418 	if (!mddev->pers->make_request(mddev, bio)) {  in md_handle_request()
420 		if (!mddev->gendisk && mddev->pers->prepare_suspend)  in md_handle_request()
435 	if (mddev == NULL || mddev->pers == NULL) {  in md_submit_bio()
553 	if (mddev->pers && atomic_read(&mddev->openers) > opener_num) {  in mddev_set_closing_and_sync_blockdev()
937 			if (mddev->pers == NULL ||  in mddev_unlock()
938 			    mddev->pers->sync_request == NULL) {  in mddev_unlock()
1048 static void put_pers(struct md_personality *pers)  in put_pers()  argument
1050 	module_put(pers->head.owner);  in put_pers()
1344 		mdname(mddev), mddev->pers->head.name);  in md_check_no_bitmap()
1546 	} else if (mddev->pers == NULL) {  in super_90_validate()
2076 	} else if (mddev->pers == NULL) {  in super_1_validate()
2106 	} else if (mddev->pers == NULL && freshest && ev1 < mddev->events) {  in super_1_validate()
2554 	if (rdev_read_only(rdev) && mddev->pers)  in bind_rdev_to_array()
2561 		if (mddev->pers) {  in bind_rdev_to_array()
2579 		if (mddev->pers)  in bind_rdev_to_array()
2976 	if (!mddev->pers->hot_remove_disk || add_journal) {  in add_bound_rdev()
2983 		err = mddev->pers->hot_add_disk(mddev, rdev);  in add_bound_rdev()
3089 	if (cmd_match(buf, "faulty") && rdev->mddev->pers) {  in state_store()
3097 		if (rdev->mddev->pers) {  in state_store()
3110 				if (mddev->pers)  in state_store()
3156 		if (rdev->mddev->pers == NULL) {  in state_store()
3190 		if (rdev->mddev->pers)  in state_store()
3198 		if (rdev->mddev->pers)  in state_store()
3205 		if (!rdev->mddev->pers)  in state_store()
3289 	if (rdev->mddev->pers && slot == -1) {  in slot_store()
3300 		if (rdev->mddev->pers->hot_remove_disk == NULL)  in slot_store()
3307 	} else if (rdev->mddev->pers) {  in slot_store()
3319 		if (rdev->mddev->pers->hot_add_disk == NULL)  in slot_store()
3333 		err = rdev->mddev->pers->hot_add_disk(rdev->mddev, rdev);  in slot_store()
3371 	if (rdev->mddev->pers && rdev->raid_disk >= 0)  in offset_store()
3427 	if (mddev->pers && mddev->persistent &&  in new_offset_store()
3511 	if (my_mddev->pers && rdev->raid_disk >= 0) {  in rdev_size_store()
3520 		if (!my_mddev->pers->resize)  in rdev_size_store()
3570 	if (rdev->mddev->pers &&  in recovery_start_store()
3638 	if (rdev->mddev->pers && test_bit(MD_HAS_PPL, &rdev->mddev->flags) &&  in ppl_sector_store()
3675 	if (rdev->mddev->pers && test_bit(MD_HAS_PPL, &rdev->mddev->flags) &&  in ppl_size_store()
4019 	p = mddev->pers;  in level_show()
4038 	struct md_personality *pers, *oldpers;  in level_store()  local
4050 	if (mddev->pers == NULL) {  in level_store()
4076 	if (!mddev->pers->quiesce) {  in level_store()
4078 			mdname(mddev), mddev->pers->head.name);  in level_store()
4092 	pers = get_pers(level, clevel);  in level_store()
4093 	if (!pers) {  in level_store()
4098 	if (pers == mddev->pers) {  in level_store()
4100 		put_pers(pers);  in level_store()
4104 	if (!pers->takeover) {  in level_store()
4105 		put_pers(pers);  in level_store()
4118 	priv = pers->takeover(mddev);  in level_store()
4126 		put_pers(pers);  in level_store()
4137 	oldpers = mddev->pers;  in level_store()
4139 	mddev->pers = pers;  in level_store()
4141 	strscpy(mddev->clevel, pers->head.name, sizeof(mddev->clevel));  in level_store()
4167 	    pers->sync_request != NULL) {  in level_store()
4177 	    pers->sync_request == NULL) {  in level_store()
4209 	if (pers->sync_request == NULL) {  in level_store()
4216 	pers->run(mddev);  in level_store()
4363 	if (mddev->pers) {  in layout_store()
4364 		if (mddev->pers->check_reshape == NULL)  in layout_store()
4370 			err = mddev->pers->check_reshape(mddev);  in layout_store()
4412 	if (mddev->pers)  in raid_disks_store()
4472 	if (mddev->pers) {  in chunk_size_store()
4473 		if (mddev->pers->check_reshape == NULL)  in chunk_size_store()
4479 			err = mddev->pers->check_reshape(mddev);  in chunk_size_store()
4521 	if (mddev->pers && !test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))  in resync_start_store()
4526 		if (mddev->pers)  in resync_start_store()
4596 	if (mddev->pers && !test_bit(MD_NOT_READY, &mddev->flags)) {  in array_state_show()
4652 		if (!mddev->pers || !md_is_rdwr(mddev))  in array_state_store()
4663 	if (mddev->pers && (st == active || st == clean) &&  in array_state_store()
4691 		if (mddev->pers)  in array_state_store()
4698 		if (mddev->pers)  in array_state_store()
4707 		if (mddev->pers) {  in array_state_store()
4722 		if (mddev->pers) {  in array_state_store()
4734 		if (mddev->pers) {  in array_state_store()
4930 	if (mddev->pers) {  in size_store()
5221 	if (mddev->pers->start_reshape == NULL)  in mddev_start_reshape()
5225 	    mddev->pers->check_reshape == NULL ||  in mddev_start_reshape()
5226 	    mddev->pers->check_reshape(mddev)) {  in mddev_start_reshape()
5228 		ret = mddev->pers->start_reshape(mddev);  in mddev_start_reshape()
5250 	if (!mddev->pers || !mddev->pers->sync_request)  in action_store()
5702 	if (mddev->pers)  in reshape_position_store()
5790 		if (mddev->pers)  in array_size_store()
5791 			sectors = mddev->pers->size(mddev, 0, 0);  in array_size_store()
5799 		else if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors)  in array_size_store()
5807 		if (mddev->pers)  in array_size_store()
5830 	} else if (mddev->pers) {  in consistency_policy_show()
5831 		if (mddev->pers->sync_request)  in consistency_policy_show()
5847 	if (mddev->pers) {  in consistency_policy_store()
5848 		if (mddev->pers->change_consistency_policy)  in consistency_policy_store()
5849 			err = mddev->pers->change_consistency_policy(mddev, buf);  in consistency_policy_store()
5895 	if (mddev->pers == NULL || (mddev->pers->head.id != ID_RAID1))  in serialize_policy_show()
5921 	if (mddev->pers == NULL || (mddev->pers->head.id != ID_RAID1)) {  in serialize_policy_store()
5987 	if (mddev->pers) {  in lbs_store()
6471 	struct md_personality *pers;  in md_run()  local
6478 	if (mddev->pers)  in md_run()
6546 	pers = get_pers(mddev->level, mddev->clevel);  in md_run()
6547 	if (!pers)  in md_run()
6549 	if (mddev->level != pers->head.id) {  in md_run()
6550 		mddev->level = pers->head.id;  in md_run()
6551 		mddev->new_level = pers->head.id;  in md_run()
6553 	strscpy(mddev->clevel, pers->head.name, sizeof(mddev->clevel));  in md_run()
6556 	    pers->start_reshape == NULL) {  in md_run()
6558 		put_pers(pers);  in md_run()
6562 	if (pers->sync_request) {  in md_run()
6598 	err = pers->run(mddev);  in md_run()
6601 	else if (pers->size(mddev, 0, 0) < mddev->array_sectors) {  in md_run()
6607 			(unsigned long long)pers->size(mddev, 0, 0) / 2);  in md_run()
6610 	if (err == 0 && pers->sync_request &&  in md_run()
6639 	if (pers->sync_request) {  in md_run()
6660 	mddev->pers = pers;  in md_run()
6682 		pers->free(mddev, mddev->private);  in md_run()
6684 	put_pers(pers);  in md_run()
6731 	if (mddev->pers->start) {  in md_start()
6733 		ret = mddev->pers->start(mddev);  in md_start()
6751 	if (!mddev->pers)  in restart_array()
6851 	if (mddev->pers && mddev->pers->quiesce) {  in __md_stop_writes()
6852 		mddev->pers->quiesce(mddev, 1);  in __md_stop_writes()
6853 		mddev->pers->quiesce(mddev, 0);  in __md_stop_writes()
6886 	if (mddev->pers && mddev->pers->quiesce && !is_md_suspended(mddev)) {  in mddev_detach()
6887 		mddev->pers->quiesce(mddev, 1);  in mddev_detach()
6888 		mddev->pers->quiesce(mddev, 0);  in mddev_detach()
6899 	struct md_personality *pers = mddev->pers;  in __md_stop()  local
6904 	mddev->pers = NULL;  in __md_stop()
6907 		pers->free(mddev, mddev->private);  in __md_stop()
6909 	put_pers(pers);  in __md_stop()
6997 	if (mddev->pers) {  in do_md_stop()
7001 		if (mode == 2 && mddev->pers->sync_request &&  in do_md_stop()
7351 	if (mddev->pers) {  in md_add_new_disk()
7353 		if (!mddev->pers->hot_add_disk) {  in md_add_new_disk()
7511 	if (!mddev->pers)  in hot_remove_disk()
7550 	if (!mddev->pers)  in hot_add_disk()
7558 	if (!mddev->pers->hot_add_disk) {  in hot_add_disk()
7622 	if (mddev->pers) {  in set_bitmap_file()
7623 		if (!mddev->pers->quiesce || !mddev->thread)  in set_bitmap_file()
7676 	if (mddev->pers) {  in set_bitmap_file()
7809 	if (mddev->pers->resize == NULL)  in update_size()
7833 	rv = mddev->pers->resize(mddev, num_sectors);  in update_size()
7849 	if (mddev->pers->check_reshape == NULL)  in update_raid_disks()
7876 	rv = mddev->pers->check_reshape(mddev);  in update_raid_disks()
7955 		if (mddev->pers->check_reshape == NULL)  in update_array_info()
7959 			rv = mddev->pers->check_reshape(mddev);  in update_array_info()
7972 		if (mddev->pers->quiesce == NULL || mddev->thread == NULL) {  in update_array_info()
8040 	if (mddev->pers == NULL)  in set_disk_faulty()
8123 	if (mddev->pers) {  in __md_set_array_info()
8241 		if (mddev->pers)  in md_ioctl()
8254 		if (mddev->pers) {  in md_ioctl()
8272 	if (!md_is_rdwr(mddev) && mddev->pers) {  in md_ioctl()
8379 	if (!ro && mddev->ro == MD_RDONLY && mddev->pers) {  in md_set_read_only()
8582 	if (!mddev->pers || !mddev->pers->error_handler)  in md_error()
8584 	mddev->pers->error_handler(mddev, rdev);  in md_error()
8586 	if (mddev->pers->head.id == ID_RAID0 ||  in md_error()
8587 	    mddev->pers->head.id == ID_LINEAR)  in md_error()
8850 	if (mddev->pers || mddev->raid_disks || !list_empty(&mddev->disks)) {  in md_seq_show()
8852 		if (mddev->pers) {  in md_seq_show()
8861 			seq_printf(seq, " %s", mddev->pers->head.name);  in md_seq_show()
8888 			if (mddev->pers)  in md_seq_show()
8909 		if (mddev->pers) {  in md_seq_show()
8910 			mddev->pers->status(seq, mddev);  in md_seq_show()
8912 			if (mddev->pers->sync_request) {  in md_seq_show()
9193 	if (mddev->pers->bitmap_sector)  in md_bitmap_start()
9194 		mddev->pers->bitmap_sector(mddev, &md_io_clone->offset,  in md_bitmap_start()
9289 	if (!mddev->pers)  in md_allow_write()
9293 	if (!mddev->pers->sync_request)  in md_allow_write()
9414 			mddev->pers->quiesce(mddev, 1);  in md_sync_position()
9415 			mddev->pers->quiesce(mddev, 0);  in md_sync_position()
9646 		sectors = mddev->pers->sync_request(mddev, j, max_sectors,  in md_do_sync()
9739 	mddev->pers->sync_request(mddev, max_sectors, max_sectors, &skipped);  in md_do_sync()
9782 			mddev->pers->finish_reshape &&  in md_do_sync()
9783 			mddev->pers->size &&  in md_do_sync()
9786 		md_set_array_sectors(mddev, mddev->pers->size(mddev, 0, 0));  in md_do_sync()
9908 		    !mddev->pers->hot_remove_disk(mddev, rdev)) {  in remove_spares()
9946 		if (mddev->pers->hot_add_disk(mddev, rdev) == 0) {  in remove_and_add_spares()
9965 		if (mddev->pers->check_reshape == NULL ||  in md_choose_sync_action()
9966 		    mddev->pers->check_reshape(mddev) != 0)  in md_choose_sync_action()
10041 	if (!mddev->pers->sync_request)  in md_start_sync()
10186 		if (mddev->pers->sync_request && !mddev->external) {  in md_check_recovery()
10318 		if (mddev->pers->spare_active(mddev)) {  in md_reap_sync_thread()
10324 	    mddev->pers->finish_reshape) {  in md_reap_sync_thread()
10325 		mddev->pers->finish_reshape(mddev);  in md_reap_sync_thread()
10457 			if (mddev->pers)  in md_notify_reboot()
10543 		ret = mddev->pers->resize(mddev, le64_to_cpu(sb->size));  in check_sb_changes()
10628 		if (mddev->pers->update_reshape_pos)  in check_sb_changes()
10629 			mddev->pers->update_reshape_pos(mddev);  in check_sb_changes()
10630 		if (mddev->pers->start_reshape)  in check_sb_changes()
10631 			mddev->pers->start_reshape(mddev);  in check_sb_changes()
10637 		if (mddev->pers->update_reshape_pos)  in check_sb_changes()
10638 			mddev->pers->update_reshape_pos(mddev);  in check_sb_changes()
10685 	    mddev->pers->spare_active(mddev))  in read_rdev()