Subject: [PATCH cgroup/for-4.12] cgroup: mark cgroup_get() with __maybe_unused

From: Tejun Heo <[email-masked]>
Date: Mon, 1 May 2017 15:41:32 -0400

>>From 310b4816a5d8082416b4ab83e5a7b3cb92883a4d Mon Sep 17 00:00:00 2001
From: Tejun Heo <[email-masked]>
Date: Mon, 1 May 2017 15:24:14 -0400

a590b90d472f ("cgroup: fix spurious warnings on cgroup_is_dead() from
cgroup_sk_alloc()") converted most cgroup_get() usages to
cgroup_get_live() leaving cgroup_sk_alloc() the sole user of
cgroup_get().  When !CONFIG_SOCK_CGROUP_DATA, this ends up triggering
unused warning for cgroup_get().

Silence the warning by adding __maybe_unused to cgroup_get().

Reported-by: Stephen Rothwell <[email-masked]>
Link: http://lkml.kernel.org/r/[email-masked]
Signed-off-by: Tejun Heo <[email-masked]>
---
Applied to cgroup/for-4.12.

Thanks!

 kernel/cgroup/cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 38d9386..f2bcc11 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -436,7 +436,7 @@ struct cgroup_subsys_state *cgroup_get_e_css(struct cgroup *cgrp,
 	return css;
 }
 
-static void cgroup_get(struct cgroup *cgrp)
+static void __maybe_unused cgroup_get(struct cgroup *cgrp)
 {
 	css_get(&cgrp->self);
 }
-- 
2.9.3