On Tue, Jan 28, 2014 at 01:32:36AM +0100, Gerhard Heift wrote: > > If any future version of the ioctl uses the now unused fields, it also > > has to increase the version. > > Just for me to learn: If we have to increase the version, why do we > have the unused fields anyway? We could expand the struct on demand if > we need new fields. Do I miss something? The spare fields can be used for minor updates, eg. returning a simple number or status information, or passing some flags down to the ioctl. Your patch does a major change to the crucial member of the ioctl structure, the existing unused fileds don't help here and will stay unused. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
