From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: cgroups@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v2] mm: Make mem_cgroup_id_get_many() __maybe_unused
Date: Thu, 5 Mar 2020 16:43:54 +0000 [thread overview]
Message-ID: <20200305164354.48147-1-vincenzo.frascino@arm.com> (raw)
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.
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
mm/memcontrol.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d09776cd6e10..2b9533ed52f5 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4794,7 +4794,8 @@ 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);
}
--
2.25.1
next reply other threads:[~2020-03-05 16:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-05 16:43 Vincenzo Frascino [this message]
2020-03-05 17:22 ` [PATCH v2] mm: Make mem_cgroup_id_get_many() __maybe_unused Johannes Weiner
2020-03-05 18:36 ` Chris Down
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