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UPSTREAM: wireguard: socket: remove extra call to synchronize_net

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synchronize_net() is a wrapper around synchronize_rcu(), so there's no
point in having synchronize_net and synchronize_rcu back to back,
despite the documentation comment suggesting maybe it's somewhat useful,
"Wait for packets currently being received to be done." This commit
removes the extra call.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 1fbc33b0a7feb6ca72bf7dc8a05d81485ee8ee2e)
Bug: 152722841
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I4c7527eea744b87364bc91b82cd7d14cc10e9b06
This commit is contained in:
Jason A. Donenfeld 2020-02-14 23:57:23 +01:00 • committed by Alexander Martinz
commit f2c6be895d
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1
drivers/net/wireguard/socket.c
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@ -432,7 +432,6 @@ void wg_socket_reinit(struct wg_device *wg, struct sock *new4,
wg->incoming_port = ntohs(inet_sk(new4)->inet_sport);
mutex_unlock(&wg->socket_update_lock);
synchronize_rcu();
synchronize_net();
sock_free(old4);
sock_free(old6);
}