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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/ipv6
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/ipv6')
-rw-r--r--net/ipv6/inet6_connection_sock.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 2f3bbe569e8f..6927f3fb5597 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -124,7 +124,7 @@ struct request_sock *inet6_csk_search_req(struct sock *sk,
u32 hash = inet6_synq_hash(raddr, rport, lopt->hash_rnd,
lopt->nr_table_entries);
- write_lock(&icsk->icsk_accept_queue.syn_wait_lock);
+ spin_lock(&icsk->icsk_accept_queue.syn_wait_lock);
for (req = lopt->syn_table[hash]; req != NULL; req = req->dl_next) {
const struct inet_request_sock *ireq = inet_rsk(req);
@@ -138,7 +138,7 @@ struct request_sock *inet6_csk_search_req(struct sock *sk,
break;
}
}
- write_unlock(&icsk->icsk_accept_queue.syn_wait_lock);
+ spin_unlock(&icsk->icsk_accept_queue.syn_wait_lock);
return req;
}