On May 02, 2007 00:20 +1000, David Chinner wrote: > My point was that there is a difference between specification and > implementation - if the specification says something is compulsory, > then they must be implemented in the filesystem. This is easy > enough to ensure by code review - we don't need additional interface > complexity for this.... What you seem to be missing about my proposal is that the FLAG_INCOMPAT is for future use by that part of the specification we haven't thought of yet... Having COMPAT/INCOMPAT flags has been very useful for ext2/3/4, and is much better than having version numbers for the interface. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - 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