netdev - [PATCH net] devlink rate: Remove unnecessary 'static' from a couple places

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Message-ID: <20250918101506.3671052-1-cratiu@nvidia.com>
Date: Thu, 18 Sep 2025 13:15:06 +0300
From: Cosmin Ratiu <cratiu@...dia.com>
To: <netdev@...r.kernel.org>, <cratiu@...dia.com>
CC: Jiri Pirko <jiri@...nulli.us>, "David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, "Paolo
 Abeni" <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Vlad Buslov
	<vladbu@...dia.com>, Dmytro Linkin <dlinkin@...dia.com>
Subject: [PATCH net] devlink rate: Remove unnecessary 'static' from a couple places

devlink_rate_node_get_by_name() and devlink_rate_nodes_destroy() have a
couple of unnecessary static variables for iterating over devlink rates.

This could lead to races/corruption/unhappiness if two concurrent
operations execute the same function.

Remove 'static' from both. It's amazing this was missed for 4+ years.
While at it, I confirmed there are no more examples of this mistake in
net/ with 1, 2 or 3 levels of indentation.

Fixes: a8ecb93ef03d ("devlink: Introduce rate nodes")
Signed-off-by: Cosmin Ratiu <cratiu@...dia.com>
---
 net/devlink/rate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/devlink/rate.c b/net/devlink/rate.c
index 110b3fa8a0b1..264fb82cba19 100644
--- a/net/devlink/rate.c
+++ b/net/devlink/rate.c
@@ -34,7 +34,7 @@ devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
 static struct devlink_rate *
 devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
 {
-	static struct devlink_rate *devlink_rate;
+	struct devlink_rate *devlink_rate;
 
 	list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
 		if (devlink_rate_is_node(devlink_rate) &&
@@ -819,8 +819,8 @@ EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
  */
 void devl_rate_nodes_destroy(struct devlink *devlink)
 {
-	static struct devlink_rate *devlink_rate, *tmp;
 	const struct devlink_ops *ops = devlink->ops;
+	struct devlink_rate *devlink_rate, *tmp;
 
 	devl_assert_locked(devlink);
 
-- 
2.45.0