctl()
6903 		if (mddev->ro != 1)  in md_ioctl()
6912 				mddev->ro = 2;  in md_ioctl()
6923 	if (mddev->ro && mddev->pers) {  in md_ioctl()
6924 		if (mddev->ro == 2) {  in md_ioctl()
6925 			mddev->ro = 0;  in md_ioctl()
7409 			if (mddev->ro==1)  in md_seq_show()
7411 			if (mddev->ro==2)  in md_seq_show()
7670 	BUG_ON(mddev->ro == 1);  in md_write_start()
7671 	if (mddev->ro == 2) {  in md_write_start()
7673 		mddev->ro = 0;  in md_write_start()
7724 	if (mddev->ro)  in md_allow_write()
7775 	if (mddev->ro) {/* never try to sync a read-only array */  in md_do_sync()
8184 		if (mddev->ro &&  in remove_and_add_spares()
8283 	if (mddev->ro && !test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))  in md_check_recovery()
8298 		if (mddev->ro) {  in md_check_recovery()