[merged mm-stable] mm-memcg-v1-make-mem_cgroup_oom_notify_cb-return-void.patch removed from -mm tree

[merged mm-stable] mm-memcg-v1-make-mem_cgroup_oom_notify_cb-return-void.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: memcg-v1: make mem_cgroup_oom_notify_cb() return void
has been removed from the -mm tree.  Its filename was
     mm-memcg-v1-make-mem_cgroup_oom_notify_cb-return-void.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: Guopeng Zhang <zhangguopeng@kylinos.cn>
Subject: mm: memcg-v1: make mem_cgroup_oom_notify_cb() return void
Date: Mon, 13 Jul 2026 17:37:37 +0800

Commit 7d74b06f240f ("memcg: use for_each_mem_cgroup") replaced the
mem_cgroup_walk_tree() call in mem_cgroup_oom_notify() with
for_each_mem_cgroup_tree(), but left mem_cgroup_oom_notify_cb() with the
int return type required by the old callback interface.

The function now has a single direct caller and no failure path.  Make it
return void.

Link: https://lore.kernel.org/20260713093737.3299646-1-guopeng.zhang@linux.dev
Signed-off-by: Guopeng Zhang <zhangguopeng@kylinos.cn>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Reviewed-by: SJ Park <sj@kernel.org>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memcontrol-v1.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/mm/memcontrol-v1.c~mm-memcg-v1-make-mem_cgroup_oom_notify_cb-return-void
+++ a/mm/memcontrol-v1.c
@@ -752,7 +752,7 @@ static int compare_thresholds(const void
 	return 0;
 }
 
-static int mem_cgroup_oom_notify_cb(struct mem_cgroup *memcg)
+static void mem_cgroup_oom_notify_cb(struct mem_cgroup *memcg)
 {
 	struct mem_cgroup_eventfd_list *ev;
 
@@ -762,7 +762,6 @@ static int mem_cgroup_oom_notify_cb(stru
 		eventfd_signal(ev->eventfd);
 
 	spin_unlock(&memcg_oom_lock);
-	return 0;
 }
 
 static void mem_cgroup_oom_notify(struct mem_cgroup *memcg)
_

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

mm-memcg-stop-reclaim-when-a-limit-update-is-superseded.patch