[merged mm-stable] mm-damon-ops-common-factor-out-damon_putback_folio_list.patch removed from -mm tree

[merged mm-stable] mm-damon-ops-common-factor-out-damon_putback_folio_list.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/damon/ops-common: factor out damon_putback_folio_list()
has been removed from the -mm tree.  Its filename was
     mm-damon-ops-common-factor-out-damon_putback_folio_list.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Li Youhong <liyouhong@kylinos.cn>
Subject: mm/damon/ops-common: factor out damon_putback_folio_list()
Date: Mon, 31 Aug 2026 07:26:05 -0700

The putback loop is duplicated in damon_migrate_folio_list() and on the
invalid-nid path of damon_migrate_pages().  Factor it into a small helper
for readability.  No functional change.

Link: https://lore.kernel.org/20260831142611.77572-4-sj@kernel.org
Signed-off-by: Li Youhong <liyouhong@kylinos.cn>
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SJ Park <sj@kernel.org>
Cc: Enze Li <lienze@kylinos.cn>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hari Mishal <harimishal1@gmail.com>
Cc: Jaeyeon Lee <jaeyeon.lee.dev@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: "Zenghui Yu (Huawei)" <zenghui.yu@linux.dev>
Cc: zhaozhengzhuo <zhaozhengzhuo@uniontech.com>
---

 mm/damon/ops-common.c |   30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

--- a/mm/damon/ops-common.c~mm-damon-ops-common-factor-out-damon_putback_folio_list
+++ a/mm/damon/ops-common.c
@@ -335,6 +335,19 @@ static unsigned int __damon_migrate_foli
 	return nr_succeeded;
 }
 
+static void damon_putback_folio_list(struct list_head *folio_list)
+{
+	struct folio *folio;
+
+	while (!list_empty(folio_list)) {
+		folio = lru_to_folio(folio_list);
+		list_del(&folio->lru);
+		node_stat_sub_folio(folio, NR_ISOLATED_ANON +
+				folio_is_file_lru(folio));
+		folio_putback_lru(folio);
+	}
+}
+
 static unsigned int damon_migrate_folio_list(struct list_head *folio_list,
 						struct pglist_data *pgdat,
 						int target_nid)
@@ -376,13 +389,7 @@ keep:
 
 	list_splice(&ret_folios, folio_list);
 
-	while (!list_empty(folio_list)) {
-		folio = lru_to_folio(folio_list);
-		list_del(&folio->lru);
-		node_stat_sub_folio(folio, NR_ISOLATED_ANON +
-				folio_is_file_lru(folio));
-		folio_putback_lru(folio);
-	}
+	damon_putback_folio_list(folio_list);
 
 	return nr_migrated;
 }
@@ -399,14 +406,7 @@ unsigned long damon_migrate_pages(struct
 
 	if (target_nid < 0 || target_nid >= MAX_NUMNODES ||
 			!node_state(target_nid, N_MEMORY)) {
-		while (!list_empty(folio_list)) {
-			struct folio *folio = lru_to_folio(folio_list);
-
-			list_del(&folio->lru);
-			node_stat_sub_folio(folio, NR_ISOLATED_ANON +
-					folio_is_file_lru(folio));
-			folio_putback_lru(folio);
-		}
+		damon_putback_folio_list(folio_list);
 		return nr_migrated;
 	}
 
_

Patches currently in -mm which might be from liyouhong@kylinos.cn are