Hi Julia & Vlastimil, On Sun, Jun 09, 2024 at 10:27:13AM +0200, Julia Lawall wrote: > Since SLOB was removed, it is not necessary to use call_rcu > when the callback only performs kmem_cache_free. Use > kfree_rcu() directly. Thanks, I applied this to the wireguard tree, and I'll send this out as a fix for 6.10. Let me know if this is unfavorable to you and if you'd like to take this somewhere yourself, in which case I'll give you my ack. Just a question, though, for Vlastimil -- I know that with the SLOB removal, kfree() is now allowed on kmemcache'd objects. Do you plan to do a blanket s/kmem_cache_free/kfree/g at some point, and then remove kmem_cache_free all together? Jason