Quoting Oren Laadan (orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org):

Checkpointing of multiple processes works by recording the tasks tree
structure below a given task (usually this task is the container init).

For a given task, do a DFS scan of the tasks tree and collect them
into an array (keeping a reference to each task). Using DFS simplifies
the recreation of tasks either in user space or kernel space. For each
task collected, test if it can be checkpointed, and save its pid, tgid,
and ppid.

The actual work is divided into two passes: a first scan counts the
tasks, then memory is allocated and a second scan fills the array.

The logic is suitable for creation of processes during restart either
in userspace or by the kernel.

Currently we ignore threads and zombies, as well as session ids.

Signed-off-by: Oren Laadan <redacted>

Looks good.

Acked-by: Serge Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>

thanks,
-serge
--
To unsubscribe from this list: send the line "unsubscribe linux-api" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html