393 	if (!mddev->pers->make_request(mddev, bio)) {  in md_handle_request()
407 	if (mddev == NULL || mddev->pers == NULL) {  in md_submit_bio()
452 	if (mddev->pers->prepare_suspend)  in mddev_suspend()
453 		mddev->pers->prepare_suspend(mddev);  in mddev_suspend()
783 			if (mddev->pers == NULL ||  in mddev_unlock()
784 			    mddev->pers->sync_request == NULL) {  in mddev_unlock()
849 	struct md_personality *pers;  in find_pers()  local
850 	list_for_each_entry(pers, &pers_list, list) {  in find_pers()
851 		if (level != LEVEL_NONE && pers->level == level)  in find_pers()
852 			return pers;  in find_pers()
853 		if (strcmp(pers->name, clevel)==0)  in find_pers()
854 			return pers;  in find_pers()
1137 		mdname(mddev), mddev->pers->name);  in md_check_no_bitmap()
1329 	} else if (mddev->pers == NULL) {  in super_90_validate()
1859 	} else if (mddev->pers == NULL) {  in super_1_validate()
2365 	if (rdev_read_only(rdev) && mddev->pers)  in bind_rdev_to_array()
2372 		if (mddev->pers) {  in bind_rdev_to_array()
2390 		if (mddev->pers)  in bind_rdev_to_array()
2791 	if (!mddev->pers->hot_remove_disk || add_journal) {  in add_bound_rdev()
2800 		err = mddev->pers->hot_add_disk(mddev, rdev);  in add_bound_rdev()
2909 	if (cmd_match(buf, "faulty") && rdev->mddev->pers) {  in state_store()
2917 		if (rdev->mddev->pers) {  in state_store()
2930 				if (mddev->pers) {  in state_store()
2979 		if (rdev->mddev->pers == NULL) {  in state_store()
3014 		if (rdev->mddev->pers)  in state_store()
3022 		if (rdev->mddev->pers)  in state_store()
3029 		if (!rdev->mddev->pers)  in state_store()
3113 	if (rdev->mddev->pers && slot == -1) {  in slot_store()
3124 		if (rdev->mddev->pers->hot_remove_disk == NULL)  in slot_store()
3132 	} else if (rdev->mddev->pers) {  in slot_store()
3144 		if (rdev->mddev->pers->hot_add_disk == NULL)  in slot_store()
3158 		err = rdev->mddev->pers->hot_add_disk(rdev->mddev, rdev);  in slot_store()
3196 	if (rdev->mddev->pers && rdev->raid_disk >= 0)  in offset_store()
3253 	if (mddev->pers && mddev->persistent &&  in new_offset_store()
3337 	if (my_mddev->pers && rdev->raid_disk >= 0) {  in rdev_size_store()
3346 		if (!my_mddev->pers->resize)  in rdev_size_store()
3396 	if (rdev->mddev->pers &&  in recovery_start_store()
3464 	if (rdev->mddev->pers && test_bit(MD_HAS_PPL, &rdev->mddev->flags) &&  in ppl_sector_store()
3501 	if (rdev->mddev->pers && test_bit(MD_HAS_PPL, &rdev->mddev->flags) &&  in ppl_size_store()
3850 	p = mddev->pers;  in level_show()
3869 	struct md_personality *pers, *oldpers;  in level_store()  local
3881 	if (mddev->pers == NULL) {  in level_store()
3908 	if (!mddev->pers->quiesce) {  in level_store()
3910 			mdname(mddev), mddev->pers->name);  in level_store()
3925 	pers = find_pers(level, clevel);  in level_store()
3926 	if (!pers || !try_module_get(pers->owner)) {  in level_store()
3934 	if (pers == mddev->pers) {  in level_store()
3936 		module_put(pers->owner);  in level_store()
3940 	if (!pers->takeover) {  in level_store()
3941 		module_put(pers->owner);  in level_store()
3954 	priv = pers->takeover(mddev);  in level_store()
3962 		module_put(pers->owner);  in level_store()
3974 	oldpers = mddev->pers;  in level_store()
3976 	mddev->pers = pers;  in level_store()
3978 	strscpy(mddev->clevel, pers->name, sizeof(mddev->clevel));  in level_store()
4004 	    pers->sync_request != NULL) {  in level_store()
4014 	    pers->sync_request == NULL) {  in level_store()
4046 	if (pers->sync_request == NULL) {  in level_store()
4054 	pers->run(mddev);  in level_store()
4094 	if (mddev->pers) {  in layout_store()
4095 		if (mddev->pers->check_reshape == NULL)  in layout_store()
4101 			err = mddev->pers->check_reshape(mddev);  in layout_store()
4143 	if (mddev->pers)  in raid_disks_store()
4203 	if (mddev->pers) {  in chunk_size_store()
4204 		if (mddev->pers->check_reshape == NULL)  in chunk_size_store()
4210 			err = mddev->pers->check_reshape(mddev);  in chunk_size_store()
4252 	if (mddev->pers && !test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))  in resync_start_store()
4257 		if (mddev->pers)  in resync_start_store()
4327 	if (mddev->pers && !test_bit(MD_NOT_READY, &mddev->flags)) {  in array_state_show()
4371 	if (mddev->pers && (st == active || st == clean) &&  in array_state_store()
4405 		if (mddev->pers)  in array_state_store()
4413 		if (mddev->pers)  in array_state_store()
4422 		if (mddev->pers) {  in array_state_store()
4437 		if (mddev->pers) {  in array_state_store()
4449 		if (mddev->pers) {  in array_state_store()
4633 	if (mddev->pers) {  in size_store()
4820 	if (!mddev->pers || !mddev->pers->sync_request)  in action_store()
4837 		if (mddev->pers->start_reshape == NULL)  in action_store()
4844 				   mddev->pers->check_reshape == NULL ||  in action_store()
4845 				   mddev->pers->check_reshape(mddev)) {  in action_store()
4847 				err = mddev->pers->start_reshape(mddev);  in action_store()
5150 	if (mddev->pers == NULL ||  in suspend_lo_store()
5151 	    mddev->pers->quiesce == NULL)  in suspend_lo_store()
5187 	if (mddev->pers == NULL)  in suspend_hi_store()
5228 	if (mddev->pers)  in reshape_position_store()
5316 		if (mddev->pers)  in array_size_store()
5317 			sectors = mddev->pers->size(mddev, 0, 0);  in array_size_store()
5325 		else if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors)  in array_size_store()
5333 		if (mddev->pers)  in array_size_store()
5356 	} else if (mddev->pers) {  in consistency_policy_show()
5357 		if (mddev->pers->sync_request)  in consistency_policy_show()
5373 	if (mddev->pers) {  in consistency_policy_store()
5374 		if (mddev->pers->change_consistency_policy)  in consistency_policy_store()
5375 			err = mddev->pers->change_consistency_policy(mddev, buf);  in consistency_policy_store()
5421 	if (mddev->pers == NULL || (mddev->pers->level != 1))  in serialize_policy_show()
5447 	if (mddev->pers == NULL || (mddev->pers->level != 1)) {  in serialize_policy_store()
5797 	struct md_personality *pers;  in md_run()  local
5804 	if (mddev->pers)  in md_run()
5896 	pers = find_pers(mddev->level, mddev->clevel);  in md_run()
5897 	if (!pers || !try_module_get(pers->owner)) {  in md_run()
5909 	if (mddev->level != pers->level) {  in md_run()
5910 		mddev->level = pers->level;  in md_run()
5911 		mddev->new_level = pers->level;  in md_run()
5913 	strscpy(mddev->clevel, pers->name, sizeof(mddev->clevel));  in md_run()
5916 	    pers->start_reshape == NULL) {  in md_run()
5918 		module_put(pers->owner);  in md_run()
5923 	if (pers->sync_request) {  in md_run()
5956 	err = pers->run(mddev);  in md_run()
5959 	else if (pers->size(mddev, 0, 0) < mddev->array_sectors) {  in md_run()
5965 			(unsigned long long)pers->size(mddev, 0, 0) / 2);  in md_run()
5968 	if (err == 0 && pers->sync_request &&  in md_run()
6024 	if (pers->sync_request) {  in md_run()
6045 	mddev->pers = pers;  in md_run()
6067 		pers->free(mddev, mddev->private);  in md_run()
6069 	module_put(pers->owner);  in md_run()
6122 	if (mddev->pers->start) {  in md_start()
6125 		ret = mddev->pers->start(mddev);  in md_start()
6143 	if (!mddev->pers)  in restart_array()
6236 	if (mddev->pers && mddev->pers->quiesce) {  in __md_stop_writes()
6237 		mddev->pers->quiesce(mddev, 1);  in __md_stop_writes()
6238 		mddev->pers->quiesce(mddev, 0);  in __md_stop_writes()
6266 	if (mddev->pers && mddev->pers->quiesce && !is_md_suspended(mddev)) {  in mddev_detach()
6267 		mddev->pers->quiesce(mddev, 1);  in mddev_detach()
6268 		mddev->pers->quiesce(mddev, 0);  in mddev_detach()
6277 	struct md_personality *pers = mddev->pers;  in __md_stop()  local
6284 	mddev->pers = NULL;  in __md_stop()
6287 		pers->free(mddev, mddev->private);  in __md_stop()
6289 	if (pers->sync_request && mddev->to_remove == NULL)  in __md_stop()
6291 	module_put(pers->owner);  in __md_stop()
6343 	if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||  in md_set_readonly()
6355 	if (mddev->pers) {  in md_set_readonly()
6406 	if ((mddev->pers && atomic_read(&mddev->openers) > !!bdev) ||  in do_md_stop()
6419 	if (mddev->pers) {  in do_md_stop()
6772 	if (mddev->pers) {  in md_add_new_disk()
6774 		if (!mddev->pers->hot_add_disk) {  in md_add_new_disk()
6932 	if (!mddev->pers)  in hot_remove_disk()
6974 	if (!mddev->pers)  in hot_add_disk()
6982 	if (!mddev->pers->hot_add_disk) {  in hot_add_disk()
7053 	if (mddev->pers) {  in set_bitmap_file()
7054 		if (!mddev->pers->quiesce || !mddev->thread)  in set_bitmap_file()
7107 	if (mddev->pers) {  in set_bitmap_file()
7247 	if (mddev->pers->resize == NULL)  in update_size()
7272 	rv = mddev->pers->resize(mddev, num_sectors);  in update_size()
7289 	if (mddev->pers->check_reshape == NULL)  in update_raid_disks()
7317 	rv = mddev->pers->check_reshape(mddev);  in update_raid_disks()
7374 		if (mddev->pers->check_reshape == NULL)  in update_array_info()
7378 			rv = mddev->pers->check_reshape(mddev);  in update_array_info()
7391 		if (mddev->pers->quiesce == NULL || mddev->thread == NULL) {  in update_array_info()
7465 	if (mddev->pers == NULL)  in set_disk_faulty()
7531 	if (mddev->pers) {  in __md_set_array_info()
7635 		if (mddev->pers && atomic_read(&mddev->openers) > 1) {  in md_ioctl()
7699 		if (mddev->pers) {  in md_ioctl()
7717 	if (!md_is_rdwr(mddev) && mddev->pers) {  in md_ioctl()
7821 	if (!ro && mddev->ro == MD_RDONLY && mddev->pers) {  in md_set_read_only()
8026 	if (!mddev->pers || !mddev->pers->error_handler)  in md_error()
8028 	mddev->pers->error_handler(mddev, rdev);  in md_error()
8030 	if (mddev->pers->level == 0 || mddev->pers->level == LEVEL_LINEAR)  in md_error()
8288 		struct md_personality *pers;  in md_seq_show()  local
8291 		list_for_each_entry(pers, &pers_list, list)  in md_seq_show()
8292 			seq_printf(seq, "[%s] ", pers->name);  in md_seq_show()
8305 	if (mddev->pers || mddev->raid_disks || !list_empty(&mddev->disks)) {  in md_seq_show()
8307 						mddev->pers ? "" : "in");  in md_seq_show()
8308 		if (mddev->pers) {  in md_seq_show()
8313 			seq_printf(seq, " %s", mddev->pers->name);  in md_seq_show()
8338 			if (mddev->pers)  in md_seq_show()
8359 		if (mddev->pers) {  in md_seq_show()
8360 			mddev->pers->status(seq, mddev);  in md_seq_show()
8362 			if (mddev->pers->sync_request) {  in md_seq_show()
8715 	if (!mddev->pers)  in md_allow_write()
8719 	if (!mddev->pers->sync_request)  in md_allow_write()
8912 			mddev->pers->quiesce(mddev, 1);  in md_do_sync()
8913 			mddev->pers->quiesce(mddev, 0);  in md_do_sync()
8997 		sectors = mddev->pers->sync_request(mddev, j, &skipped);  in md_do_sync()
9087 	mddev->pers->sync_request(mddev, max_sectors, &skipped);  in md_do_sync()
9134 			mddev->pers->finish_reshape &&  in md_do_sync()
9135 			mddev->pers->size &&  in md_do_sync()
9138 		md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));  in md_do_sync()
9202 			if (mddev->pers->hot_remove_disk(  in remove_and_add_spares()
9242 		if (mddev->pers->hot_add_disk(mddev, rdev) == 0) {  in remove_and_add_spares()
9326 		if (mddev->pers->sync_request && !mddev->external) {  in md_check_recovery()
9446 			if (mddev->pers->check_reshape == NULL ||  in md_check_recovery()
9447 			    mddev->pers->check_reshape(mddev) != 0)  in md_check_recovery()
9464 		if (mddev->pers->sync_request) {  in md_check_recovery()
9507 		if (mddev->pers->spare_active(mddev)) {  in md_reap_sync_thread()
9513 	    mddev->pers->finish_reshape) {  in md_reap_sync_thread()
9514 		mddev->pers->finish_reshape(mddev);  in md_reap_sync_thread()
9637 			if (mddev->pers)  in md_notify_reboot()
9729 		ret = mddev->pers->resize(mddev, le64_to_cpu(sb->size));  in check_sb_changes()
9801 		if (mddev->pers->update_reshape_pos)  in check_sb_changes()
9802 			mddev->pers->update_reshape_pos(mddev);  in check_sb_changes()
9803 		if (mddev->pers->start_reshape)  in check_sb_changes()
9804 			mddev->pers->start_reshape(mddev);  in check_sb_changes()
9810 		if (mddev->pers->update_reshape_pos)  in check_sb_changes()
9811 			mddev->pers->update_reshape_pos(mddev);  in check_sb_changes()
9858 	    mddev->pers->spare_active(mddev))  in read_rdev()