From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: [patch 073/155] mm/memcontrol.c: make mem_cgroup_id_get_many() __maybe_unused Date: Wed, 01 Apr 2020 21:07:13 -0700 Message-ID: <20200402040713.Uh_yvY9Nb%akpm@linux-foundation.org> References: <20200401210155.09e3b9742e1c6e732f5a7250@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.29.99]:58086 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727746AbgDBEHR (ORCPT ); Thu, 2 Apr 2020 00:07:17 -0400 In-Reply-To: <20200401210155.09e3b9742e1c6e732f5a7250@linux-foundation.org> Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: akpm@linux-foundation.org, chris@chrisdown.name, hannes@cmpxchg.org, linux-mm@kvack.org, mhocko@kernel.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, vdavydov.dev@gmail.com, vincenzo.frascino@arm.com From: Vincenzo Frascino Subject: 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. Link: http://lkml.kernel.org/r/20200305164354.48147-1-vincenzo.frascino@arm.com Signed-off-by: Vincenzo Frascino Acked-by: Johannes Weiner Acked-by: Chris Down Cc: Michal Hocko Cc: Vladimir Davydov Signed-off-by: Andrew Morton --- mm/memcontrol.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/memcontrol.c~mm-make-mem_cgroup_id_get_many-__maybe_unused +++ a/mm/memcontrol.c @@ -4863,7 +4863,8 @@ static void mem_cgroup_id_remove(struct } } -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); } _