net: bridge: replace call_rcu by kfree_rcu for simple kmem_cache_free callback

Since SLOB was removed and since
commit 6c6c47b063b5 ("mm, slab: call kvfree_rcu_barrier() from kmem_cache_destroy()"),
it is not necessary to use call_rcu when the callback only performs
kmem_cache_free. Use kfree_rcu() directly.

The changes were made using Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://patch.msgid.link/20241013201704.49576-9-Julia.Lawall@inria.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 642b8ccaae8ea2cd534514e575702ae3b1c30d1d..1cd7bade9b3ba30b6be40f1ccad155ffc5cdb137 100644 (file)
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -73,13 +73,6 @@ static inline int has_expired(const struct net_bridge *br,
               time_before_eq(fdb->updated + hold_time(br), jiffies);
 }
 
-static void fdb_rcu_free(struct rcu_head *head)
-{
-       struct net_bridge_fdb_entry *ent
-               = container_of(head, struct net_bridge_fdb_entry, rcu);
-       kmem_cache_free(br_fdb_cache, ent);
-}
-
 static int fdb_to_nud(const struct net_bridge *br,
                      const struct net_bridge_fdb_entry *fdb)
 {
@@ -329,7 +322,7 @@ static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f,
        if (test_and_clear_bit(BR_FDB_DYNAMIC_LEARNED, &f->flags))
                atomic_dec(&br->fdb_n_learned);
        fdb_notify(br, f, RTM_DELNEIGH, swdev_notify);
-       call_rcu(&f->rcu, fdb_rcu_free);
+       kfree_rcu(f, rcu);
 }
 
 /* Delete a local entry if no other port had the same address.