"Josef 'Jeff' Sipek": > So, if I understand correctly, you create the entire block as if you were > going to write to disk? Unionfs keeps the data in a linked list. Basically yes. But the dir block in cache has no hole which is contiguous memory. Junjiro Okajima - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html