diff options
Diffstat (limited to 'net/rds/tcp.c')
| -rw-r--r-- | net/rds/tcp.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/net/rds/tcp.c b/net/rds/tcp.c index 5327d130c4b5..73ee2771093d 100644 --- a/net/rds/tcp.c +++ b/net/rds/tcp.c @@ -487,14 +487,27 @@ struct rds_tcp_net { /* All module specific customizations to the RDS-TCP socket should be done in * rds_tcp_tune() and applied after socket creation. */ -void rds_tcp_tune(struct socket *sock) +bool rds_tcp_tune(struct socket *sock) { struct sock *sk = sock->sk; struct net *net = sock_net(sk); - struct rds_tcp_net *rtn = net_generic(net, rds_tcp_netid); + struct rds_tcp_net *rtn; tcp_sock_set_nodelay(sock->sk); lock_sock(sk); + /* TCP timer functions might access net namespace even after + * a process which created this net namespace terminated. + */ + if (!sk->sk_net_refcnt) { + if (!maybe_get_net(net)) { + release_sock(sk); + return false; + } + sk->sk_net_refcnt = 1; + netns_tracker_alloc(net, &sk->ns_tracker, GFP_KERNEL); + sock_inuse_add(net, 1); + } + rtn = net_generic(net, rds_tcp_netid); if (rtn->sndbuf_size > 0) { sk->sk_sndbuf = rtn->sndbuf_size; sk->sk_userlocks |= SOCK_SNDBUF_LOCK; @@ -504,6 +517,7 @@ void rds_tcp_tune(struct socket *sock) sk->sk_userlocks |= SOCK_RCVBUF_LOCK; } release_sock(sk); + return true; } static void rds_tcp_accept_worker(struct work_struct *work) |