TCP stack can now run from process context.
Use read_lock_bh(&sk->sk_callback_lock) variant to restore previous
assumption.
Fixes:
5413d1babe8f ("net: do not block BH while processing socket backlog")
Fixes:
d41a69f1d390 ("tcp: make tcp_sendmsg() aware of socket backlog")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- read_lock(&sk->sk_callback_lock);
+ read_lock_bh(&sk->sk_callback_lock);
con = sock2con(sk);
if (con && test_bit(CF_CONNECTED, &con->flags)) {
conn_get(con);
if (!queue_work(con->server->rcv_wq, &con->rwork))
conn_put(con);
}
con = sock2con(sk);
if (con && test_bit(CF_CONNECTED, &con->flags)) {
conn_get(con);
if (!queue_work(con->server->rcv_wq, &con->rwork))
conn_put(con);
}
- read_unlock(&sk->sk_callback_lock);
+ read_unlock_bh(&sk->sk_callback_lock);
}
static void sock_write_space(struct sock *sk)
{
struct tipc_conn *con;
}
static void sock_write_space(struct sock *sk)
{
struct tipc_conn *con;
- read_lock(&sk->sk_callback_lock);
+ read_lock_bh(&sk->sk_callback_lock);
con = sock2con(sk);
if (con && test_bit(CF_CONNECTED, &con->flags)) {
conn_get(con);
if (!queue_work(con->server->send_wq, &con->swork))
conn_put(con);
}
con = sock2con(sk);
if (con && test_bit(CF_CONNECTED, &con->flags)) {
conn_get(con);
if (!queue_work(con->server->send_wq, &con->swork))
conn_put(con);
}
- read_unlock(&sk->sk_callback_lock);
+ read_unlock_bh(&sk->sk_callback_lock);
}
static void tipc_register_callbacks(struct socket *sock, struct tipc_conn *con)
}
static void tipc_register_callbacks(struct socket *sock, struct tipc_conn *con)