From: David Howells <dhowells@redhat.com>
Date: Mon, 10 Oct 2022 12:13:47 +0000 (+0100)
Subject: rxrpc: Don't use sk->sk_receive_queue.lock to guard socket state changes
X-Git-Tag: v6.6.17~5932^2~71^2~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=81f2e8adc0fd10847637873dafe8610f3fb4cdff;p=platform%2Fkernel%2Flinux-rpi.git

rxrpc: Don't use sk->sk_receive_queue.lock to guard socket state changes

Don't use sk->sk_receive_queue.lock to guard socket state changes as the
socket mutex is sufficient.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
---

diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 7a0dc01741e7..8ad4d85acb0b 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -812,14 +812,12 @@ static int rxrpc_shutdown(struct socket *sock, int flags)
 
 	lock_sock(sk);
 
-	spin_lock_bh(&sk->sk_receive_queue.lock);
 	if (sk->sk_state < RXRPC_CLOSE) {
 		sk->sk_state = RXRPC_CLOSE;
 		sk->sk_shutdown = SHUTDOWN_MASK;
 	} else {
 		ret = -ESHUTDOWN;
 	}
-	spin_unlock_bh(&sk->sk_receive_queue.lock);
 
 	rxrpc_discard_prealloc(rx);
 
@@ -872,9 +870,7 @@ static int rxrpc_release_sock(struct sock *sk)
 		break;
 	}
 
-	spin_lock_bh(&sk->sk_receive_queue.lock);
 	sk->sk_state = RXRPC_CLOSE;
-	spin_unlock_bh(&sk->sk_receive_queue.lock);
 
 	if (rx->local && rcu_access_pointer(rx->local->service) == rx) {
 		write_lock(&rx->local->services_lock);