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tcp_metrics: annotate data-races around tm->tcpm_lock
authorEric Dumazet <edumazet@google.com>
Wed, 2 Aug 2023 13:14:57 +0000 (13:14 +0000)
committerJakub Kicinski <kuba@kernel.org>
Thu, 3 Aug 2023 17:58:24 +0000 (10:58 -0700)
commit285ce119a3c6c4502585936650143e54c8692788
treea51bad7b7b019df43ffd6fc1029481076a14a765
parent949ad62a5d5311d36fce2e14fe5fed3f936da51c
tcp_metrics: annotate data-races around tm->tcpm_lock

tm->tcpm_lock can be read or written locklessly.

Add needed READ_ONCE()/WRITE_ONCE() to document this.

Fixes: 51c5d0c4b169 ("tcp: Maintain dynamic metrics in local cache.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20230802131500.1478140-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv4/tcp_metrics.c