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    SubjectRe: mmotm 2020-07-27-18-18 uploaded (mm/page_alloc.c)
    On Tue, 28 Jul 2020 15:39:21 -0700 Randy Dunlap <rdunlap@infradead.org> wrote:

    > On 7/28/20 2:55 PM, Andrew Morton wrote:
    > > On Tue, 28 Jul 2020 05:33:58 -0700 Randy Dunlap <rdunlap@infradead.org> wrote:
    > >
    > >> On 7/27/20 6:19 PM, Andrew Morton wrote:
    > >>> The mm-of-the-moment snapshot 2020-07-27-18-18 has been uploaded to
    > >>>
    > >>> http://www.ozlabs.org/~akpm/mmotm/
    >
    >
    > >> on x86_64:
    > >>
    > >> ../mm/page_alloc.c:8355:48: warning: ‘struct compact_control’ declared inside parameter list will not be visible outside of this definition or declaration
    > >> static int __alloc_contig_migrate_range(struct compact_control *cc,
    > >> ^~~~~~~~~~~~~~~
    > >
    > > As is usually the case with your reports, I can't figure out how to
    > > reproduce it. I copy then .config, run `make oldconfig' (need to hit
    > > enter a zillion times because the .config is whacky) then the build
    > > succeeds. What's the secret?
    >
    > I was not aware that there was a problem. cp .config and make oldconfig
    > should be sufficient -- and I don't understand why you would need to hit
    > enter many times.
    >
    > I repeated this on my system without having to answer any oldconfig prompts
    > and still got build errors.
    >
    > There is no secret that I know of, but it would be good to get to the
    > bottom of this problem.

    Well the first thing I hit was

    Support for big SMP systems with more than 8 CPUs (X86_BIGSMP) [N/y/?] (NEW)

    and your .config doesn't mention that.

    make mrproper
    cp ~/config-randy .config
    make oldconfig


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