Hello, Andrew. On Fri, Jul 20, 2012 at 02:22:13PM -0700, Andrew Morton wrote: > My point is that having to ensure that each arch zeroes out this > structure is difficult/costly/unreliable/fragile. It would be better > if we can reliably clear it at some well-known place in core MM. > > That might mean that the memory gets cleared twice on some > architectures, but I doubt if that matters - it's a once-off thing. Clearing twice isn't the problem here. The problem is the risk of zapping fields which are already in use. That would be way more unexpected and difficult to track down than garbage value in whatever field. It might not be ideal but I think nudging all archs to clear all static global structures they allocate is the better way here. It's at least better than having to worry about this type of partial re-initialization. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>