Marcello and Takahashi-san,

In working with your migration cache patch, I found out that
if CONFIG_MIGRATE_MEMORY is not set, then the kernel with your patch
applied (on top of my "split out" version of the memory migration
code from the hotplug patch) doesn't link.  (It still expects
migration_space, etc to be defined as externals, and these aren't
defined if CONFIG_MIGRATE_MEMORY is not set.)

Now I realize your patch is probably not "final" (there are a couple
of FIXME's still in there....), but I found the attached patch
useful as it lets my patched kernel compile with or without
CONFIG_MEMORY_MIGRATE set.

I hope you find this useful and will incorporate it into your
migration cache patch.

-- 
Best Regards,
Ray
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                   Ray Bryant
512-453-9679 (work)         512-507-7807 (cell)
raybry@sgi.com             raybry@austin.rr.com
The box said: "Requires Windows 98 or better",
            so I installed Linux.
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