From 424b091274b51c84670c58ce7c8efa557c047bd8 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Fri, 25 Oct 2024 18:28:06 -0700
Subject: [PATCH] memcg-v1-no-need-for-memcg-locking-for-mglru-fix

remove now-unused local:

mm/vmscan.c: In function 'walk_mm':
mm/vmscan.c:3652:28: error: unused variable 'memcg' [-Werror=unused-variable]
 3652 |         struct mem_cgroup *memcg = lruvec_memcg(lruvec);
      |                            ^~~~~
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/vmscan.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index a1b64ef1d8b1..8862fcfb6000 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3649,10 +3649,8 @@ static void walk_mm(struct mm_struct *mm, struct lru_gen_mm_walk *walk)
 		.p4d_entry = walk_pud_range,
 		.walk_lock = PGWALK_RDLOCK,
 	};
-
 	int err;
 	struct lruvec *lruvec = walk->lruvec;
-	struct mem_cgroup *memcg = lruvec_memcg(lruvec);
 
 	walk->next_addr = FIRST_USER_ADDRESS;
 
-- 
2.50.1