linux-kernel - Re: [PATCH v3 0/8] Support for transparent PUD pages for DAX files

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Date:	Wed, 27 Jan 2016 12:39:33 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	Matthew Wilcox <willy@...ux.intel.com>, linux-mm@...ck.org,
	linux-nvdimm@...1.01.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH v3 0/8] Support for transparent PUD pages for DAX files

On Wed, 27 Jan 2016 12:31:31 -0800 Andrew Morton <akpm@...ux-foundation.org> wrote:

> Just from eyeballing the patches, I'm expecting build errors ;)

Didn't take long :(

mm/memory.c: In function 'zap_pud_range':
mm/memory.c:1216: error: implicit declaration of function 'pud_trans_huge'
mm/memory.c:1217: error: 'HPAGE_PUD_SIZE' undeclared (first use in this function)

and, midway:

include/linux/mm.h:348: error: redefinition of 'pud_devmap'
include/asm-generic/pgtable.h:684: note: previous definition of 'pud_devmap' was here

Please run x86_64 allnoconfig at each step of the series, fix and
respin?  It only takes 30s to compile.