On 12/18/19 7:13 AM, Yang Xu wrote: > 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 () Hello Yang Xu, Thanks. Patch applied (with some tweaks). Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/