diff options
| -rw-r--r-- | mm/vmscan.c | 19 |
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) | |||
| 1973 | shrink_lruvec(lruvec, sc); | 1973 | shrink_lruvec(lruvec, sc); |
| 1974 | 1974 | ||
| 1975 | /* | 1975 | /* |
| 1976 | * Limit reclaim has historically picked one | 1976 | * Direct reclaim and kswapd have to scan all memory |
| 1977 | * memcg and scanned it with decreasing | 1977 | * cgroups to fulfill the overall scan target for the |
| 1978 | * priority levels until nr_to_reclaim had | ||
| 1979 | * been reclaimed. This priority cycle is | ||
| 1980 | * thus over after a single memcg. | ||
| 1981 | * | ||
| 1982 | * Direct reclaim and kswapd, on the other | ||
| 1983 | * hand, have to scan all memory cgroups to | ||
| 1984 | * fulfill the overall scan target for the | ||
| 1985 | * zone. | 1978 | * zone. |
| 1979 | * | ||
| 1980 | * Limit reclaim, on the other hand, only cares about | ||
| 1981 | * nr_to_reclaim pages to be reclaimed and it will | ||
| 1982 | * retry with decreasing priority if one round over the | ||
| 1983 | * whole hierarchy is not sufficient. | ||
| 1986 | */ | 1984 | */ |
| 1987 | if (!global_reclaim(sc)) { | 1985 | if (!global_reclaim(sc) && |
| 1986 | sc->nr_reclaimed >= sc->nr_to_reclaim) { | ||
| 1988 | mem_cgroup_iter_break(root, memcg); | 1987 | mem_cgroup_iter_break(root, memcg); |
| 1989 | break; | 1988 | break; |
| 1990 | } | 1989 | } |