set_movable_ops
int set_movable_ops(const struct movable_operations *ops, enum pagetype type);
return set_movable_ops(&balloon_mops, PGTY_offline);
EXPORT_SYMBOL_GPL(set_movable_ops);
rc = set_movable_ops(&zsmalloc_mops, PGTY_zsmalloc);
set_movable_ops(NULL, PGTY_zsmalloc);