On Fri, Oct 16, 2026 at 10:59 AM Qiliang Yuan <[email protected]> wrote:
> - map->free_after_mult_rcu_gp = > st_ops_desc->st_ops->free_after_mult_rcu_gp; > + /* > + * A prog dissociated in map_free_pre_rcu() may still run the struct_ops > + * from a bpf_wq callback or a sleepable prog, under RCU tasks trace. > + */ > + map->free_after_mult_rcu_gp = true; > map->free_after_rcu_gp = true; In v3 thread you asked whether to leave it to each struct_ops. No. The owner of struct_ops cannot know whether a non-sleepable prog starts bpf_wq. bpf_map_put() checks free_after_mult_rcu_gp first, so free_after_rcu_gp = true is dead now. Drop it. st_ops->free_after_mult_rcu_gp only picks the gp for cgroup prog array after this patch. Update its comment in struct bpf_struct_ops. pw-bot: cr
