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    SubjectRe: [PATCH -mm] vmscan: bail out of page reclaim after swap_cluster_max pages
    On Thu, 13 Nov 2008 17:12:08 -0500 Rik van Riel <> wrote:

    > Sometimes the VM spends the first few priority rounds rotating back
    > referenced pages and submitting IO. Once we get to a lower priority,
    > sometimes the VM ends up freeing way too many pages.
    > The fix is relatively simple: in shrink_zone() we can check how many
    > pages we have already freed and break out of the loop.
    > However, in order to do this we do need to know how many pages we already
    > freed, so move nr_reclaimed into scan_control.

    There was a reason for not doing this, but I forget what it was. It might require
    some changelog archeology. iirc it was to do with balancing scanning rates
    between the various things which we scan.

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      Last update: 2008-11-14 04:31    [W:4.036 / U:1.464 seconds]
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