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SubjectPAGE_ALIGN() compile breakage
Commit 27ac792ca0b0a1e7e65f20342260650516c95864
(PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures)
causes on some architectures (e.g. avr32 and mips) compile errors
like the following in some configurations starting with:

<-- snip -->

CC init/main.o
In file included from
from /home/bunk/linux/kernel-2.6/git/linux-2.6/init/main.c:20:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/sched.h: In function 'arch_pick_mmap_layout':
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/sched.h:2149: error: implicit declaration of function 'PAGE_ALIGN'
make[2]: *** [init/main.o] Error 1

<-- snip -->

and more nasty problems follow later.

My suggestion is to:
- revert commit 27ac792ca0b0a1e7e65f20342260650516c95864 and then
- fix all PAGE_ALIGN() instances without moving them.

Unifying code is a good thing, but in this case it is not worth the
trouble it causes by poking into the heart of our headers mess.



"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

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