On 2017/1/16 22:43, Anshuman Khandual wrote: > On 01/16/2017 07:08 PM, zhongjiang wrote: >> From: zhong jiang <zhongjiang@xxxxxxxxxx> >> >> At present, we skip the reservation storage by the driver for >> the zone_dvice. but the free pages set aside for the memmap is >> ignored. And since the free pages is only used as the memmap, >> so we can also skip the corresponding pages. > But these free pages used for memmap mapping should also be accounted > inside the zone, no ? That's confusing. because first_pfn for zone_device after reserve and free page for memmap mapping. That is used as a actuallly pfn for zone_device. Thanks zhongjiang > -- > 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> > > -- 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>