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    Subject[PATCH 1/7] memcg: sc.nr_to_reclaim should be initialized
    Date
    Currently, mem_cgroup_shrink_node_zone() initialize sc.nr_to_reclaim as 0.
    It mean shrink_zone() only scan 32 pages and immediately return even if
    it doesn't reclaim any pages.

    This patch fixes it.

    Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    ---
    mm/vmscan.c | 1 +
    1 files changed, 1 insertions(+), 0 deletions(-)

    diff --git a/mm/vmscan.c b/mm/vmscan.c
    index 1691ad0..bd1d035 100644
    --- a/mm/vmscan.c
    +++ b/mm/vmscan.c
    @@ -1932,6 +1932,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
    struct zone *zone, int nid)
    {
    struct scan_control sc = {
    + .nr_to_reclaim = SWAP_CLUSTER_MAX,
    .may_writepage = !laptop_mode,
    .may_unmap = 1,
    .may_swap = !noswap,
    --
    1.6.5.2




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