Re: [PATCH] mm: add VM_STATIC flag to vmalloc and prevent from removing the areas
From: Christoph Hellwig
Date: Wed Apr 12 2017 - 02:02:41 EST
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"?