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SubjectRe: [RFC] first try for swap prefetch
John Bradford wrote:


> We could possibly avoid this by swapping the pages back
>in after one minute of inactivity, then letting the
>disk spin down.


Why not also write pages out to swap before it's really necessary?
If they were left mapped but marked as having up-to-date copies
on swap, they could be discarded immediately if the system needed
memory. (Of course if they got written to they would have to be
paged out again.)

--
"Let's fight until six, and then have dinner," said Tweedledum.
--Lewis Carroll, _Through the Looking Glass_
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