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    Subject[PATCH 16/16] mm: kswapd reclaim debug trace
    Debug trace for kswapd reclaim.

    Signed-off-by: Wu Fengguang <wfg@mail.ustc.edu.cn>
    ---

    mm/vmscan.c | 11 +++++++++++
    1 files changed, 11 insertions(+)

    --- linux.orig/mm/vmscan.c
    +++ linux/mm/vmscan.c
    @@ -1450,6 +1450,17 @@ loop_again:
    if (nr_pages) /* software suspend */
    goto scan_swspd;

    + if (debug_page_reclaim)
    + printk(KERN_DEBUG "zone %d%d watermark %d%d age %lu prio %d\n",
    + zone_idx(prev_zone),
    + zone_idx(zone),
    + zone_watermark_ok(zone, order,
    + zone->pages_high, 0, 0),
    + zone_watermark_ok(zone, order,
    + zone->pages_high,
    + pgdat->nr_zones - 1, 0),
    + zone->page_age, priority);
    +
    if (zone_watermark_ok(zone, order,
    zone->pages_high,
    pgdat->nr_zones - 1, 0)) {
    --
    -
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