Re: [PATCH bpf-next v3 3/7] bpf: support epoll from bpf struct_ops links.

[Kui-Feng Lee <sinquersw@xxxxxxxxx>]

On 5/20/24 18:26, Martin KaFai Lau wrote:
> On 5/9/24 5:29 PM, Kui-Feng Lee wrote:
> > +static __poll_t bpf_struct_ops_map_link_poll(struct file *file,
> > +                         struct poll_table_struct *pts)
> > +{
> > +    struct bpf_struct_ops_link *st_link = file->private_data;
> > +
> > +    poll_wait(file, &st_link->wait_hup, pts);
> > +
> > +    return (st_link->map) ? 0 : EPOLLHUP;
>
> nit. It should need a rcu_access_pointer(st_link->map).
sure