Repository : ssh://git@open-mesh.org/batman-adv
On branch : master
commit aebb6e7f02e480a6bbae9833ecaf7e11e316f7c6 Author: Sven Eckelmann sven@narfation.org Date: Fri Jul 15 17:39:32 2016 +0200
batman-adv: Place kref_get for tvlv_container near use
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 causedy incorrect reference counting.
Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Marek Lindner mareklindner@neomailbox.ch
aebb6e7f02e480a6bbae9833ecaf7e11e316f7c6 net/batman-adv/tvlv.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c index 3d1cf0f..3533867 100644 --- a/net/batman-adv/tvlv.c +++ b/net/batman-adv/tvlv.c @@ -257,8 +257,13 @@ void batadv_tvlv_container_register(struct batadv_priv *bat_priv, spin_lock_bh(&bat_priv->tvlv.container_list_lock); tvlv_old = batadv_tvlv_container_get(bat_priv, type, version); batadv_tvlv_container_remove(bat_priv, tvlv_old); + + kref_get(&tvlv_new->refcount); hlist_add_head(&tvlv_new->list, &bat_priv->tvlv.container_list); spin_unlock_bh(&bat_priv->tvlv.container_list_lock); + + /* don't return reference to new tvlv_container */ + batadv_tvlv_container_put(tvlv_new); }
/**