netdev - Re: [PATCH v3 bpf-next 2/4] bpf: allow bpf_d_path in sleepable bpf

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Date:   Fri, 8 Jan 2021 22:54:57 +0100
From:   KP Singh <kpsingh@...nel.org>
To:     Song Liu <songliubraving@...com>
Cc:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        linux-mm@...ck.org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Kernel Team <kernel-team@...com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Yonghong Song <yhs@...com>
Subject: Re: [PATCH v3 bpf-next 2/4] bpf: allow bpf_d_path in sleepable
 bpf_iter program

On Thu, Jan 7, 2021 at 5:23 AM Song Liu <songliubraving@...com> wrote:
>
> task_file and task_vma iter programs have access to file->f_path. Enable
> bpf_d_path to print paths of these file.
>
> bpf_iter programs are generally called in sleepable context. However, it
> is still necessary to diffientiate sleepable and non-sleepable bpf_iter
> programs: sleepable programs have access to bpf_d_path; non-sleepable
> programs have access to bpf_spin_lock.
>
> Acked-by: Yonghong Song <yhs@...com>
> Signed-off-by: Song Liu <songliubraving@...com>

Acked-by: KP Singh <kpsingh@...nel.org>