This patch apply unbalance reclaim into MGLRU, if unbalance reclaim,
will not scan other type folios.
Signed-off-by: Huan Yang <link@xxxxxxxx>
---
mm/vmscan.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 6ed06e73143a..9243a1f0d606 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4481,6 +4481,7 @@ static int isolate_folios(struct lruvec *lruvec, struct scan_control *sc, int sw
int type;
int scanned;
int tier = -1;
+ bool unbalance;
DEFINE_MIN_SEQ(lruvec);
/*
@@ -4488,7 +4489,13 @@ static int isolate_folios(struct lruvec *lruvec, struct scan_control *sc, int sw
* available from the same generation, interpret swappiness 1 as file
* first and 200 as anon first.
*/
- if (!swappiness)
+ if (unlikely(unbalance_file_reclaim(sc, swappiness))) {
+ unbalance = true;
+ type = LRU_GEN_FILE;
+ } else if (unlikely(unbalance_anon_reclaim(sc, swappiness))) {
+ unbalance = true;
+ type = LRU_GEN_ANON;
+ } else if (!swappiness)
type = LRU_GEN_FILE;
else if (min_seq[LRU_GEN_ANON] < min_seq[LRU_GEN_FILE])
type = LRU_GEN_ANON;
@@ -4504,7 +4511,7 @@ static int isolate_folios(struct lruvec *lruvec, struct scan_control *sc, int sw
tier = get_tier_idx(lruvec, type);
scanned = scan_folios(lruvec, sc, type, tier, list);
- if (scanned)
+ if (scanned || unbalance)
break;
type = !type;
--
2.34.1
