linux-kernel - [PATCH -next] mm/damon/paddr: minor refactor of damon_pa

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Message-ID: <20230302144926.40012-1-wangkefeng.wang@huawei.com>
Date:   Thu, 2 Mar 2023 22:49:26 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     SeongJae Park <sj@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <damon@...ts.linux.dev>, Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH -next] mm/damon/paddr: minor refactor of damon_pa_pageout()

Omit two lines by converting if(!folio_isolate_lru()) to
if(folio_isolate_lru()).

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 mm/damon/paddr.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 6c655d9b5639..a557f3c9300f 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -246,14 +246,12 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s)
 
 		folio_clear_referenced(folio);
 		folio_test_clear_young(folio);
-		if (!folio_isolate_lru(folio)) {
-			folio_put(folio);
-			continue;
+		if (folio_isolate_lru(folio)) {
+			if (folio_test_unevictable(folio))
+				folio_putback_lru(folio);
+			else
+				list_add(&folio->lru, &folio_list);
 		}
-		if (folio_test_unevictable(folio))
-			folio_putback_lru(folio);
-		else
-			list_add(&folio->lru, &folio_list);
 		folio_put(folio);
 	}
 	applied = reclaim_pages(&folio_list);
-- 
2.35.3