This sounds like a good idea.
> And you can _safely_ use raw-io in a _stock_ 2.3.16 with bigmem enabled
> too; you won't risk to crash the kernel but you'll get a graceful -EIO in
> the _worst_ case.
But this means that all user mode programs which plan to use raw-io must
support fall-back to normal io. Even worse, [buggy] programs would run
on
test machines [with less memory], and fail in actual production [with
more
memory]. A bitflags would be a good idea.
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