cgroup: net_cls: Pass in task to sock_update_classid()

sock_update_classid() assumes that the update operation always are
applied on the current task. sock_update_classid() needs to know on
which tasks to work on in order to be able to migrate task between
cgroups using the struct cgroup_subsys attach() callback.

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Glauber Costa <glommer@parallels.com>
Cc: Joe Perches <joe@perches.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: <netdev@vger.kernel.org>
Cc: <cgroups@vger.kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/socket.c b/net/socket.c
index d92c490e66fa..f1a481ab7532 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -620,7 +620,7 @@ static inline int __sock_sendmsg_nosec(struct kiocb *iocb, struct socket *sock,
 {
         struct sock_iocb *si = kiocb_to_siocb(iocb);
 
-        sock_update_classid(sock->sk);
+        sock_update_classid(sock->sk, current);
 
         si->sock = sock;
         si->scm = NULL;
@@ -784,7 +784,7 @@ static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock,
 {
         struct sock_iocb *si = kiocb_to_siocb(iocb);
 
-        sock_update_classid(sock->sk);
+        sock_update_classid(sock->sk, current);
 
         si->sock = sock;
         si->scm = NULL;
@@ -896,7 +896,7 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
         if (unlikely(!sock->ops->splice_read))
                 return -EINVAL;
 
-        sock_update_classid(sock->sk);
+        sock_update_classid(sock->sk, current);
 
         return sock->ops->splice_read(sock, ppos, pipe, len, flags);
 }
@@ -3437,7 +3437,7 @@ EXPORT_SYMBOL(kernel_setsockopt);
 int kernel_sendpage(struct socket *sock, struct page *page, int offset,
                     size_t size, int flags)
 {
-        sock_update_classid(sock->sk);
+        sock_update_classid(sock->sk, current);
 
         if (sock->ops->sendpage)
                 return sock->ops->sendpage(sock, page, offset, size, flags);