inetpeer: 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>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://patch.msgid.link/20241013201704.49576-4-Julia.Lawall@inria.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 5bd7599634517a83b80cb4e46805160473cfa7db..5ab56f4cb529769d4edb07261c08d61ff96f0c0f 100644 (file)
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -128,11 +128,6 @@ static struct inet_peer *lookup(const struct inetpeer_addr *daddr,
        return NULL;
 }
 
-static void inetpeer_free_rcu(struct rcu_head *head)
-{
-       kmem_cache_free(peer_cachep, container_of(head, struct inet_peer, rcu));
-}
-
 /* perform garbage collect on all items stacked during a lookup */
 static void inet_peer_gc(struct inet_peer_base *base,
                         struct inet_peer *gc_stack[],
@@ -168,7 +163,7 @@ static void inet_peer_gc(struct inet_peer_base *base,
                if (p) {
                        rb_erase(&p->rb_node, &base->rb_root);
                        base->total--;
-                       call_rcu(&p->rcu, inetpeer_free_rcu);
+                       kfree_rcu(p, rcu);
                }
        }
 }
@@ -242,7 +237,7 @@ void inet_putpeer(struct inet_peer *p)
        WRITE_ONCE(p->dtime, (__u32)jiffies);
 
        if (refcount_dec_and_test(&p->refcnt))
-               call_rcu(&p->rcu, inetpeer_free_rcu);
+               kfree_rcu(p, rcu);
 }
 EXPORT_SYMBOL_GPL(inet_putpeer);