If there are lazyfree pages in system, shrink inactive anonymous
LRU to discard lazyfree pages regardless of existing avaialable
swap.
Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
---
mm/vmscan.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 98a1c3ffcaab..ad73e053c581 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1889,8 +1889,13 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
if (!global_reclaim(sc))
force_scan = true;
- /* If we have no swap space, do not bother scanning anon pages. */
- if (!sc->may_swap || (get_nr_swap_pages() <= 0)) {
+ /*
+ * If we have no swap space and lazyfree pages,
+ * do not bother scanning anon pages.
+ */
+ if (!sc->may_swap ||
+ (get_nr_swap_pages() <= 0 &&
+ zone_page_state(zone, NR_LAZYFREE_PAGES) <= 0)) {
scan_balance = SCAN_FILE;
goto out;
}
--
1.9.0
--
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