LRU_UNEVICTABLE is not taken into account when shrink lruvec. So we can
save a bit of stack space by shrinking the array size of nr and targets
to NR_LRU_LISTS - 1. No functional change intended.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/vmscan.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 59b96320f481..0e5818970998 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2881,8 +2881,9 @@ static bool can_age_anon_pages(struct pglist_data *pgdat,
static void shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
{
- unsigned long nr[NR_LRU_LISTS];
- unsigned long targets[NR_LRU_LISTS];
+ /* LRU_UNEVICTABLE is not taken into account. */
+ unsigned long nr[NR_LRU_LISTS - 1];
+ unsigned long targets[NR_LRU_LISTS - 1];
unsigned long nr_to_scan;
enum lru_list lru;
unsigned long nr_reclaimed = 0;
--
2.23.0
