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batman-adv: don't use call_rcu if not needed 

batadv_tt_global_entry_free_ref uses call_rcu to schedule a
function which will only free the global entry itself.

For this reason call_rcu is useless and kfree_rcu can be
used to simplify the code.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Antonio Quartulli 2013-05-07 00:29:22 +02:00 committed by Antonio Quartulli
parent d7ee88d048
commit 2102605947
1 changed files with 6 additions and 14 deletions
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20
net/batman-adv/translation-table.c
View File

@ -117,25 +117,17 @@ batadv_tt_local_entry_free_ref(struct batadv_tt_local_entry *tt_local_entry)
kfree_rcu(tt_local_entry, common.rcu);
}
static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu)
{
struct batadv_tt_common_entry *tt_common_entry;
struct batadv_tt_global_entry *tt_global_entry;
tt_common_entry = container_of(rcu, struct batadv_tt_common_entry, rcu);
tt_global_entry = container_of(tt_common_entry,
struct batadv_tt_global_entry, common);
kfree(tt_global_entry);
}
/**
* batadv_tt_global_entry_free_ref - decrement the refcounter for a
* tt_global_entry and possibly free it
* @tt_global_entry: the object to free
*/
static void
batadv_tt_global_entry_free_ref(struct batadv_tt_global_entry *tt_global_entry)
{
if (atomic_dec_and_test(&tt_global_entry->common.refcount)) {
batadv_tt_global_del_orig_list(tt_global_entry);
call_rcu(&tt_global_entry->common.rcu,
batadv_tt_global_entry_free_rcu);
kfree_rcu(tt_global_entry, common.rcu);
}
}