* on success, or a negative error value on failure.
  */
 static int
-move_extent_par_page(struct file *o_filp, struct inode *donor_inode,
+move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
                  pgoff_t orig_page_offset, int data_offset_in_page,
                  int block_len_in_page, int uninit)
 {
                while (orig_page_offset <= seq_end_page) {
 
                        /* Swap original branches with new branches */
-                       ret = move_extent_par_page(o_filp, donor_inode,
+                       ret = move_extent_per_page(o_filp, donor_inode,
                                                orig_page_offset,
                                                data_offset_in_page,
                                                block_len_in_page, uninit);