linux-kernel - [PATCH bpf-next v2 1/7] mm: declare memcg_page_state

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Message-ID: <20251220041250.372179-2-roman.gushchin@linux.dev>
Date: Fri, 19 Dec 2025 20:12:44 -0800
From: Roman Gushchin <roman.gushchin@...ux.dev>
To: bpf@...r.kernel.org,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc: JP Kobryn <inwardvessel@...il.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Shakeel Butt <shakeel.butt@...ux.dev>,
	Michal Hocko <mhocko@...nel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Michal Hocko <mhocko@...e.com>
Subject: [PATCH bpf-next v2 1/7] mm: declare memcg_page_state_output() in memcontrol.h

To use memcg_page_state_output() in bpf_memcontrol.c move the
declaration from v1-specific memcontrol-v1.h to memcontrol.h.

Signed-off-by: Roman Gushchin <roman.gushchin@...ux.dev>
Acked-by: Michal Hocko <mhocko@...e.com>
Acked-by: Shakeel Butt <shakeel.butt@...ux.dev>
---
 include/linux/memcontrol.h | 1 +
 mm/memcontrol-v1.h         | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 6a48398a1f4e..b309d13110af 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -950,6 +950,7 @@ static inline void mod_memcg_page_state(struct page *page,
 }
 
 unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx);
+unsigned long memcg_page_state_output(struct mem_cgroup *memcg, int item);
 unsigned long lruvec_page_state(struct lruvec *lruvec, enum node_stat_item idx);
 unsigned long lruvec_page_state_local(struct lruvec *lruvec,
 				      enum node_stat_item idx);
diff --git a/mm/memcontrol-v1.h b/mm/memcontrol-v1.h
index 6358464bb416..a304ad418cdf 100644
--- a/mm/memcontrol-v1.h
+++ b/mm/memcontrol-v1.h
@@ -27,7 +27,6 @@ unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap);
 void drain_all_stock(struct mem_cgroup *root_memcg);
 
 unsigned long memcg_events(struct mem_cgroup *memcg, int event);
-unsigned long memcg_page_state_output(struct mem_cgroup *memcg, int item);
 int memory_stat_show(struct seq_file *m, void *v);
 
 void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n);
-- 
2.52.0