304 	if (mddev->ro == 1 && unlikely(rw == WRITE)) {  in md_make_request()
2408 	if (mddev->ro) {  in md_update_sb()
3849 		switch(mddev->ro) {  in array_state_show()
3877 static int do_md_stop(struct mddev * mddev, int ro, struct block_device *bdev);
3907 			mddev->ro = 1;  in array_state_store()
3914 			if (mddev->ro == 0)  in array_state_store()
3916 			else if (mddev->ro == 1)  in array_state_store()
3919 				mddev->ro = 2;  in array_state_store()
3923 			mddev->ro = 2;  in array_state_store()
3952 			mddev->ro = 0;  in array_state_store()
4206 	    (!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))) {  in action_show()
4262 	if (mddev->ro == 2) {  in action_store()
4266 		mddev->ro = 0;  in action_store()
4469 		    mddev->ro == 0 &&  in max_sync_store()
5080 	if (start_readonly && mddev->ro == 0)  in md_run()
5081 		mddev->ro = 2; /* read-only, but switch on first write */  in md_run()
5118 	} else if (mddev->ro == 2) /* auto-readonly not meaningful */  in md_run()
5119 		mddev->ro = 0;  in md_run()
5182 	if (!mddev->ro)  in restart_array()
5185 	mddev->ro = 0;  in restart_array()
5238 	mddev->ro = 0;  in md_clean()
5282 	if (mddev->ro == 0 &&  in __md_stop_writes()
5337 		if (mddev->ro==1)  in md_set_readonly()
5339 		mddev->ro = 1;  in md_set_readonly()
5376 		if (mddev->ro)  in do_md_stop()
5396 		if (mddev->ro)  in do_md_stop()
5397 			mddev->ro = 0;  in do_md_stop()
6337 	int ro;  in md_ioctl()  local
6512 		if (get_user(ro, (int __user *)(arg))) {  in md_ioctl()
6521 		if (ro)  in md_ioctl()
6525 		if (mddev->ro != 1)  in md_ioctl()
6534 				mddev->ro = 2;  in md_ioctl()
6548 	if (_IOC_TYPE(cmd) == MD_MAJOR && mddev->ro && mddev->pers) {  in md_ioctl()
6549 		if (mddev->ro == 2) {  in md_ioctl()
6550 			mddev->ro = 0;  in md_ioctl()
7027 			if (mddev->ro==1)  in md_seq_show()
7029 			if (mddev->ro==2)  in md_seq_show()
7230 	BUG_ON(mddev->ro == 1);  in md_write_start()
7231 	if (mddev->ro == 2) {  in md_write_start()
7233 		mddev->ro = 0;  in md_write_start()
7282 	if (mddev->ro)  in md_allow_write()
7332 	if (mddev->ro) /* never try to sync a read-only array */  in md_do_sync()
7695 		if (mddev->ro &&  in remove_and_add_spares()
7711 		if (mddev->ro && rdev->recovery_offset != MaxSector)  in remove_and_add_spares()
7768 	if (mddev->ro && !test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))  in md_check_recovery()
7783 		if (mddev->ro) {  in md_check_recovery()