online_page_callback 54 mm/memory_hotplug.c static online_page_callback_t online_page_callback = generic_online_page; online_page_callback 551 mm/memory_hotplug.c if (online_page_callback == generic_online_page) { online_page_callback 552 mm/memory_hotplug.c online_page_callback = callback; online_page_callback 570 mm/memory_hotplug.c if (online_page_callback == callback) { online_page_callback 571 mm/memory_hotplug.c online_page_callback = generic_online_page; online_page_callback 633 mm/memory_hotplug.c (*online_page_callback)(pfn_to_page(pfn), order);