.Fl u
flag, this is the same as specifying the options currently in effect for
the mounted file system.
.It Cm failok
This option is used to prevent certain file systems from dropping into
single-user mode when booting up; it is used internally in
.Xr mount 8
and thus is not a true
.Xr mount 2
flag.
.It Cm force
The same as
.Fl f ;