From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
To: Alexander Aring <alex.aring@gmail.com>,
Stefan Schmidt <stefan@datenfreihafen.org>,
Miquel Raynal <miquel.raynal@bootlin.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
David Girault <david.girault@qorvo.com>
Cc: "Joel Fernandes (Google)" <joel@joelfernandes.org>,
"Paul E . McKenney" <paulmck@kernel.org>,
Alexander Aring <aahringo@redhat.com>,
linux-wpan@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 12/14] mac802154: Rename kfree_rcu() to kvfree_rcu_mightsleep()
Date: Wed, 15 Mar 2023 18:18:59 +0000 [thread overview]
Message-ID: <20230315181902.4177819-12-joel@joelfernandes.org> (raw)
In-Reply-To: <20230315181902.4177819-1-joel@joelfernandes.org>
The k[v]free_rcu() macro's single-argument form is deprecated.
Therefore switch to the new k[v]free_rcu_mightsleep() variant. The goal
is to avoid accidental use of the single-argument forms, which can
introduce functionality bugs in atomic contexts and latency bugs in
non-atomic contexts.
The callers are holding a mutex so the context allows blocking. Hence
using the API with a single argument will be fine, but use its new name.
There is no functionality change with this patch.
Fixes: 57588c71177f ("mac802154: Handle passive scanning")
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
net/mac802154/scan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/mac802154/scan.c b/net/mac802154/scan.c
index 9b0933a185eb..5c191bedd72c 100644
--- a/net/mac802154/scan.c
+++ b/net/mac802154/scan.c
@@ -52,7 +52,7 @@ static int mac802154_scan_cleanup_locked(struct ieee802154_local *local,
request = rcu_replace_pointer(local->scan_req, NULL, 1);
if (!request)
return 0;
- kfree_rcu(request);
+ kvfree_rcu_mightsleep(request);
/* Advertize first, while we know the devices cannot be removed */
if (aborted)
@@ -403,7 +403,7 @@ int mac802154_stop_beacons_locked(struct ieee802154_local *local,
request = rcu_replace_pointer(local->beacon_req, NULL, 1);
if (!request)
return 0;
- kfree_rcu(request);
+ kvfree_rcu_mightsleep(request);
nl802154_beaconing_done(wpan_dev);
--
2.40.0.rc1.284.g88254d51c5-goog
next parent reply other threads:[~2023-03-15 18:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230315181902.4177819-1-joel@joelfernandes.org>
2023-03-15 18:18 ` Joel Fernandes (Google) [this message]
2023-03-16 16:41 ` [PATCH v2 12/14] mac802154: Rename kfree_rcu() to kvfree_rcu_mightsleep() Stefan Schmidt
2023-03-16 18:06 ` Joel Fernandes
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