Hi Minchan, On wto, 2013-08-13 at 16:04 +0900, Minchan Kim wrote: > patch 2 introduce pinpage control > subsystem. So, subsystems want to control pinpage should implement own > pinpage_xxx functions because each subsystem would have other character > so what kinds of data structure for managing pinpage information depends > on them. Otherwise, they can use general functions defined in pinpage > subsystem. patch 3 hacks migration.c so that migration is > aware of pinpage now and migrate them with pinpage subsystem. I wonder why don't we use page->mapping and a_ops? Is there any disadvantage of such mapping/a_ops? Best regards, Krzysztof -- 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>