Re: ptrace: selinux_bprm_committed_creds: simplify__wake_up_parent() code and s/parent/real_parent/

[Roland McGrath]

> Afaics, with this patch the only user of ->parent outside of ptrace.c & co
> is arch/ia64/kernel/mca.c:format_mca_init_stack(). Hopefully ->parent will
> die soon.

Woo!  Nice work.  That oddball ia64 case is obviously trivial, it just
wants to avoid uninitialized stuff in its task_struct for a
not-really-a-process.  With your fixes, it seems certain that ->parent
should never be examined in those tasks.  Even so, the extra initialization
doesn't hurt.  You could clean it up today with:
	tracehook_finish_clone(p, 0, 0);
at the end (in place of touching ->parent).  
That will dtrt both now and later.


Thanks,
Roland
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