From: Qian Cai <cai@lca.pw>
Date: Mon, 23 Sep 2019 22:37:19 +0000 (-0700)
Subject: mm/memcontrol.c: fix a -Wunused-function warning
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4d0e3230a56a75bf26d74b3f4b6cb05a0e9fae60;p=linux.git

mm/memcontrol.c: fix a -Wunused-function warning

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@lca.pw>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 80131025f2da5..701c1ab79d243 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4930,11 +4930,6 @@ 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);