linux-kernel - Re: [PATCH bpf-next v3 01/17] bpf: move bpf_struct_ops

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Message-ID: <CALOAHbBt8Gf0ObNiBRcC2_7rx=Lo2ZytLmqk-J0=9bg1hsOskA@mail.gmail.com>
Date: Tue, 27 Jan 2026 13:50:31 +0800
From: Yafang Shao <laoar.shao@...il.com>
To: Roman Gushchin <roman.gushchin@...ux.dev>
Cc: bpf@...r.kernel.org, Michal Hocko <mhocko@...e.com>, 
	Alexei Starovoitov <ast@...nel.org>, Matt Bobrowski <mattbobrowski@...gle.com>, 
	Shakeel Butt <shakeel.butt@...ux.dev>, JP Kobryn <inwardvessel@...il.com>, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	Suren Baghdasaryan <surenb@...gle.com>, Johannes Weiner <hannes@...xchg.org>, 
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH bpf-next v3 01/17] bpf: move bpf_struct_ops_link into bpf.h

On Tue, Jan 27, 2026 at 10:46 AM Roman Gushchin
<roman.gushchin@...ux.dev> wrote:
>
> Move struct bpf_struct_ops_link's definition into bpf.h,
> where other custom bpf links definitions are.
>
> It's necessary to access its members from outside of generic
> bpf_struct_ops implementation, which will be done by following
> patches in the series.
>
> Signed-off-by: Roman Gushchin <roman.gushchin@...ux.dev>

Feel free to add:

Acked-by: Yafang Shao <laoar.shao@...il.com>

> ---
>  include/linux/bpf.h         | 6 ++++++
>  kernel/bpf/bpf_struct_ops.c | 6 ------
>  2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
> index 4427c6e98331..899dd911dc82 100644
> --- a/include/linux/bpf.h
> +++ b/include/linux/bpf.h
> @@ -1891,6 +1891,12 @@ struct bpf_raw_tp_link {
>         u64 cookie;
>  };
>
> +struct bpf_struct_ops_link {
> +       struct bpf_link link;
> +       struct bpf_map __rcu *map;
> +       wait_queue_head_t wait_hup;
> +};
> +
>  struct bpf_link_primer {
>         struct bpf_link *link;
>         struct file *file;
> diff --git a/kernel/bpf/bpf_struct_ops.c b/kernel/bpf/bpf_struct_ops.c
> index c43346cb3d76..de01cf3025b3 100644
> --- a/kernel/bpf/bpf_struct_ops.c
> +++ b/kernel/bpf/bpf_struct_ops.c
> @@ -55,12 +55,6 @@ struct bpf_struct_ops_map {
>         struct bpf_struct_ops_value kvalue;
>  };
>
> -struct bpf_struct_ops_link {
> -       struct bpf_link link;
> -       struct bpf_map __rcu *map;
> -       wait_queue_head_t wait_hup;
> -};
> -
>  static DEFINE_MUTEX(update_mutex);
>
>  #define VALUE_PREFIX "bpf_struct_ops_"
> --
> 2.52.0
>
>


-- 
Regards
Yafang