From 10bbf1652c1cca9819e98d56f3432c56d7a2d229 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Thu, 21 Sep 2023 20:28:11 +0000
Subject: net: implement lockless SO_PRIORITY

This is a followup of 8bf43be799d4 ("net: annotate data-races
around sk->sk_priority").

sk->sk_priority can be read and written without holding the socket lock.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/sched/em_meta.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'net/sched')

diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index da34fd4c9269..09d8afd04a2a 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -546,7 +546,7 @@ META_COLLECTOR(int_sk_prio)
 		*err = -1;
 		return;
 	}
-	dst->value = sk->sk_priority;
+	dst->value = READ_ONCE(sk->sk_priority);
 }
 
 META_COLLECTOR(int_sk_rcvlowat)
-- 
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