diff mbox series

[v2,11/16] mm/huge_memory: try to free subpage in swapcache when possible

Message ID 20220628132835.8925-12-linmiaohe@huawei.com (mailing list archive)
State New
Headers show
Series A few cleanup patches for huge_memory | expand

Commit Message

Miaohe Lin June 28, 2022, 1:28 p.m. UTC 
Subpages in swapcache won't be freed even if it is the last user of the
page until next time reclaim. It shouldn't hurt indeed, but we could try
to free these pages to save more memory for system.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 mm/huge_memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index b0fc3c560245..bded58ada414 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2638,7 +2638,7 @@  static void __split_huge_page(struct page *page, struct list_head *list,
 		 * requires taking the lru_lock so we do the put_page
 		 * of the tail pages after the split is complete.
 		 */
-		put_page(subpage);
+		free_page_and_swap_cache(subpage);
 	}
 }