> It _is_ short. It is doing the same job that the swap code does. The
> point is to avoid having to re-implement the swap code over and over
> again, once for raw IO, once for the page cache --- better just to move
> the existing mechanism into the general-purpose IO code.
IIRC, Linus said that he would accept (non-block) device drivers which
use map_user_kiobuf(). So I think we'll need a "bounce_user_kiobuf(..)"
function anyway.
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