[PATCH v2 2/2] mm:vmscan: the ref clean dirty folio skip unmap
From: Zhiguo Jiang
Date: Thu Oct 19 2023 - 09:42:47 EST
If the dirty folio in folio_list which is inactive file lru is
FOLIOREF_RECLAIM_CLEAN, the dirty folio can skip unmap in advance
to reduce recyling time.
Signed-off-by: Zhiguo Jiang <justinjiang@xxxxxxxx>
---
Changelog:
v1->v2:
1. The dirty folio in folio_list wich FOLIOREF_RECLAIM_CLEAN skip
unmap in advance.
mm/vmscan.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index e067269275a5..e587dafeef94 100755
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1225,7 +1225,10 @@ static unsigned int shrink_folio_list(struct list_head *folio_list,
stat->nr_ref_keep += nr_pages;
goto keep_locked;
case FOLIOREF_RECLAIM:
+ break;
case FOLIOREF_RECLAIM_CLEAN:
+ if (dirty)
+ goto activate_locked;
; /* try to reclaim the folio below */
}
--
2.39.0