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batman-adv: Place kref_get for orig_node near use

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It is hard to understand why the refcnt is increased when it isn't done
near the actual place the new reference is used. So using kref_get right
before the place which requires the reference and in the same function
helps to avoid accidental problems caused by incorrect reference counting.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Sven Eckelmann
2016-07-15 17:39:21 +02:00
committed by Simon Wunderlich
parent 8427445886
commit 55db2d5902
5 changed files with 10 additions and 12 deletions
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2
net/batman-adv/gateway_client.c
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@@ -339,8 +339,8 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
if (!gw_node)
return;
kref_get(&orig_node->refcount);
INIT_HLIST_NODE(&gw_node->list);
kref_get(&orig_node->refcount);
gw_node->orig_node = orig_node;
gw_node->bandwidth_down = ntohl(gateway->bandwidth_down);
gw_node->bandwidth_up = ntohl(gateway->bandwidth_up);