Re: [PATCH 2/4] pid: add pidfd_open()

[Christian Brauner <christian@xxxxxxxxxx>]

<snip>

> procfd_open(int procrootfd, int pidfd, unsigned int flags);
> pidfd_open(pid_t pid, int nsfd, unsigned int flags);

That honestly just feels like splitting openat into:
openat_dir()
and
opentat_file()