linux-kernel - linux-next: build failure after merge of the final tree (tip/s390 trees related)

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Date:	Thu, 18 Oct 2012 17:22:01 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ralf Baechle <ralf@...ux-mips.org>
Subject: linux-next: build failure after merge of the final tree (tip/s390
 trees related)

Hi all,

After merging the final tree, today's linux-next build (s390 allyesconfig)
failed like this:

mm/huge_memory.c:1424:2: error: implicit declaration of function 'pmd_pgprot' [-Werror=implicit-function-declaration]
mm/huge_memory.c:1424:7: error: incompatible types when assigning to type 'pgprot_t' from type 'int'

(see http://kisskb.ellerman.id.au/kisskb/buildresult/7383823/)

Caused by commit 35d3d3427314 ("s390/thp: select
HAVE_ARCH_TRANSPARENT_HUGEPAGE") from the s390 tree interacting with
commit 93c9d633bd9e ("mm/thp: Preserve pgprot across huge page split")
from the tip tree.

N.B. Mips also selects HAVE_ARCH_TRANSPARENT_HUGEPAGE as of commit
e21a828a1bba ("MIPS: Transparent Huge Pages support") from the mips tree
and so will be broken in some configs now as well.

Anyone have suggested merge fix patches I can apply?
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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