Yang Shi <shy828301@xxxxxxxxx> writes: > The memory demotion needs to call migrate_pages() to do the jobs. And > it is controlled by a knob, however, the knob doesn't depend on > CONFIG_MIGRATION. The knob could be truned on even though MIGRATION is > disabled, this will not cause any crash since migrate_pages() would just > return -ENOSYS. But it is definitely not optimal to go through demotion > path then retry regular swap every time. > > And it doesn't make too much sense to have the knob visible to the users > when !MIGRATION. Move the related code from mempolicy.[h|c] to migrate.[h|c]. Sounds reasonable to me. Thanks! > Signed-off-by: Yang Shi <shy828301@xxxxxxxxx> Acked-by: "Huang, Ying" <ying.huang@xxxxxxxxx> Best Regards, Huang, Ying
