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-rw-r--r--mm/vmscan.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 292f50a2a685..463990941a78 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1973,18 +1973,17 @@ static void shrink_zone(struct zone *zone, struct scan_control *sc)
shrink_lruvec(lruvec, sc);
/*
- * Limit reclaim has historically picked one
- * memcg and scanned it with decreasing
- * priority levels until nr_to_reclaim had
- * been reclaimed. This priority cycle is
- * thus over after a single memcg.
- *
- * Direct reclaim and kswapd, on the other
- * hand, have to scan all memory cgroups to
- * fulfill the overall scan target for the
+ * Direct reclaim and kswapd have to scan all memory
+ * cgroups to fulfill the overall scan target for the
* zone.
+ *
+ * Limit reclaim, on the other hand, only cares about
+ * nr_to_reclaim pages to be reclaimed and it will
+ * retry with decreasing priority if one round over the
+ * whole hierarchy is not sufficient.
*/
- if (!global_reclaim(sc)) {
+ if (!global_reclaim(sc) &&
+ sc->nr_reclaimed >= sc->nr_to_reclaim) {
mem_cgroup_iter_break(root, memcg);
break;
}