[Devel] [PATCH RH7 8/9] mm/memcontrol.c: fix a -Wunused-function warning

[Pavel Tikhomirov]

From: Qian Cai <cai at lca.pw>

mem_cgroup_id_get() was introduced in commit 73f576c04b94 ("mm:memcontrol:
fix cgroup creation failure after many small jobs").

Later, it no longer has any user since the commits,

1f47b61fb407 ("mm: memcontrol: fix swap counter leak on swapout from offline cgroup")
58fa2a5512d9 ("mm: memcontrol: add sanity checks for memcg->id.ref on get/put")

so safe to remove it.

Link: http://lkml.kernel.org/r/1568648453-5482-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai at lca.pw>
Acked-by: Michal Hocko <mhocko at suse.com>
Cc: Johannes Weiner <hannes at cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev at gmail.com>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>

https://jira.vzint.dev/browse/PSBM-147036

(cherry picked from commit 4d0e3230a56a75bf26d74b3f4b6cb05a0e9fae60)
Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 mm/memcontrol.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 42ca14e637ef..098c18f4981e 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6717,11 +6717,6 @@ static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n)
 	}
 }
 
-static inline void mem_cgroup_id_get(struct mem_cgroup *memcg)
-{
-	mem_cgroup_id_get_many(memcg, 1);
-}
-
 static inline void mem_cgroup_id_put(struct mem_cgroup *memcg)
 {
 	mem_cgroup_id_put_many(memcg, 1);
-- 
2.40.1