739 	struct dm_thin_device *td, *tmp;  in __write_changed_details()  local
743 	list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) {  in __write_changed_details()
744 		if (!td->changed)  in __write_changed_details()
747 		key = td->id;  in __write_changed_details()
749 		details.mapped_blocks = cpu_to_le64(td->mapped_blocks);  in __write_changed_details()
750 		details.transaction_id = cpu_to_le64(td->transaction_id);  in __write_changed_details()
751 		details.creation_time = cpu_to_le32(td->creation_time);  in __write_changed_details()
752 		details.snapshotted_time = cpu_to_le32(td->snapshotted_time);  in __write_changed_details()
760 		if (td->open_count)  in __write_changed_details()
761 			td->changed = 0;  in __write_changed_details()
763 			list_del(&td->list);  in __write_changed_details()
764 			kfree(td);  in __write_changed_details()
864 	struct dm_thin_device *td, *tmp;  in dm_pool_metadata_close()  local
867 	list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) {  in dm_pool_metadata_close()
868 		if (td->open_count)  in dm_pool_metadata_close()
871 			list_del(&td->list);  in dm_pool_metadata_close()
872 			kfree(td);  in dm_pool_metadata_close()
904 			 struct dm_thin_device **td)  in __open_device()  argument
923 			*td = td2;  in __open_device()
946 	*td = kmalloc(sizeof(**td), GFP_NOIO);  in __open_device()
947 	if (!*td)  in __open_device()
950 	(*td)->pmd = pmd;  in __open_device()
951 	(*td)->id = dev;  in __open_device()
952 	(*td)->open_count = 1;  in __open_device()
953 	(*td)->changed = changed;  in __open_device()
954 	(*td)->aborted_with_changes = false;  in __open_device()
955 	(*td)->mapped_blocks = le64_to_cpu(details_le.mapped_blocks);  in __open_device()
956 	(*td)->transaction_id = le64_to_cpu(details_le.transaction_id);  in __open_device()
957 	(*td)->creation_time = le32_to_cpu(details_le.creation_time);  in __open_device()
958 	(*td)->snapshotted_time = le32_to_cpu(details_le.snapshotted_time);  in __open_device()
960 	list_add(&(*td)->list, &pmd->thin_devices);  in __open_device()
965 static void __close_device(struct dm_thin_device *td)  in __close_device()  argument
967 	--td->open_count;  in __close_device()
977 	struct dm_thin_device *td;  in __create_thin()  local
1003 	r = __open_device(pmd, dev, 1, &td);  in __create_thin()
1009 	__close_device(td);  in __create_thin()
1031 	struct dm_thin_device *td;  in __set_snapshot_details()  local
1033 	r = __open_device(pmd, origin, 0, &td);  in __set_snapshot_details()
1037 	td->changed = 1;  in __set_snapshot_details()
1038 	td->snapshotted_time = time;  in __set_snapshot_details()
1040 	snap->mapped_blocks = td->mapped_blocks;  in __set_snapshot_details()
1042 	__close_device(td);  in __set_snapshot_details()
1053 	struct dm_thin_device *td;  in __create_snap()  local
1084 	r = __open_device(pmd, dev, 1, &td);  in __create_snap()
1088 	r = __set_snapshot_details(pmd, td, origin, pmd->time);  in __create_snap()
1089 	__close_device(td);  in __create_snap()
1121 	struct dm_thin_device *td;  in __delete_device()  local
1124 	r = __open_device(pmd, dev, 0, &td);  in __delete_device()
1128 	if (td->open_count > 1) {  in __delete_device()
1129 		__close_device(td);  in __delete_device()
1133 	list_del(&td->list);  in __delete_device()
1134 	kfree(td);  in __delete_device()
1349 			     struct dm_thin_device **td)  in dm_pool_open_thin_device()  argument
1355 		r = __open_device(pmd, dev, 0, td);  in dm_pool_open_thin_device()
1361 int dm_pool_close_thin_device(struct dm_thin_device *td)  in dm_pool_close_thin_device()  argument
1363 	down_write(&td->pmd->root_lock);  in dm_pool_close_thin_device()
1364 	__close_device(td);  in dm_pool_close_thin_device()
1365 	up_write(&td->pmd->root_lock);  in dm_pool_close_thin_device()
1370 dm_thin_id dm_thin_dev_id(struct dm_thin_device *td)  in dm_thin_dev_id()  argument
1372 	return td->id;  in dm_thin_dev_id()
1381 static bool __snapshotted_since(struct dm_thin_device *td, uint32_t time)  in __snapshotted_since()  argument
1383 	return td->snapshotted_time > time;  in __snapshotted_since()
1386 int dm_thin_find_block(struct dm_thin_device *td, dm_block_t block,  in dm_thin_find_block()  argument
1391 	struct dm_pool_metadata *pmd = td->pmd;  in dm_thin_find_block()
1392 	dm_block_t keys[2] = { td->id, block };  in dm_thin_find_block()
1415 		result->shared = __snapshotted_since(td, exception_time);  in dm_thin_find_block()
1422 static int __insert(struct dm_thin_device *td, dm_block_t block,  in __insert()  argument
1427 	struct dm_pool_metadata *pmd = td->pmd;  in __insert()
1428 	dm_block_t keys[2] = { td->id, block };  in __insert()
1438 	td->changed = 1;  in __insert()
1440 		td->mapped_blocks++;  in __insert()
1445 int dm_thin_insert_block(struct dm_thin_device *td, dm_block_t block,  in dm_thin_insert_block()  argument
1450 	down_write(&td->pmd->root_lock);  in dm_thin_insert_block()
1451 	if (!td->pmd->fail_io)  in dm_thin_insert_block()
1452 		r = __insert(td, block, data_block);  in dm_thin_insert_block()
1453 	up_write(&td->pmd->root_lock);  in dm_thin_insert_block()
1458 static int __remove(struct dm_thin_device *td, dm_block_t block)  in __remove()  argument
1461 	struct dm_pool_metadata *pmd = td->pmd;  in __remove()
1462 	dm_block_t keys[2] = { td->id, block };  in __remove()
1468 	td->mapped_blocks--;  in __remove()
1469 	td->changed = 1;  in __remove()
1474 int dm_thin_remove_block(struct dm_thin_device *td, dm_block_t block)  in dm_thin_remove_block()  argument
1478 	down_write(&td->pmd->root_lock);  in dm_thin_remove_block()
1479 	if (!td->pmd->fail_io)  in dm_thin_remove_block()
1480 		r = __remove(td, block);  in dm_thin_remove_block()
1481 	up_write(&td->pmd->root_lock);  in dm_thin_remove_block()
1500 bool dm_thin_changed_this_transaction(struct dm_thin_device *td)  in dm_thin_changed_this_transaction()  argument
1504 	down_read(&td->pmd->root_lock);  in dm_thin_changed_this_transaction()
1505 	r = td->changed;  in dm_thin_changed_this_transaction()
1506 	up_read(&td->pmd->root_lock);  in dm_thin_changed_this_transaction()
1514 	struct dm_thin_device *td, *tmp;  in dm_pool_changed_this_transaction()  local
1517 	list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) {  in dm_pool_changed_this_transaction()
1518 		if (td->changed) {  in dm_pool_changed_this_transaction()
1519 			r = td->changed;  in dm_pool_changed_this_transaction()
1528 bool dm_thin_aborted_changes(struct dm_thin_device *td)  in dm_thin_aborted_changes()  argument
1532 	down_read(&td->pmd->root_lock);  in dm_thin_aborted_changes()
1533 	r = td->aborted_with_changes;  in dm_thin_aborted_changes()
1534 	up_read(&td->pmd->root_lock);  in dm_thin_aborted_changes()
1574 	struct dm_thin_device *td;  in __set_abort_with_changes_flags()  local
1576 	list_for_each_entry(td, &pmd->thin_devices, list)  in __set_abort_with_changes_flags()
1577 		td->aborted_with_changes = td->changed;  in __set_abort_with_changes_flags()
1650 int dm_thin_get_mapped_count(struct dm_thin_device *td, dm_block_t *result)  in dm_thin_get_mapped_count()  argument
1653 	struct dm_pool_metadata *pmd = td->pmd;  in dm_thin_get_mapped_count()
1657 		*result = td->mapped_blocks;  in dm_thin_get_mapped_count()
1665 static int __highest_block(struct dm_thin_device *td, dm_block_t *result)  in __highest_block()  argument
1670 	struct dm_pool_metadata *pmd = td->pmd;  in __highest_block()
1672 	r = dm_btree_lookup(&pmd->tl_info, pmd->root, &td->id, &value_le);  in __highest_block()
1681 int dm_thin_get_highest_mapped_block(struct dm_thin_device *td,  in dm_thin_get_highest_mapped_block()  argument
1685 	struct dm_pool_metadata *pmd = td->pmd;  in dm_thin_get_highest_mapped_block()
1689 		r = __highest_block(td, result);  in dm_thin_get_highest_mapped_block()