build error in powerpc tree

[Stephen Rothwell]

Hi Ben,

Commit ef3d3246a0d06be622867d21af25f997aeeb105f ("powerpc/mm: Add Strong
Access Ordering support") in the powerpc/{next,master} tree caused the
following in a powerpc allmodconfig build:

usr/include/asm/mman.h requires linux/mm.h, which does not exist in exported headers

Also, that header file is now using CONFIG_PPC64 which we should not do
in the unprotected (by #ifdef __KERNEL__) part an exported header file,
we should use __powerpc64__ instead.

I suspect all the CONFIG_PPC64 part of the file could be surrounded by
#ifdef __KERNEL__ and the include of <linux/mm.h> could be moved to this
section.  The file should then be changed to unifdef-y from header-y in
the Kbuild file.  (Might have been easier to send a patch :-))

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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