From 7a2011a4ecee773a5f8064e1e00d441f73aa5b15 Mon Sep 17 00:00:00 2001
From: Alex Zhuravlev <bzzz@whamcloud.com>
Date: Mon, 19 Apr 2021 09:10:17 +0300
Subject: [PATCH] LU-14622 osd: mark pages accessed on reads

to improve cache hit ratio

Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Change-Id: If4850465d118ed62e9da105dc0cf144ff5041fd3
Reviewed-on: https://review.whamcloud.com/43367
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Wang Shilong <wshilong@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---
 lustre/osd-ldiskfs/osd_io.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lustre/osd-ldiskfs/osd_io.c b/lustre/osd-ldiskfs/osd_io.c
index f8568c7..887ca25 100644
--- a/lustre/osd-ldiskfs/osd_io.c
+++ b/lustre/osd-ldiskfs/osd_io.c
@@ -44,6 +44,7 @@
 /* prerequisite for linux/xattr.h */
 #include <linux/fs.h>
 #include <linux/mm.h>
+#include <linux/swap.h>
 #include <linux/pagevec.h>
 
 /*
@@ -906,6 +907,8 @@ bypass_checks:
 			GOTO(cleanup, rc = -ENOMEM);
 
 		lnb->lnb_locked = 1;
+		if (cache)
+			mark_page_accessed(lnb->lnb_page);
 	}
 
 #if 0
-- 
1.8.3.1