On Wed, Apr 12, 2017 at 08:42:08PM +0900, Hoeun Ryu wrote: > > > 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. Oh, ok. The patch makes sense then, although the changelog could use a little update.
