[scripts/get_maintainer.pl -f only gave this list, so here goes:] hfs_cat_keycmp() in fs/hfs/catalog.c contains retval = be32_to_cpu(key1->cat.ParID) - be32_to_cpu(key2->cat.ParID); Is it guaranteed/documented somewhere that these CNIDs are always within 2^31-1 of each other (in practice probably meaning that they are both in [0, 2^31-1])? I suppose the answer to the 'guaranteed' part is yes, as otherwise the Btree wouldn't work well... Rasmus -- 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