linux-kernel - [PATCH] mm: use pgprot_val to access vm_page

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Date:	Sun, 31 Aug 2014 21:35:56 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	akpm@...ux-foundation.org
Cc:	kirill.shutemov@...ux.intel.com, khlebnikov@...nvz.org,
	riel@...hat.com, mgorman@...e.de, n-horiguchi@...jp.nec.com,
	mhocko@...e.cz, hughd@...gle.com, vbabka@...e.cz,
	walken@...gle.com, minchan@...nel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Sasha Levin <sasha.levin@...cle.com>
Subject: [PATCH] mm: use pgprot_val to access vm_page_prot

pgprot is defined differently in every arch, use the per-arch pgprot_val
to access it.

This fixes a build failure on various arches such as tile and powerpc
caused by "mm: introduce dump_vma".

Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
---
 mm/page_alloc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index add97b8..1e1bd9a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6734,7 +6734,8 @@ void dump_vma(const struct vm_area_struct *vma)
 		"prot %lx anon_vma %p vm_ops %p\n"
 		"pgoff %lx file %p private_data %p\n",
 		vma, (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_next,
-		vma->vm_prev, vma->vm_mm, vma->vm_page_prot.pgprot,
+		vma->vm_prev, vma->vm_mm,
+		(unsigned long)pgprot_val(vma->vm_page_prot),
 		vma->anon_vma, vma->vm_ops, vma->vm_pgoff,
 		vma->vm_file, vma->vm_private_data);
 	dump_flags(vma->vm_flags, vmaflags_names, ARRAY_SIZE(vmaflags_names));
-- 
1.7.10.4

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