Subject: Re: [PATCH 2/2] mm: simplify follow_pte{,pmd}

From: Christoph Hellwig <[email-masked]>
Date: Wed, 11 Nov 2020 09:28:42 +0100

On Wed, Nov 11, 2020 at 09:26:20AM +0100, Christian Borntraeger wrote:
> 
> On 11.11.20 09:18, Christoph Hellwig wrote:
> > 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/[email-masked])
> > 
> > Hmm, the call to follow_pte_pmd in the s390 code does not actually exist
> > in my tree.
> 
> This is a mid-air collision in linux-next between
> 
> b2ff5796a934 ("mm: simplify follow_pte{,pmd}")
> a67a88b0b8de ("s390/pci: remove races against pte updates")

Ah.  The fixup is trivial: just s/follow_pte_pmd/follow_pte/.