aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorGlauber Costa <glommer@parallels.com>2012-01-05 20:16:39 +0000
committerDavid S. Miller <davem@davemloft.net>2012-01-07 10:16:34 -0800
commitf3f511e1ce6f1a6f0a5bb8320e9f802e76f6b999 (patch)
treebedb8b38bec1bdb3fa7159bc61822488984d3ce0 /include
parent356b95424cfb456e14a59eaa579422ce014c424b (diff)
net: fix sock_clone reference mismatch with tcp memcontrol
Sockets can also be created through sock_clone. Because it copies all data in the sock structure, it also copies the memcg-related pointer, and all should be fine. However, since we now use reference counts in socket creation, we are left with some sockets that have no reference counts. It matters when we destroy them, since it leads to a mismatch. Signed-off-by: Glauber Costa <glommer@parallels.com> CC: David S. Miller <davem@davemloft.net> CC: Greg Thelen <gthelen@google.com> CC: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com> CC: Laurent Chavey <chavey@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/sock.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index bb972d254df..0ed65e3a0be 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1103,6 +1103,12 @@ sk_sockets_allocated_read_positive(struct sock *sk)
return percpu_counter_sum_positive(prot->sockets_allocated);
}
+static inline void sk_update_clone(const struct sock *sk, struct sock *newsk)
+{
+ if (mem_cgroup_sockets_enabled && sk->sk_cgrp)
+ sock_update_memcg(newsk);
+}
+
static inline int
proto_sockets_allocated_sum_positive(struct proto *prot)
{