> On Apr 12, 2017, at 3:02 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > >> 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"? I don't mean actual use-cases, but I just want to make it robust against like programming errors.
