mm: memcontrol: generalize the socket accounting jump label

The unified hierarchy memory controller is going to use this jump label
as well to control the networking callbacks.  Move it to the memory
controller code and give it a more generic name.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 2 insertions, 7 deletions

diff --git a/net/core/sock.c b/net/core/sock.c
index 3535bffa45f3..6c1c8bc93412 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -202,11 +202,6 @@ EXPORT_SYMBOL(sk_net_capable);
 static struct lock_class_key af_family_keys[AF_MAX];
 static struct lock_class_key af_family_slock_keys[AF_MAX];
 
-#if defined(CONFIG_MEMCG_KMEM)
-struct static_key memcg_socket_limit_enabled;
-EXPORT_SYMBOL(memcg_socket_limit_enabled);
-#endif
-
 /*
  * Make lock validator output more readable. (we pre-construct these
  * strings build-time, so that runtime initialization of socket
diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
index e5078259cbe3..9a22e2dfd64a 100644
--- a/net/ipv4/tcp_memcontrol.c
+++ b/net/ipv4/tcp_memcontrol.c
@@ -34,7 +34,7 @@ void tcp_destroy_cgroup(struct mem_cgroup *memcg)
                 return;
 
         if (memcg->tcp_mem.active)
-                static_key_slow_dec(&memcg_socket_limit_enabled);
+                static_key_slow_dec(&memcg_sockets_enabled_key);
 }
 
 static int tcp_update_limit(struct mem_cgroup *memcg, unsigned long nr_pages)
@@ -65,7 +65,7 @@ static int tcp_update_limit(struct mem_cgroup *memcg, unsigned long nr_pages)
                  * because when this value change, the code to process it is not
                  * patched in yet.
                  */
-                static_key_slow_inc(&memcg_socket_limit_enabled);
+                static_key_slow_inc(&memcg_sockets_enabled_key);
                 memcg->tcp_mem.active = true;
         }