linux-kernel - [PATCH 8/9] mm/vmscan: restore active/inactive ratio for anonymous LRU

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Date:   Tue, 11 Feb 2020 15:19:52 +0900
From:   js1304@...il.com
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Hugh Dickins <hughd@...gle.com>,
        Minchan Kim <minchan@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Mel Gorman <mgorman@...hsingularity.net>, kernel-team@....com,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH 8/9] mm/vmscan: restore active/inactive ratio for anonymous LRU

From: Joonsoo Kim <iamjoonsoo.kim@....com>

Now, workingset detection is implemented for anonymous LRU.
We don't have to worry about the misfound for workingset due to
the ratio of active/inactive. Let's restore the ratio.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
---
 mm/vmscan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index a1892e7..81ff725 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2237,7 +2237,7 @@ static bool inactive_is_low(struct lruvec *lruvec, enum lru_list inactive_lru)
 	active = lruvec_page_state(lruvec, NR_LRU_BASE + active_lru);
 
 	gb = (inactive + active) >> (30 - PAGE_SHIFT);
-	if (gb && is_file_lru(inactive_lru))
+	if (gb)
 		inactive_ratio = int_sqrt(10 * gb);
 	else
 		inactive_ratio = 1;
-- 
2.7.4