commit
310b4816a5d8082416b4ab83e5a7b3cb92883a4d upstream.
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 <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20170501145340.17e8ef86@canb.auug.org.au
Signed-off-by: Tejun Heo <tj@kernel.org>
[sw0312.kim: backport from mainline to fix build warning caused by the backported commite
54215a9bc4d ("cgroup_get() expected ...") in rpi-4.9.y]
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Change-Id: Ib70e3d4401f9e691940168ac7c4d819ab206c447
return !(cgrp->self.flags & CSS_ONLINE);
}
-static void cgroup_get(struct cgroup *cgrp)
+static void __maybe_unused cgroup_get(struct cgroup *cgrp)
{
css_get(&cgrp->self);
}