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authorEric Dumazet <edumazet@google.com>2015-03-22 20:22:21 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-23 23:52:26 +0300
commitb282705336e03fc7b9377a278939594870a40f96 (patch)
treefbb9b0bf127fb3910e65b6ff6566fc12396385e4 /net/ipv4/inet_diag.c
parent8b929ab12fb2ab960adb3c3ec8d107fef5ff3243 (diff)
downloadlinux-b282705336e03fc7b9377a278939594870a40f96.tar.xz
net: convert syn_wait_lock to a spinlock
This is a low hanging fruit, as we'll get rid of syn_wait_lock eventually. We hold syn_wait_lock for such small sections, that it makes no sense to use a read/write lock. A spin lock is simply faster. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_diag.c')
-rw-r--r--net/ipv4/inet_diag.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index f984b2001d0a..76322c9867d5 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -728,7 +728,7 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
entry.family = sk->sk_family;
- read_lock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
+ spin_lock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
lopt = icsk->icsk_accept_queue.listen_opt;
if (!lopt || !listen_sock_qlen(lopt))
@@ -776,7 +776,7 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
}
out:
- read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
+ spin_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
return err;
}