On Thu, Feb 21, 2013 at 6:14 AM, Jiri Slaby <jsl...@suse.cz> wrote:
>>
>> Does Ingo's revert help? https://lkml.org/lkml/2013/2/15/168
>
> Not at all...
>
Then mind taking a try?

--- a/mm/vmscan.c       Thu Feb 21 20:01:02 2013
+++ b/mm/vmscan.c       Thu Feb 21 20:05:58 2013
@@ -1715,7 +1715,7 @@ static void get_scan_count(struct lruvec
         * to swap.  Better start now and leave the - probably heavily
         * thrashing - remaining file pages alone.
         */
-       if (global_reclaim(sc)) {
+       if (global_reclaim(sc) && sc->priority >= DEF_PRIORITY - 2) {
                free = zone_page_state(zone, NR_FREE_PAGES);
                if (unlikely(file + free <= high_wmark_pages(zone))) {
                        scan_balance = SCAN_ANON;
@@ -2840,9 +2840,10 @@ out:
                 * reclaim if they wish.
                 */
                if (sc.nr_reclaimed < SWAP_CLUSTER_MAX)
-                       order = sc.order = 0;
-
-               goto loop_again;
+                       if (order != 0) {
+                               sc.order = order = 0;
+                               goto loop_again;
+                       }
        }

        /*
--
--
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