Hi all The third parameter of "ext4_ext_put_in_cache" is used to receive physical block number. I think the data type should be "ext4_fsblk_t". Thanks in advance. YZ - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html