When there is no reclaimable pages in the zone, even the zone is not balanced, we let kswapd go sleeping. That is prepare_kswapd_sleep will return true in this case. Signed-off-by: Jia He <hejianet@xxxxxxxxx> --- mm/vmscan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 7396a0a..54445e2 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3140,7 +3140,8 @@ static bool prepare_kswapd_sleep(pg_data_t *pgdat, int order, int classzone_idx) if (!managed_zone(zone)) continue; - if (!zone_balanced(zone, order, classzone_idx)) + if (!zone_balanced(zone, order, classzone_idx) + && !zone_reclaimable_pages(zone)) return false; } -- 2.5.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
