netdev - [PATCH net-next 3/5] mptcp: use lockdep_assert_held

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Date:   Fri, 24 Sep 2021 14:12:36 -0700
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Paolo Abeni <pabeni@...hat.com>, davem@...emloft.net,
        kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>
Subject: [PATCH net-next 3/5] mptcp: use lockdep_assert_held_once() instead of open-coding it

From: Paolo Abeni <pabeni@...hat.com>

We have a few more places where the mptcp code duplicates
lockdep_assert_held_once(). Let's use the existing macro and
avoid a bunch of compiler's conditional.

Reviewed-by: Matthieu Baerts <matthieu.baerts@...sares.net>
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
 net/mptcp/protocol.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 3d1757b8ef69..87ee409d68ab 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -956,9 +956,7 @@ static void __mptcp_update_wmem(struct sock *sk)
 {
 	struct mptcp_sock *msk = mptcp_sk(sk);
 
-#ifdef CONFIG_LOCKDEP
-	WARN_ON_ONCE(!lockdep_is_held(&sk->sk_lock.slock));
-#endif
+	lockdep_assert_held_once(&sk->sk_lock.slock);
 
 	if (!msk->wmem_reserved)
 		return;
@@ -1117,9 +1115,8 @@ static void __mptcp_clean_una(struct sock *sk)
 
 static void __mptcp_clean_una_wakeup(struct sock *sk)
 {
-#ifdef CONFIG_LOCKDEP
-	WARN_ON_ONCE(!lockdep_is_held(&sk->sk_lock.slock));
-#endif
+	lockdep_assert_held_once(&sk->sk_lock.slock);
+
 	__mptcp_clean_una(sk);
 	mptcp_write_space(sk);
 }
-- 
2.33.0