net: tcp_memcontrol: simplify linkage between socket and page counter

There won't be any separate counters for socket memory consumed by
protocols other than TCP in the future.  Remove the indirection and link
sockets directly to their owning memory cgroup.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
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>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index d9df80deba31..8ea19977ea53 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -289,8 +289,8 @@ extern int tcp_memory_pressure;
 /* optimized version of sk_under_memory_pressure() for TCP sockets */
 static inline bool tcp_under_memory_pressure(const struct sock *sk)
 {
-        if (mem_cgroup_sockets_enabled && sk->sk_cgrp &&
-            mem_cgroup_under_socket_pressure(sk->sk_cgrp))
+        if (mem_cgroup_sockets_enabled && sk->sk_memcg &&
+            mem_cgroup_under_socket_pressure(sk->sk_memcg))
                 return true;
 
         return tcp_memory_pressure;