On Mon, 18 Apr 2011 12:01:31 +0200
Michal Hocko <mhocko@xxxxxxx> wrote:
> Currently we have expand_upwards exported while expand_downwards is
> accessible only via expand_stack or expand_stack_downwards.
>
> check_stack_guard_page is a nice example of the asymmetry. It uses
> expand_stack for VM_GROWSDOWN while expand_upwards is called for
> VM_GROWSUP case.
>
> Let's clean this up by exporting both functions and make those name
> consistent. Let's use expand_stack_{upwards,downwards} so that we are
> explicit about stack manipulation in the name. expand_stack_downwards
> has to be defined for both CONFIG_STACK_GROWS{UP,DOWN} because
> get_arg_page calls the downwards version in the early process
> initialization phase for growsup configuration.
Has this patch been tested on any stack-grows-upwards architecture?
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