From c1514c0aac77eb4a2be5d05e4d982f7a9f43063d Mon Sep 17 00:00:00 2001 From: Vincenzo Frascino Date: Wed, 1 Apr 2020 21:07:13 -0700 Subject: [PATCH] mm/memcontrol.c: make mem_cgroup_id_get_many() __maybe_unused mem_cgroup_id_get_many() is currently used only when MMU or MEMCG_SWAP configuration options are enabled. Having them disabled triggers the following warning at compile time: linux/mm/memcontrol.c:4797:13: warning: `mem_cgroup_id_get_many' defined but not used [-Wunused-function] static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n) Make mem_cgroup_id_get_many() __maybe_unused to address the issue. Signed-off-by: Vincenzo Frascino Signed-off-by: Andrew Morton Acked-by: Johannes Weiner Acked-by: Chris Down Cc: Michal Hocko Cc: Vladimir Davydov Link: http://lkml.kernel.org/r/20200305164354.48147-1-vincenzo.frascino@arm.com Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 6f64bff8fe17..badd043d58ac 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4863,7 +4863,8 @@ static void mem_cgroup_id_remove(struct mem_cgroup *memcg) } } -static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n) +static void __maybe_unused mem_cgroup_id_get_many(struct mem_cgroup *memcg, + unsigned int n) { refcount_add(n, &memcg->id.ref); }