diff mbox

[net-next,1/3,v2] team: Do not hold rcu_read_lock when running netlink cmds

Message ID 20111116215554.GB9631@minipsycho
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Jiri Pirko Nov. 16, 2011, 9:55 p.m. UTC 
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
---
 drivers/net/team/team.c |   11 +++++------
 1 files changed, 5 insertions(+), 6 deletions(-)

Comments

David Miller Nov. 17, 2011, 1:36 a.m. UTC | #1 
From: Jiri Pirko <jpirko@redhat.com>
Date: Wed, 16 Nov 2011 22:55:54 +0100

> Signed-off-by: Jiri Pirko <jpirko@redhat.com>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 60672bb..e5390c7 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1043,8 +1043,7 @@  err_msg_put:
 
 /*
  * Netlink cmd functions should be locked by following two functions.
- * To ensure team_uninit would not be called in between, hold rcu_read_lock
- * all the time.
+ * Since dev gets held here, that ensures dev won't disappear in between.
  */
 static struct team *team_nl_team_get(struct genl_info *info)
 {
@@ -1057,10 +1056,10 @@  static struct team *team_nl_team_get(struct genl_info *info)
 		return NULL;
 
 	ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
-	rcu_read_lock();
-	dev = dev_get_by_index_rcu(net, ifindex);
+	dev = dev_get_by_index(net, ifindex);
 	if (!dev || dev->netdev_ops != &team_netdev_ops) {
-		rcu_read_unlock();
+		if (dev)
+			dev_put(dev);
 		return NULL;
 	}
 
@@ -1072,7 +1071,7 @@  static struct team *team_nl_team_get(struct genl_info *info)
 static void team_nl_team_put(struct team *team)
 {
 	spin_unlock(&team->lock);
-	rcu_read_unlock();
+	dev_put(team->dev);
 }
 
 static int team_nl_send_generic(struct genl_info *info, struct team *team,