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    SubjectRe: [RFC 5/7] Laundry handling for direct reclaim
    On Tue, 21 Aug 2007, Mel Gorman wrote:

    > > + nr_reclaimed += shrink_zones(priority, zones, &sc, &laundry);
    > > shrink_slab(sc.nr_scanned, gfp_mask, lru_pages);
    > > if (reclaim_state) {
    > > nr_reclaimed += reclaim_state->reclaimed_slab;
    > > reclaim_state->reclaimed_slab = 0;
    > > }
    > > +
    > > total_scanned += sc.nr_scanned;
    > > +
    >
    > Could this not isolate a load of dirty pages on the laundry list and then
    > shortly later go to sleep in congestion_wait() ? It would appear that with
    > writeout deferred that the going to sleep is going to do nothing to help
    > the situation.

    Yep that seems to be the problem that Peter saw. We need to throttle
    later.
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