On 10/09/2013 12:20 PM, Tejun Heo wrote: > Realistically tho, why would people be using 4k mappings on 2T > machines? CONFIG_DEBUG_PAGEALLOC and CONFIG_KMEMCHECK both disable using >4k pages. I actually ran in to this on a 1TB machine a few weeks ago: https://lkml.org/lkml/2013/8/9/546 So it's not a common case for stuff that customers have, but it sure as *HECK* is needed for debugging. -- 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>