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    Subject[PATCH 03/11] make zone_nr_pages() helper function
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    make zone_nr_pages() helper function.

    it is used by latter patch.
    this patch doesn't have any functional change.

    Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    Acked-by: Rik van Riel <riel@redhat.com>
    ---
    mm/vmscan.c | 15 +++++++++++----
    1 file changed, 11 insertions(+), 4 deletions(-)

    Index: b/mm/vmscan.c
    ===================================================================
    --- a/mm/vmscan.c
    +++ b/mm/vmscan.c
    @@ -137,6 +137,13 @@ static struct zone_reclaim_stat *get_rec
    return &zone->reclaim_stat;
    }

    +static unsigned long zone_nr_pages(struct zone *zone, struct scan_control *sc,
    + enum lru_list lru)
    +{
    + return zone_page_state(zone, NR_LRU_BASE + lru);
    +}
    +
    +
    /*
    * Add a shrinker callback to be called from the vm
    */
    @@ -1424,10 +1431,10 @@ static void get_scan_ratio(struct zone *
    return;
    }

    - anon = zone_page_state(zone, NR_ACTIVE_ANON) +
    - zone_page_state(zone, NR_INACTIVE_ANON);
    - file = zone_page_state(zone, NR_ACTIVE_FILE) +
    - zone_page_state(zone, NR_INACTIVE_FILE);
    + anon = zone_nr_pages(zone, sc, LRU_ACTIVE_ANON) +
    + zone_nr_pages(zone, sc, LRU_INACTIVE_ANON);
    + file = zone_nr_pages(zone, sc, LRU_ACTIVE_FILE) +
    + zone_nr_pages(zone, sc, LRU_INACTIVE_FILE);
    free = zone_page_state(zone, NR_FREE_PAGES);

    /* If we have very few page cache pages, force-scan anon pages. */



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