netdev - Re: [PATCH bpf-next v2 27/35] bpf: eliminate rlimit-based memory accounting infra for bpf maps

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Date:   Mon, 27 Jul 2020 22:47:03 -0700
From:   Song Liu <song@...nel.org>
To:     Roman Gushchin <guro@...com>
Cc:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next v2 27/35] bpf: eliminate rlimit-based memory
 accounting infra for bpf maps

On Mon, Jul 27, 2020 at 12:26 PM Roman Gushchin <guro@...com> wrote:
>
> Remove rlimit-based accounting infrastructure code, which is not used
> anymore.
>
> Signed-off-by: Roman Gushchin <guro@...com>
[...]
>
>  static void bpf_map_put_uref(struct bpf_map *map)
> @@ -541,7 +484,7 @@ static void bpf_map_show_fdinfo(struct seq_file *m, struct file *filp)
>                    "value_size:\t%u\n"
>                    "max_entries:\t%u\n"
>                    "map_flags:\t%#x\n"
> -                  "memlock:\t%llu\n"
> +                  "memlock:\t%llu\n" /* deprecated */

I am not sure whether we can deprecate this one.. How difficult is it
to keep this statistics?

Thanks,
Song