diff options
| -rw-r--r-- | mm/vmscan.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 0294ab34f475..650d26832569 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1652,6 +1652,30 @@ static int current_may_throttle(void) bdi_write_congested(current->backing_dev_info); } +static bool inactive_reclaimable_pages(struct lruvec *lruvec, + struct scan_control *sc, enum lru_list lru) +{ + int zid; + struct zone *zone; + int file = is_file_lru(lru); + struct pglist_data *pgdat = lruvec_pgdat(lruvec); + + if (!global_reclaim(sc)) + return true; + + for (zid = sc->reclaim_idx; zid >= 0; zid--) { + zone = &pgdat->node_zones[zid]; + if (!populated_zone(zone)) + continue; + + if (zone_page_state_snapshot(zone, NR_ZONE_LRU_BASE + + LRU_FILE * file) >= SWAP_CLUSTER_MAX) + return true; + } + + return false; +} + /* * shrink_inactive_list() is a helper for shrink_node(). It returns the number * of reclaimed pages @@ -1674,6 +1698,9 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, struct pglist_data *pgdat = lruvec_pgdat(lruvec); struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat; + if (!inactive_reclaimable_pages(lruvec, sc, lru)) + return 0; + while (unlikely(too_many_isolated(pgdat, file, sc))) { congestion_wait(BLK_RW_ASYNC, HZ/10); |