On Thu, Nov 13, 2014 at 12:54:39AM +0900, Daniel Dressler wrote: > Our ulist data structure stores at max 64bit > values. qgroup has used this structure to store > pointers. In the future when we upgrade to 128bit > this casting of pointers to uint64_t will break.
What are we going to upgrade to 128 bits? > This patch adds a BUILD_BUG ensuring that this > code will not be left untouched in the upgrade. > > It also marks this issue on the TODO list so it > may be addressed before such an upgrade. > > + (BUILD_BUG_ON_ZERO(sizeof(uintptr_t) > sizeof(u64)) + \ So it's pointers, this is similar to the 32bit -> 64bit transition, a change that will affect everything, one BUILD_BUG on does not make any difference. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
