linux-kernel - Re: [next] mm/gup.c:96:10: error: implicit declaration of function 'is_zero_pfn' [-Werror,-Wimplicit-function-declaration]

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Date:   Wed, 3 Feb 2021 16:56:51 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Pavel Tatashin <pasha.tatashin@...een.com>
Cc:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org, Vlastimil Babka <vbabka@...e.cz>,
        Michal Hocko <mhocko@...e.com>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.de>,
        Dan Williams <dan.j.williams@...el.com>,
        Sasha Levin <sashal@...nel.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Peter Zijlstra <peterz@...radead.org>,
        Mel Gorman <mgorman@...e.de>,
        Matthew Wilcox <willy@...radead.org>,
        David Rientjes <rientjes@...gle.com>,
        John Hubbard <jhubbard@...dia.com>,
        Ira Weiny <ira.weiny@...el.com>,
        James Morris <jmorris@...ei.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [next] mm/gup.c:96:10: error: implicit declaration of function
 'is_zero_pfn' [-Werror,-Wimplicit-function-declaration]

On Tue, 2 Feb 2021 10:03:47 -0500 Pavel Tatashin <pasha.tatashin@...een.com> wrote:

> The same problem as fixed here:
> https://lore.kernel.org/linux-mm/CA+CK2bBjC8=cRsL5VhWkcevPsqSXWhsANVjsFNMERLT8vWtiQw@mail.gmail.com/
> 

We're seeing a number of build errors from this series, all of them
confusing.

I'll drop this version.  Please ensure that the various build errors
(including
https://lkml.kernel.org/r/8bf42bd2-1175-f26b-20b2-99b8c4a56aef@infradead.org)
are resolved after applying each patch, so we don't create bisection
holes.