Quoting Oren Laadan (orenl@librato.com):

From: Sukadev Bhattiprolu <redacted>

...

+struct target_pid_set {
+	int num_pids;
+	pid_t *target_pids;
+};

Oren, I thought you had decided to add an extended flags field
here, to support additional CLONE_ flags - such as CLONE_TIMENS?

I mention it now because if you're still considering that
long-term, then IMO the syscall should not be called clone_with_pids(),
but clone_extended().  Otherwise, to support new clone flags we'll
either have to use unshare2 (without clone support), or add yet
another clone variant, OR use clone_with_pids() which is a poor name
for something which will likely be used in cases without specifying
pids, but specifying flags not support through any other interface.

-serge

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