[Devel] task_session() and task->signal->session

[Sukadev Bhattiprolu]

I am trying to understand the diff between task_session() and
task->signal-session and why we have the two notions of session.
Are we just phasing out one of them ?

In general each process has a single session id. The only exception
being a process that unshares its pid ns. Such process will have
exactly two session ids, one for each pid ns. No ?

Thanks,

Suka
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