433 	if (!mddev->pers->make_request(mddev, bio)) {  in md_handle_request()
449 	if (mddev == NULL || mddev->pers == NULL) {  in md_submit_bio()
493 	mddev->pers->quiesce(mddev, 1);  in mddev_suspend()
511 	mddev->pers->quiesce(mddev, 0);  in mddev_resume()
813 			if (mddev->pers == NULL ||  in mddev_unlock()
814 			    mddev->pers->sync_request == NULL) {  in mddev_unlock()
878 	struct md_personality *pers;  in find_pers()  local
879 	list_for_each_entry(pers, &pers_list, list) {  in find_pers()
880 		if (level != LEVEL_NONE && pers->level == level)  in find_pers()
881 			return pers;  in find_pers()
882 		if (strcmp(pers->name, clevel)==0)  in find_pers()
883 			return pers;  in find_pers()
1169 		mdname(mddev), mddev->pers->name);  in md_check_no_bitmap()
1362 	} else if (mddev->pers == NULL) {  in super_90_validate()
1895 	} else if (mddev->pers == NULL) {  in super_1_validate()
2402 	if (rdev_read_only(rdev) && mddev->pers)  in bind_rdev_to_array()
2409 		if (mddev->pers) {  in bind_rdev_to_array()
2427 		if (mddev->pers)  in bind_rdev_to_array()
2866 	if (!mddev->pers->hot_remove_disk || add_journal) {  in add_bound_rdev()
2875 		err = mddev->pers->hot_add_disk(mddev, rdev);  in add_bound_rdev()
2980 	if (cmd_match(buf, "faulty") && rdev->mddev->pers) {  in state_store()
2987 		if (rdev->mddev->pers) {  in state_store()
3001 				if (mddev->pers) {  in state_store()
3046 		if (rdev->mddev->pers == NULL) {  in state_store()
3081 		if (rdev->mddev->pers)  in state_store()
3089 		if (rdev->mddev->pers)  in state_store()
3096 		if (!rdev->mddev->pers)  in state_store()
3175 	if (rdev->mddev->pers && slot == -1) {  in slot_store()
3186 		if (rdev->mddev->pers->hot_remove_disk == NULL)  in slot_store()
3194 	} else if (rdev->mddev->pers) {  in slot_store()
3206 		if (rdev->mddev->pers->hot_add_disk == NULL)  in slot_store()
3220 		err = rdev->mddev->pers->hot_add_disk(rdev->mddev, rdev);  in slot_store()
3258 	if (rdev->mddev->pers && rdev->raid_disk >= 0)  in offset_store()
3315 	if (mddev->pers && mddev->persistent &&  in new_offset_store()
3378 	if (my_mddev->pers && rdev->raid_disk >= 0) {  in rdev_size_store()
3387 		if (!my_mddev->pers->resize)  in rdev_size_store()
3462 	if (rdev->mddev->pers &&  in recovery_start_store()
3530 	if (rdev->mddev->pers && test_bit(MD_HAS_PPL, &rdev->mddev->flags) &&  in ppl_sector_store()
3567 	if (rdev->mddev->pers && test_bit(MD_HAS_PPL, &rdev->mddev->flags) &&  in ppl_size_store()
3892 	p = mddev->pers;  in level_show()
3911 	struct md_personality *pers, *oldpers;  in level_store()  local
3923 	if (mddev->pers == NULL) {  in level_store()
3950 	if (!mddev->pers->quiesce) {  in level_store()
3952 			mdname(mddev), mddev->pers->name);  in level_store()
3967 	pers = find_pers(level, clevel);  in level_store()
3968 	if (!pers || !try_module_get(pers->owner)) {  in level_store()
3976 	if (pers == mddev->pers) {  in level_store()
3978 		module_put(pers->owner);  in level_store()
3982 	if (!pers->takeover) {  in level_store()
3983 		module_put(pers->owner);  in level_store()
3996 	priv = pers->takeover(mddev);  in level_store()
4004 		module_put(pers->owner);  in level_store()
4016 	oldpers = mddev->pers;  in level_store()
4018 	mddev->pers = pers;  in level_store()
4020 	strlcpy(mddev->clevel, pers->name, sizeof(mddev->clevel));  in level_store()
4046 	    pers->sync_request != NULL) {  in level_store()
4056 	    pers->sync_request == NULL) {  in level_store()
4088 	if (pers->sync_request == NULL) {  in level_store()
4096 	pers->run(mddev);  in level_store()
4136 	if (mddev->pers) {  in layout_store()
4137 		if (mddev->pers->check_reshape == NULL)  in layout_store()
4143 			err = mddev->pers->check_reshape(mddev);  in layout_store()
4185 	if (mddev->pers)  in raid_disks_store()
4245 	if (mddev->pers) {  in chunk_size_store()
4246 		if (mddev->pers->check_reshape == NULL)  in chunk_size_store()
4252 			err = mddev->pers->check_reshape(mddev);  in chunk_size_store()
4294 	if (mddev->pers && !test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))  in resync_start_store()
4299 		if (mddev->pers)  in resync_start_store()
4370 	if (mddev->pers && !test_bit(MD_NOT_READY, &mddev->flags)) {  in array_state_show()
4414 	if (mddev->pers && (st == active || st == clean) && mddev->ro != 1) {  in array_state_store()
4447 		if (mddev->pers)  in array_state_store()
4455 		if (mddev->pers)  in array_state_store()
4464 		if (mddev->pers) {  in array_state_store()
4479 		if (mddev->pers) {  in array_state_store()
4491 		if (mddev->pers) {  in array_state_store()
4688 	if (mddev->pers) {  in size_store()
4819 	if (!mddev->pers || !mddev->pers->sync_request)  in action_store()
4847 		if (mddev->pers->start_reshape == NULL)  in action_store()
4855 				err = mddev->pers->start_reshape(mddev);  in action_store()
5151 	if (mddev->pers == NULL ||  in suspend_lo_store()
5152 	    mddev->pers->quiesce == NULL)  in suspend_lo_store()
5188 	if (mddev->pers == NULL)  in suspend_hi_store()
5229 	if (mddev->pers)  in reshape_position_store()
5317 		if (mddev->pers)  in array_size_store()
5318 			sectors = mddev->pers->size(mddev, 0, 0);  in array_size_store()
5326 		else if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors)  in array_size_store()
5334 		if (mddev->pers)  in array_size_store()
5357 	} else if (mddev->pers) {  in consistency_policy_show()
5358 		if (mddev->pers->sync_request)  in consistency_policy_show()
5374 	if (mddev->pers) {  in consistency_policy_store()
5375 		if (mddev->pers->change_consistency_policy)  in consistency_policy_store()
5376 			err = mddev->pers->change_consistency_policy(mddev, buf);  in consistency_policy_store()
5422 	if (mddev->pers == NULL || (mddev->pers->level != 1))  in serialize_policy_show()
5448 	if (mddev->pers == NULL || (mddev->pers->level != 1)) {  in serialize_policy_store()
5782 	struct md_personality *pers;  in md_run()  local
5788 	if (mddev->pers)  in md_run()
5874 	pers = find_pers(mddev->level, mddev->clevel);  in md_run()
5875 	if (!pers || !try_module_get(pers->owner)) {  in md_run()
5887 	if (mddev->level != pers->level) {  in md_run()
5888 		mddev->level = pers->level;  in md_run()
5889 		mddev->new_level = pers->level;  in md_run()
5891 	strlcpy(mddev->clevel, pers->name, sizeof(mddev->clevel));  in md_run()
5894 	    pers->start_reshape == NULL) {  in md_run()
5896 		module_put(pers->owner);  in md_run()
5901 	if (pers->sync_request) {  in md_run()
5935 	err = pers->run(mddev);  in md_run()
5938 	else if (pers->size(mddev, 0, 0) < mddev->array_sectors) {  in md_run()
5944 			(unsigned long long)pers->size(mddev, 0, 0) / 2);  in md_run()
5947 	if (err == 0 && pers->sync_request &&  in md_run()
6000 	if (pers->sync_request) {  in md_run()
6021 	mddev->pers = pers;  in md_run()
6043 		pers->free(mddev, mddev->private);  in md_run()
6045 	module_put(pers->owner);  in md_run()
6097 	if (mddev->pers->start) {  in md_start()
6100 		ret = mddev->pers->start(mddev);  in md_start()
6118 	if (!mddev->pers)  in restart_array()
6211 	if (mddev->pers && mddev->pers->quiesce) {  in __md_stop_writes()
6212 		mddev->pers->quiesce(mddev, 1);  in __md_stop_writes()
6213 		mddev->pers->quiesce(mddev, 0);  in __md_stop_writes()
6241 	if (mddev->pers && mddev->pers->quiesce && !mddev->suspended) {  in mddev_detach()
6242 		mddev->pers->quiesce(mddev, 1);  in mddev_detach()
6243 		mddev->pers->quiesce(mddev, 0);  in mddev_detach()
6252 	struct md_personality *pers = mddev->pers;  in __md_stop()  local
6259 	mddev->pers = NULL;  in __md_stop()
6261 	pers->free(mddev, mddev->private);  in __md_stop()
6263 	if (pers->sync_request && mddev->to_remove == NULL)  in __md_stop()
6265 	module_put(pers->owner);  in __md_stop()
6310 	if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||  in md_set_readonly()
6322 	if (mddev->pers) {  in md_set_readonly()
6371 	if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||  in do_md_stop()
6384 	if (mddev->pers) {  in do_md_stop()
6741 	if (mddev->pers) {  in md_add_new_disk()
6743 		if (!mddev->pers->hot_add_disk) {  in md_add_new_disk()
6903 	if (!mddev->pers)  in hot_remove_disk()
6946 	if (!mddev->pers)  in hot_add_disk()
6954 	if (!mddev->pers->hot_add_disk) {  in hot_add_disk()
7016 	if (mddev->pers) {  in set_bitmap_file()
7017 		if (!mddev->pers->quiesce || !mddev->thread)  in set_bitmap_file()
7061 	if (mddev->pers) {  in set_bitmap_file()
7201 	if (mddev->pers->resize == NULL)  in update_size()
7226 	rv = mddev->pers->resize(mddev, num_sectors);  in update_size()
7243 	if (mddev->pers->check_reshape == NULL)  in update_raid_disks()
7271 	rv = mddev->pers->check_reshape(mddev);  in update_raid_disks()
7328 		if (mddev->pers->check_reshape == NULL)  in update_array_info()
7332 			rv = mddev->pers->check_reshape(mddev);  in update_array_info()
7345 		if (mddev->pers->quiesce == NULL || mddev->thread == NULL) {  in update_array_info()
7419 	if (mddev->pers == NULL)  in set_disk_faulty()
7558 		if (mddev->pers && atomic_read(&mddev->openers) > 1) {  in md_ioctl()
7587 		if (mddev->pers) {  in md_ioctl()
7651 		if (mddev->pers) {  in md_ioctl()
7669 	if (mddev->ro && mddev->pers) {  in md_ioctl()
7774 	if (!ro && mddev->ro == 1 && mddev->pers) {  in md_set_read_only()
7967 	if (!mddev->pers || !mddev->pers->error_handler)  in md_error()
7969 	mddev->pers->error_handler(mddev,rdev);  in md_error()
8204 		struct md_personality *pers;  in md_seq_show()  local
8207 		list_for_each_entry(pers, &pers_list, list)  in md_seq_show()
8208 			seq_printf(seq, "[%s] ", pers->name);  in md_seq_show()
8221 	if (mddev->pers || mddev->raid_disks || !list_empty(&mddev->disks)) {  in md_seq_show()
8223 						mddev->pers ? "" : "in");  in md_seq_show()
8224 		if (mddev->pers) {  in md_seq_show()
8229 			seq_printf(seq, " %s", mddev->pers->name);  in md_seq_show()
8255 			if (mddev->pers)  in md_seq_show()
8276 		if (mddev->pers) {  in md_seq_show()
8277 			mddev->pers->status(seq, mddev);  in md_seq_show()
8279 			if (mddev->pers->sync_request) {  in md_seq_show()
8626 	if (!mddev->pers)  in md_allow_write()
8630 	if (!mddev->pers->sync_request)  in md_allow_write()
8823 			mddev->pers->quiesce(mddev, 1);  in md_do_sync()
8824 			mddev->pers->quiesce(mddev, 0);  in md_do_sync()
8908 		sectors = mddev->pers->sync_request(mddev, j, &skipped);  in md_do_sync()
8998 	mddev->pers->sync_request(mddev, max_sectors, &skipped);  in md_do_sync()
9045 			mddev->pers->finish_reshape &&  in md_do_sync()
9046 			mddev->pers->size &&  in md_do_sync()
9049 		md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));  in md_do_sync()
9112 			if (mddev->pers->hot_remove_disk(  in remove_and_add_spares()
9152 		if (mddev->pers->hot_add_disk(mddev, rdev) == 0) {  in remove_and_add_spares()
9237 		if (mddev->pers->sync_request && !mddev->external) {  in md_check_recovery()
9348 			if (mddev->pers->check_reshape == NULL ||  in md_check_recovery()
9349 			    mddev->pers->check_reshape(mddev) != 0)  in md_check_recovery()
9366 		if (mddev->pers->sync_request) {  in md_check_recovery()
9407 		if (mddev->pers->spare_active(mddev)) {  in md_reap_sync_thread()
9413 	    mddev->pers->finish_reshape) {  in md_reap_sync_thread()
9414 		mddev->pers->finish_reshape(mddev);  in md_reap_sync_thread()
9533 			if (mddev->pers)  in md_notify_reboot()
9621 		ret = mddev->pers->resize(mddev, le64_to_cpu(sb->size));  in check_sb_changes()
9691 		if (mddev->pers->update_reshape_pos)  in check_sb_changes()
9692 			mddev->pers->update_reshape_pos(mddev);  in check_sb_changes()
9693 		if (mddev->pers->start_reshape)  in check_sb_changes()
9694 			mddev->pers->start_reshape(mddev);  in check_sb_changes()
9700 		if (mddev->pers->update_reshape_pos)  in check_sb_changes()
9701 			mddev->pers->update_reshape_pos(mddev);  in check_sb_changes()
9748 	    mddev->pers->spare_active(mddev))  in read_rdev()