127 		device_state_change->disk_state[OLD] = device->state.disk;  in remember_old_state()
178 		device_state_change->disk_state[NEW] = device->state.disk;  in remember_new_state()
303 		if (device->state.disk != D_DISKLESS ||  in conn_all_vols_unconf()
376 		disk_state = max_t(enum drbd_disk_state, disk_state, device->state.disk);  in conn_highest_disk()
392 		disk_state = min_t(enum drbd_disk_state, disk_state, device->state.disk);  in conn_lowest_disk()
474 		  (os.disk != D_FAILED && ns.disk == D_FAILED))) ||  in cl_wide_st_chg()
661  * We grab drbd_md_get_buffer(), because we don't want to "fail" the disk while
675 	return drbd_req_state(device, NS(disk, D_FAILED),  in request_detach()
689 			device->state.disk != D_FAILED);  in drbd_request_detach_interruptible()
722 	    drbd_disk_str(ns.disk),  in print_st()
762 	if (ns.disk != os.disk && flags & CS_DC_DISK)  in print_state_change()
763 		pbp += sprintf(pbp, "disk( %s -> %s ) ",  in print_state_change()
764 			       drbd_disk_str(os.disk),  in print_state_change()
765 			       drbd_disk_str(ns.disk));  in print_state_change()
853 	else if (ns.role == R_PRIMARY && ns.conn < C_CONNECTED && ns.disk < D_UP_TO_DATE)  in is_valid_state()
860 	else if (ns.role == R_PRIMARY && ns.disk <= D_INCONSISTENT && ns.pdsk <= D_INCONSISTENT)  in is_valid_state()
863 	else if (ns.conn > C_CONNECTED && ns.disk < D_INCONSISTENT)  in is_valid_state()
869 	else if (ns.conn > C_CONNECTED && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE)  in is_valid_state()
876 		  ns.disk == D_OUTDATED)  in is_valid_state()
887 	else if (ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE)  in is_valid_state()
923 	if (ns.disk > D_ATTACHING && os.disk == D_DISKLESS)  in is_valid_soft_transition()
929 	if (ns.disk == D_OUTDATED && os.disk < D_OUTDATED && os.disk != D_ATTACHING)  in is_valid_soft_transition()
947 		&& ns.disk != D_UP_TO_DATE && ns.disk != D_DISKLESS  in is_valid_soft_transition()
1008  * imposed on DRBD by the environment. E.g. disk broke or network broke down.
1021 	if (ns.disk == D_FAILED && os.disk == D_DISKLESS)  in is_valid_transition()
1034 		[IMPLICITLY_UPGRADED_DISK] = "Implicitly upgraded disk",  in print_sanitize_warnings()
1049  * When we loose connection, we have to set the state of the peers disk (pdsk)
1078 	if (ns.conn == C_STANDALONE && ns.disk == D_DISKLESS && ns.role == R_SECONDARY)  in sanitize_state()
1081 	/* An implication of the disk states onto the connection state */  in sanitize_state()
1082 	/* Abort resync if a disk fails/detaches */  in sanitize_state()
1083 	if (ns.conn > C_CONNECTED && (ns.disk <= D_FAILED || ns.pdsk <= D_FAILED)) {  in sanitize_state()
1091 	if (ns.conn < C_CONNECTED && ns.disk == D_NEGOTIATING &&  in sanitize_state()
1094 			ns.disk = device->new_state_tmp.disk;  in sanitize_state()
1099 			ns.disk = D_DISKLESS;  in sanitize_state()
1107 		if (ns.disk == D_CONSISTENT || ns.disk == D_OUTDATED)  in sanitize_state()
1108 			ns.disk = D_UP_TO_DATE;  in sanitize_state()
1113 	/* Implications of the connection state on the disk states */  in sanitize_state()
1176 	if (ns.disk > disk_max)  in sanitize_state()
1177 		ns.disk = disk_max;  in sanitize_state()
1179 	if (ns.disk < disk_min) {  in sanitize_state()
1182 		ns.disk = disk_min;  in sanitize_state()
1199 	    (ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE) &&  in sanitize_state()
1200 	    !(os.role == R_PRIMARY && os.disk < D_UP_TO_DATE && os.pdsk < D_UP_TO_DATE))  in sanitize_state()
1318 	if ((os.disk != D_FAILED && ns.disk == D_FAILED) ||  in _drbd_set_state()
1319 	    (os.disk != D_DISKLESS && ns.disk == D_DISKLESS))  in _drbd_set_state()
1345 	if (os.disk == D_ATTACHING && ns.disk >= D_NEGOTIATING)  in _drbd_set_state()
1423 		if (device->state.disk > D_INCONSISTENT)  in _drbd_set_state()
1425 		if (device->state.disk > D_OUTDATED)  in _drbd_set_state()
1433 		if (os.disk < D_CONSISTENT && ns.disk >= D_CONSISTENT)  in _drbd_set_state()
1439 	if (os.disk == D_INCONSISTENT && os.pdsk == D_INCONSISTENT &&  in _drbd_set_state()
1465 	if ((os.disk == D_ATTACHING || os.disk == D_NEGOTIATING) &&  in _drbd_set_state()
1466 	    ns.disk > D_NEGOTIATING)  in _drbd_set_state()
1673 /* takes old and new peer disk state */
1715 	if ((os.disk != D_UP_TO_DATE || os.pdsk != D_UP_TO_DATE)  in after_state_ch()
1716 	&&  (ns.disk == D_UP_TO_DATE && ns.pdsk == D_UP_TO_DATE)) {  in after_state_ch()
1725 	if (!(os.role == R_PRIMARY && os.disk < D_UP_TO_DATE && os.pdsk < D_UP_TO_DATE) &&  in after_state_ch()
1726 	    (ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE))  in after_state_ch()
1739 		if ((os.disk == D_ATTACHING || os.disk == D_NEGOTIATING) &&  in after_state_ch()
1817 			    device->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {  in after_state_ch()
1831 		    device->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {  in after_state_ch()
1859 	    os.disk == D_ATTACHING && ns.disk == D_NEGOTIATING) {  in after_state_ch()
1894 	if (os.disk != D_FAILED && ns.disk == D_FAILED) {  in after_state_ch()
1916 			 * that waits for completion from the local disk,  in after_state_ch()
1934 			if (device->state.disk != D_FAILED)  in after_state_ch()
1936 					"ASSERT FAILED: disk is %s during detach\n",  in after_state_ch()
1937 					drbd_disk_str(device->state.disk));  in after_state_ch()
1955 	if (os.disk != D_DISKLESS && ns.disk == D_DISKLESS) {  in after_state_ch()
1958 		if (device->state.disk != D_DISKLESS)  in after_state_ch()
1960 				 "ASSERT FAILED: disk is %s while going diskless\n",  in after_state_ch()
1961 				 drbd_disk_str(device->state.disk));  in after_state_ch()
1971 	if (os.disk == D_UP_TO_DATE && ns.disk == D_INCONSISTENT && ns.conn >= C_CONNECTED)  in after_state_ch()
1975 	if (ns.disk > D_NEGOTIATING && ns.pdsk > D_NEGOTIATING &&  in after_state_ch()
1989 	if (os.disk < D_UP_TO_DATE && os.conn >= C_SYNC_SOURCE && ns.conn == C_CONNECTED)  in after_state_ch()
2000 	 * if the resync finished cleanly, or aborted because of peer disk  in after_state_ch()
2005 	 * For resync aborted because of local disk failure, we cannot do  in after_state_ch()
2017 	if (ns.disk == D_DISKLESS &&  in after_state_ch()
2113 		  .disk = D_DISKLESS,  in conn_old_common_state()
2137 		if (cs.disk != os.disk)  in conn_old_common_state()
2165 		if (flags & CS_IGN_OUTD_FAIL && ns.disk == D_OUTDATED && os.disk < D_OUTDATED)  in conn_is_valid_transition()
2166 			ns.disk = os.disk;  in conn_is_valid_transition()
2202 		  .disk = D_MASK,  in conn_set_state()
2227 		if (flags & CS_IGN_OUTD_FAIL && ns.disk == D_OUTDATED && os.disk < D_OUTDATED)  in conn_set_state()
2228 			ns.disk = os.disk;  in conn_set_state()
2236 		ns_max.disk = max_t(enum drbd_disk_state, ns.disk, ns_max.disk);  in conn_set_state()
2242 		ns_min.disk = min_t(enum drbd_disk_state, ns.disk, ns_min.disk);  in conn_set_state()
2252 				.disk = D_DISKLESS,  in conn_set_state()