Re: [PATCH RFC bpf-next v6 1/6] bpf/helpers: introduce sleepable bpf_timers

On Mon, 2024-04-08 at 19:20 +0200, Benjamin Tissoires wrote:

[...]

That was my initial assumption too, but Alexei told me it was fine. And I think he is correct because kfree_rcu doesn't need the rcu_head to be initialized.

So in the end, we initialize the memory as a work_struct, and when that work kicks in, we reuse that exact same memory as the rcu_head. This is fine because that work will never be reused.

Oh, I get it, thank you for explanation.

Thanks, Eduard