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SubjectRe: [PATCH v2 08/12] mm/migrate: change the interface of the migration target alloc/free functions
2020년 6월 9일 (화) 오후 11:04, Michal Hocko <>님이 작성:
> On Wed 27-05-20 15:44:59, Joonsoo Kim wrote:
> > From: Joonsoo Kim <>
> >
> > To prepare unifying duplicated functions in following patches, this patch
> > changes the interface of the migration target alloc/free functions.
> > Functions now use struct alloc_control as an argument.
> It also pulls private argument into alloc_control and keeps it that way.
> Wouldn't it be better to use explicit types and names in a union? Each
> allocation callback has to understant the meaning anyway. I would
> consider the resulting code cleaner that way. What do you think?

Your suggestion sounds reasonable. Thanks.

My plan is that, as Vlastimil suggested, I will keep the private argument in
migration callback and use the appropriate private argument by the
allocation caller. There will be no private field on alloc_control.


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