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authorEric Dumazet <edumazet@google.com>2020-09-30 05:54:56 -0700
committerDavid S. Miller <davem@davemloft.net>2020-09-30 14:21:30 -0700
commitb6b6d6533a14b5ddcf9f9c5239fc3721fc6beda0 (patch)
tree3ebc44f6fa89883d9f46387b5e4337475790a1f8 /net/ipv4/tcp.c
parent20c168be684a97b084525906eb7ed017b7f9c0b8 (diff)
downloadlinux-b6b6d6533a14b5ddcf9f9c5239fc3721fc6beda0.tar.bz2
inet: remove icsk_ack.blocked
TCP has been using it to work around the possibility of tcp_delack_timer() finding the socket owned by user. After commit 6f458dfb4092 ("tcp: improve latencies of timer triggered events") we added TCP_DELACK_TIMER_DEFERRED atomic bit for more immediate recovery, so we can get rid of icsk_ack.blocked This frees space that following patch will reuse. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp.c')
-rw-r--r--net/ipv4/tcp.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 2a8bfa89a515..ed2805564424 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1538,10 +1538,8 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied)
if (inet_csk_ack_scheduled(sk)) {
const struct inet_connection_sock *icsk = inet_csk(sk);
- /* Delayed ACKs frequently hit locked sockets during bulk
- * receive. */
- if (icsk->icsk_ack.blocked ||
- /* Once-per-two-segments ACK was not sent by tcp_input.c */
+
+ if (/* Once-per-two-segments ACK was not sent by tcp_input.c */
tp->rcv_nxt - tp->rcv_wup > icsk->icsk_ack.rcv_mss ||
/*
* If this read emptied read buffer, we send ACK, if