From the current thread (in kernel) is there a way to tell the actual thread that fork'd it?
systemd -> proc1 --fork--> thread2
thread2 detaches;
thread2's parent set to systemd;
thread2's tgid set to its pid;
I see that the detached threads have their parent/real_parent set to the parent systemd
Is there a way to reliably tell the parent proc/thread (proc1) from thread2's current (task_info struct)?