* Mel Gorman <[email protected]> wrote:
> > In the full-flushing case (v6 without patch 4) the batching limit is
> > 'infinite', we'll batch as long as possible, right?
>
> No because we must flush before pages are freed so the maximum batching is
> related to SWAP_CLUSTER_MAX. If we free a page before the flush then in
> theory
> the page can be reallocated and a stale TLB entry can allow access to
> unrelated
> data. It would be almost impossible to trigger corruption this way but it's a
> concern.
Well, could we say double SWAP_CLUSTER_MAX to further reduce the IPI rate?
Thanks,
Ingo
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