On Sun, Oct 13, 2024 at 10:16:47PM +0200, Julia Lawall wrote:

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.

Applied and squashed into single patch for netfilter these patches:

[17/17] netfilter: xt_hashlimit: replace call_rcu by kfree_rcu for simple kmem_cache_free callback
[16/17] netfilter: expect: replace call_rcu by kfree_rcu for simple kmem_cache_free callback
[15/17] netfilter: nf_conncount: replace call_rcu by kfree_rcu for simple kmem_cache_free callback

this update is now flying to net-next.

Thanks