On Wed, Apr 12, 2017 at 02:01:59PM +0900, Hoeun Ryu wrote: > vm_area_add_early/vm_area_register_early() are used to reserve vmalloc area > during boot process and those virtually mapped areas are never unmapped. > So `OR` VM_STATIC flag to the areas in vmalloc_init() when importing > existing vmlist entries and prevent those areas from being removed from the > rbtree by accident. How would they be removed "by accident"?