The patch titled
Subject: mm/memcontrol.c: make mem_cgroup_id_get_many() __maybe_unused
has been added to the -mm tree. Its filename is
mm-make-mem_cgroup_id_get_many-__maybe_unused.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-make-mem_cgroup_id_get_many-__maybe_unused.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-make-mem_cgroup_id_get_many-__maybe_unused.patch
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------------------------------------------------------
From: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
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@xxxxxxx
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Chris Down <chris@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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
@@ -4840,7 +4840,8 @@ 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);
}
_
Patches currently in -mm which might be from vincenzo.frascino@xxxxxxx are
mm-make-mem_cgroup_id_get_many-__maybe_unused.patch
