diff options
| author |   Eric Dumazet <edumazet@google.com> | 2016-05-17 17:44:08 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-05-19 11:36:49 -0700 |
| commit | 38036629cded6b96a9f9689758a88d067c4d4d44 (patch) | |
| tree | 419a1d0d02014f0fc416939a93792d1c4aee24f6 /net/rds | |
| parent | ocfs2/cluster: block BH in TCP callbacks (diff) | |
| download | linux-dev-38036629cded6b96a9f9689758a88d067c4d4d44.tar.xz linux-dev-38036629cded6b96a9f9689758a88d067c4d4d44.zip | |
rds: tcp: block BH in TCP callbacks
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds')
| -rw-r--r-- | net/rds/tcp_connect.c | 4 | ||||
| -rw-r--r-- | net/rds/tcp_listen.c | 4 | ||||
| -rw-r--r-- | net/rds/tcp_recv.c | 4 | ||||
| -rw-r--r-- | net/rds/tcp_send.c | 4 |
4 files changed, 8 insertions, 8 deletions
diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c index 49a3fcfed360..fb82e0a0bf89 100644 --- a/net/rds/tcp_connect.c +++ b/net/rds/tcp_connect.c @@ -43,7 +43,7 @@ void rds_tcp_state_change(struct sock *sk) struct rds_connection *conn; struct rds_tcp_connection *tc; - read_lock(&sk->sk_callback_lock); + read_lock_bh(&sk->sk_callback_lock); conn = sk->sk_user_data; if (!conn) { state_change = sk->sk_state_change; @@ -69,7 +69,7 @@ void rds_tcp_state_change(struct sock *sk) break; } out: - read_unlock(&sk->sk_callback_lock); + read_unlock_bh(&sk->sk_callback_lock); state_change(sk); } diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c index be263cdf268b..3fa367945105 100644 --- a/net/rds/tcp_listen.c +++ b/net/rds/tcp_listen.c @@ -166,7 +166,7 @@ void rds_tcp_listen_data_ready(struct sock *sk) rdsdebug("listen data ready sk %p\n", sk); - read_lock(&sk->sk_callback_lock); + read_lock_bh(&sk->sk_callback_lock); ready = sk->sk_user_data; if (!ready) { /* check for teardown race */ ready = sk->sk_data_ready; @@ -183,7 +183,7 @@ void rds_tcp_listen_data_ready(struct sock *sk) rds_tcp_accept_work(sk); out: - read_unlock(&sk->sk_callback_lock); + read_unlock_bh(&sk->sk_callback_lock); ready(sk); } diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c index d75d8b56a9e3..c3196f9d070a 100644 --- a/net/rds/tcp_recv.c +++ b/net/rds/tcp_recv.c @@ -301,7 +301,7 @@ void rds_tcp_data_ready(struct sock *sk) rdsdebug("data ready sk %p\n", sk); - read_lock(&sk->sk_callback_lock); + read_lock_bh(&sk->sk_callback_lock); conn = sk->sk_user_data; if (!conn) { /* check for teardown race */ ready = sk->sk_data_ready; @@ -315,7 +315,7 @@ void rds_tcp_data_ready(struct sock *sk) if (rds_tcp_read_sock(conn, GFP_ATOMIC) == -ENOMEM) queue_delayed_work(rds_wq, &conn->c_recv_w, 0); out: - read_unlock(&sk->sk_callback_lock); + read_unlock_bh(&sk->sk_callback_lock); ready(sk); } diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c index 2894e6095e3b..22d0f2020a79 100644 --- a/net/rds/tcp_send.c +++ b/net/rds/tcp_send.c @@ -180,7 +180,7 @@ void rds_tcp_write_space(struct sock *sk) struct rds_connection *conn; struct rds_tcp_connection *tc; - read_lock(&sk->sk_callback_lock); + read_lock_bh(&sk->sk_callback_lock); conn = sk->sk_user_data; if (!conn) { write_space = sk->sk_write_space; @@ -200,7 +200,7 @@ void rds_tcp_write_space(struct sock *sk) queue_delayed_work(rds_wq, &conn->c_send_w, 0); out: - read_unlock(&sk->sk_callback_lock); + read_unlock_bh(&sk->sk_callback_lock); /* * write_space is only called when data leaves tcp's send queue if |