diff --git a/mm/vmscan.c b/mm/vmscan.c index 777662967d99..b86ebf7c3418 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -5594,7 +5594,11 @@ static void set_initial_priority(struct pglist_data *pgdat, struct scan_control /* round down reclaimable and round up sc->nr_to_reclaim */ priority = fls_long(reclaimable) - 1 - fls_long(sc->nr_to_reclaim - 1); - sc->priority = clamp(priority, 0, DEF_PRIORITY); + /* + * The estimation is based on LRU pages only, so cap it to prevent + * overshoots of shrinker objects by large margins. + */ + sc->priority = clamp(priority, DEF_PRIORITY / 2, DEF_PRIORITY); } static void lru_gen_shrink_node(struct pglist_data *pgdat, struct scan_control *sc) @@ -7398,6 +7402,7 @@ static bool kswapd_shrink_node(pg_data_t *pgdat, { struct zone *zone; int z; + unsigned long nr_reclaimed = sc->nr_reclaimed; /* Reclaim a number of pages proportional to the number of zones */ sc->nr_to_reclaim = 0; @@ -7425,7 +7430,8 @@ static bool kswapd_shrink_node(pg_data_t *pgdat, if (sc->order && sc->nr_reclaimed >= compact_gap(sc->order)) sc->order = 0; - return sc->nr_scanned >= sc->nr_to_reclaim; + /* account for progress from mm_account_reclaimed_pages() */ + return max(sc->nr_scanned, sc->nr_reclaimed - nr_reclaimed) >= sc->nr_to_reclaim; } /* Page allocator PCP high watermark is lowered if reclaim is active. */