1616 	struct extent_map_tree *em_tree;  in find_next_chunk()  local
1621 	em_tree = &fs_info->mapping_tree.map_tree;  in find_next_chunk()
1622 	read_lock(&em_tree->lock);  in find_next_chunk()
1623 	n = rb_last(&em_tree->map);  in find_next_chunk()
1628 	read_unlock(&em_tree->lock);  in find_next_chunk()
2806 	struct extent_map_tree *em_tree;  in get_chunk_map()  local
2809 	em_tree = &fs_info->mapping_tree.map_tree;  in get_chunk_map()
2810 	read_lock(&em_tree->lock);  in get_chunk_map()
2811 	em = lookup_extent_mapping(em_tree, logical, length);  in get_chunk_map()
2812 	read_unlock(&em_tree->lock);  in get_chunk_map()
4611 	struct extent_map_tree *em_tree;  in __btrfs_alloc_chunk()  local
4834 	em_tree = &info->mapping_tree.map_tree;  in __btrfs_alloc_chunk()
4835 	write_lock(&em_tree->lock);  in __btrfs_alloc_chunk()
4836 	ret = add_extent_mapping(em_tree, em, 0);  in __btrfs_alloc_chunk()
4841 	write_unlock(&em_tree->lock);  in __btrfs_alloc_chunk()
4866 	write_lock(&em_tree->lock);  in __btrfs_alloc_chunk()
4867 	remove_extent_mapping(em_tree, em);  in __btrfs_alloc_chunk()
4868 	write_unlock(&em_tree->lock);  in __btrfs_alloc_chunk()