Re: [PATCH 1/3] mm, compaction: change COMPACT_ constants into enum

[Hillf Danton]

> 
> From: Michal Hocko <mhocko@xxxxxxxx>
> 
> compaction code is doing weird dances between
> COMPACT_FOO -> int -> unsigned long
> 
> but there doesn't seem to be any reason for that. All functions which
> return/use one of those constants are not expecting any other value
> so it really makes sense to define an enum for them and make it clear
> that no other values are expected.
> 
> This is a pure cleanup and shouldn't introduce any functional changes.
> 
> Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
> ---

Acked-by: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>