Re: [PATCH] userfaultfd.2: add EPERM error

[Yang Xu <xuyang2018.jy@xxxxxxxxxxxxxx>]

Hi
Ping.
> Signed-off-by: Yang Xu <xuyang2018.jy@xxxxxxxxxxxxxx>
> ---
>   man2/userfaultfd.2 | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
> index 8d0a66ed9..2b432f043 100644
> --- a/man2/userfaultfd.2
> +++ b/man2/userfaultfd.2
> @@ -440,6 +440,11 @@ reached.
>   .TP
>   .B ENOMEM
>   Insufficient kernel memory was available.
> +.TP
> +.B EPERM
> +Unprivileged user(without SYS_CAP_PTRACE capability) uses this call when
> +set unprivileged_userfaultfd to 0. It was introduced since Linux 5.2.
> +.\" cefdca0a86be517bc390fc4541e3674b8e7803b0
>   .SH VERSIONS
>   The
>   .BR userfaultfd ()