linux-kernel - Re: [PATCH 2/2] mm: simplify follow

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Date:   Wed, 11 Nov 2020 09:18:00 +0100
From:   Christoph Hellwig <hch@....de>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     hch@....de, akpm@...ux-foundation.org, dan.j.williams@...el.com,
        daniel@...ll.ch, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-nvdimm@...ts.01.org, Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH 2/2] mm: simplify follow_pte{,pmd}

On Tue, Nov 10, 2020 at 06:21:22PM -0800, Nick Desaulniers wrote:
> Sorry, I think this patch may be causing a regression for us for s390?
> https://travis-ci.com/github/ClangBuiltLinux/continuous-integration/jobs/432129279#L768
> 
> (via https://lore.kernel.org/linux-mm/20201029101432.47011-3-hch@lst.de)

Hmm, the call to follow_pte_pmd in the s390 code does not actually exist
in my tree.