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From: SJ Park <sj@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Enze Li <lienze@kylinos.cn>, SJ Park <sj@kernel.org>,
	damon@lists.linux.dev, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: [PATCH 1/2] mm/damon/core: use list_{next,prev}_entry() in damon_{next,prev}_region()
Date: Mon,  9 Nov 2026 17:05:56 -0800	[thread overview]
Message-ID: <20261110010558.104905-2-sj@kernel.org> (raw)
In-Reply-To: <20261110010558.104905-1-sj@kernel.org>

From: Enze Li <lienze@kylinos.cn>

damon_next_region() and damon_prev_region() manually do container_of()
type casting to fetch the next and previous region from the linked
list.  Use the dedicated list.h helpers, list_next_entry() and
list_prev_entry(), as damon_first_region() and damon_last_region() do.

Signed-off-by: Enze Li <lienze@kylinos.cn>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: SJ Park <sj@kernel.org>
---
Changes from v1
- v1: https://lore.kernel.org/20261103100714.70742-1-lienze@kylinos.cn
- Collect R-b: from SJ.
- Rebase to the latest mm-new.

 include/linux/damon.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index 1302ffb6f0bcb..c32ef79c3acea 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -992,12 +992,12 @@ static inline unsigned long damon_rand(struct damon_ctx *ctx,
 
 static inline struct damon_region *damon_next_region(struct damon_region *r)
 {
-	return container_of(r->list.next, struct damon_region, list);
+	return list_next_entry(r, list);
 }
 
 static inline struct damon_region *damon_prev_region(struct damon_region *r)
 {
-	return container_of(r->list.prev, struct damon_region, list);
+	return list_prev_entry(r, list);
 }
 
 static inline struct damon_region *damon_last_region(struct damon_target *t)
-- 
2.47.3


  reply	other threads:[~2026-11-10  1:06 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-10  1:05 [PATCH 0/2] mm/damon: cleanup region iterator and damon_reclaim user doc SJ Park
2026-11-10  1:05 ` SJ Park [this message]
2026-11-10  1:08   ` [PATCH 1/2] mm/damon/core: use list_{next,prev}_entry() in damon_{next,prev}_region() sashiko-bot
2026-11-10  1:05 ` [PATCH 2/2] Docs/admin-guide/mm/damon/reclaim: improve language SJ Park
2026-11-10  1:08   ` sashiko-bot

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