+int ext4_fs_truncate_inode(struct ext4_inode_ref *inode_ref, uint64_t new_size);
+
+/**@brief Compute 'goal' for inode index
+ * @param inode_ref Reference to inode, to allocate block for
+ * @return goal
+ */
+ext4_fsblk_t ext4_fs_inode_to_goal_block(struct ext4_inode_ref *inode_ref);
+
+/**@brief Compute 'goal' for allocation algorithm (For blockmap).
+ * @param inode_ref Reference to inode, to allocate block for
+ * @param goal
+ * @return error code
+ */
+int ext4_fs_indirect_find_goal(struct ext4_inode_ref *inode_ref,
+ ext4_fsblk_t *goal);