linux-kernel - [PATCH v3 1/3] mm/damon/paddr: minor refactor of damon_pa

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Date:   Wed, 8 Mar 2023 16:33:09 +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 v3 1/3] mm/damon/paddr: minor refactor of damon_pa_pageout()

Omit three lines by unified folio_put(), and make code more clear.

Reviewed-by: SeongJae Park <sj@...nel.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 mm/damon/paddr.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index dd9c33fbe805..0db724aec5cb 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -238,21 +238,18 @@ static unsigned long damon_pa_pageout(struct damon_region *r, struct damos *s)
 		if (!folio)
 			continue;
 
-		if (damos_pa_filter_out(s, folio)) {
-			folio_put(folio);
-			continue;
-		}
+		if (damos_pa_filter_out(s, folio))
+			goto put_folio;
 
 		folio_clear_referenced(folio);
 		folio_test_clear_young(folio);
-		if (!folio_isolate_lru(folio)) {
-			folio_put(folio);
-			continue;
-		}
+		if (!folio_isolate_lru(folio))
+			goto put_folio;
 		if (folio_test_unevictable(folio))
 			folio_putback_lru(folio);
 		else
 			list_add(&folio->lru, &folio_list);
+put_folio:
 		folio_put(folio);
 	}
 	applied = reclaim_pages(&folio_list);
-- 
2.35.3