diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 014d0d181be0..2fd50ca88016 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2130,22 +2130,13 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg, int pass; /* - * If the zone or memcg is small, nr[l] can be 0. This - * results in no scanning on this priority and a potential - * priority drop. Global direct reclaim can go to the next - * zone and tends to have no problems. Global kswapd is for - * zone balancing and it needs to scan a minimum amount. When + * If the zone or memcg is small, nr[l] can be 0. When * reclaiming for a memcg, a priority drop can cause high - * latencies, so it's better to scan a minimum amount there as - * well. + * latencies, so it's better to scan a minimum amount. When a + * cgroup has already been deleted, scrape out the remaining + * cache forcefully to get rid of the lingering state. */ - if (current_is_kswapd()) { - if (!pgdat_reclaimable(pgdat)) - force_scan = true; - if (!mem_cgroup_online(memcg)) - force_scan = true; - } - if (!global_reclaim(sc)) + if (!global_reclaim(sc) || !mem_cgroup_online(memcg)) force_scan = true; /* If we have no swap space, do not bother scanning anon pages. */ |