[RFC][PATCH 24/35] arm: use pte_offset_kernel() as base for pte_offset_map*()

[Dave Hansen]

Some architectures use pte_offset_map() as a basis for
pte_offset_kernel().  Others do the inverse.

Although arbitrary, Using pte_offset_kernel() as the base
seems a wee bit more popular and it also fits in well
with the way I'm breaking out the headers.

Instead of coding the same implementation twice, this
makes pte_offset_map{,_nested}() call pte_offset_kernel()
directly.

Signed-off-by: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>
---

 linux-2.6.git-dave/arch/arm/include/asm/ptemap.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN arch/arm/include/asm/ptemap.h~arm-pte_offset_kernel arch/arm/include/asm/ptemap.h
--- linux-2.6.git/arch/arm/include/asm/ptemap.h~arm-pte_offset_kernel	2009-04-30 15:11:07.000000000 -0700
+++ linux-2.6.git-dave/arch/arm/include/asm/ptemap.h	2009-04-30 15:11:07.000000000 -0700
@@ -1,8 +1,8 @@
 #ifndef _ARM_ASM_PTEMAP_H
 #define _ARM_ASM_PTEMAP_H
 
-#define pte_offset_map(dir,addr)	(pmd_page_vaddr(*(dir)) + pte_index(addr))
-#define pte_offset_map_nested(dir,addr)	(pmd_page_vaddr(*(dir)) + pte_index(addr))
+#define pte_offset_map(dir,addr)	pte_offset_kernel(dir,addr)
+#define pte_offset_map_nested(dir,addr)	pte_offset_kernel(dir,addr)
 #define pte_unmap(pte)		do { } while (0)
 #define pte_unmap_nested(pte)	do { } while (0)
 
_
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