[RFC][PATCH 0/5] mm, highmem: kmap_atomic rework -v2

[Peter Zijlstra]

Next version of the kmap_atomic rework using Andrew's fancy CPP trickery to
avoid having to convert the whole tree at once.

This is compile tested for i386-allmodconfig, frv, mips-sb1250-swarm,
powerpc-ppc6xx_defconfig, sparc32_defconfig, arm-omap3 (all with
HIGHEM=y).

Boot-tested with: i386-defconfig.

Not tested with:
 - tile, stock toolchain doesn't build tile targets
 - nm10300, the arch doesn't build with highmem to begin with


Is this something we can live with?


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