diff options
| author | Eric Dumazet <edumazet@google.com> | 2016-04-29 14:16:48 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-02 17:02:25 -0400 |
| commit | fb3477c0f45aad5dfb2de559949872770e6cd431 (patch) | |
| tree | 7c5569a3a438aca4e4aeadcefc94b096e4460deb /net/ipv4/tcp.c | |
| parent | c10d9310edf5aa4a676991139d1a43ec7d87e56b (diff) | |
| download | linux-fb3477c0f45aad5dfb2de559949872770e6cd431.tar.gz linux-fb3477c0f45aad5dfb2de559949872770e6cd431.tar.xz | |
tcp: do not block bh during prequeue processing
AFAIK, nothing in current TCP stack absolutely wants BH
being disabled once socket is owned by a thread running in
process context.
As mentioned in my prior patch ("tcp: give prequeue mode some care"),
processing a batch of packets might take time, better not block BH
at all.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index b24c6ed4a04f..4787f86ae64c 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1449,12 +1449,8 @@ static void tcp_prequeue_process(struct sock *sk) NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPPREQUEUED); - /* RX process wants to run with disabled BHs, though it is not - * necessary */ - local_bh_disable(); while ((skb = __skb_dequeue(&tp->ucopy.prequeue)) != NULL) sk_backlog_rcv(sk, skb); - local_bh_enable(); /* Clear memory counter. */ tp->ucopy.memory = 0; |