Re: [External] Re: [PATCH v5 03/21] mm/hugetlb: Introduce a new config HUGETLB_PAGE_FREE_VMEMMAP

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On Fri, Nov 20, 2020 at 4:47 PM Michal Hocko <mhocko@xxxxxxxx> wrote:
>
> On Fri 20-11-20 16:35:16, Muchun Song wrote:
> [...]
> > > That being said, unless there are huge advantages to introduce a
> > > config option I would rather not add it because our config space is huge
> > > already and the more we add the more future code maintainance that will
> > > add. If you want the config just for dependency checks then fine by me.
> >
> > Yeah, it is only for dependency checks :)
>
> OK, I must have misread the definition to think that it requires user to
> enable explicitly.
>
> Anyway this feature cannot be really on by default due to overhead. So
> the command line option default has to be flipped.

Got it. Thanks for your suggestion.

>
> --
> Michal Hocko
> SUSE Labs



-- 
Yours,
Muchun



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