On Tuesday 06 September 2011, Artem Bityutskiy wrote: > Not sure about the bus approach - David, could you take a look at it > please? If we can handle errors there - then we could indeed re-use the > UBI control device. We could even re-use the ioctl data structures for > UBI volumes creation/removal - we have plenty of space there reserved > for future extensions. I would generally recommend using new ioctl commands. ioctl numbers are cheap, but complexity in data structures is not, because every user who wants to deal with the data structures has to understand them. Also, changing the ABI is always tricky since you have to provide backward and forwards compatibility with existing kernels and with existing user space. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html