struct ext4_sb_info *sbi = EXT4_SB(sb);
        ext4_lblk_t c_offset = map->m_lblk & (sbi->s_cluster_ratio-1);
        ext4_lblk_t ex_cluster_start, ex_cluster_end;
-       ext4_lblk_t rr_cluster_start, rr_cluster_end;
+       ext4_lblk_t rr_cluster_start;
        ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block);
        ext4_fsblk_t ee_start = ext4_ext_pblock(ex);
        unsigned short ee_len = ext4_ext_get_actual_len(ex);
 
        /* The requested region passed into ext4_map_blocks() */
        rr_cluster_start = EXT4_B2C(sbi, map->m_lblk);
-       rr_cluster_end = EXT4_B2C(sbi, map->m_lblk + map->m_len - 1);
 
        if ((rr_cluster_start == ex_cluster_end) ||
            (rr_cluster_start == ex_cluster_start)) {