linux-kernel - Re: ptrace: selinux_bprm_committed_creds: simplify __wake_up_parent() code and s/parent/real

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Message-Id: <20090504173840.D08E9FC32F@magilla.sf.frob.com>
Date:	Mon,  4 May 2009 10:38:40 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Stephen Smalley <sds@...ho.nsa.gov>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Howells <dhowells@...hat.com>,
	Eric Paris <eparis@...isplace.org>,
	James Morris <jmorris@...ei.org>, linux-kernel@...r.kernel.org
Subject: Re: ptrace: selinux_bprm_committed_creds: simplify
	__wake_up_parent() code and s/parent/real_parent/

> > > 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.
> >
> > You could clean it up today with:
> > 	tracehook_finish_clone(p, 0, 0);
> 
> Yes... but we still need to initialize real_parent/group_leader. 

tracehook_finish_clone->ptrace_init_task does this.
That is the sole point of the call.

> This code is so special, perhaps it is better to just remove "p->parent =
> " later and do not add "#include tracehook". We will see.

Whatever you want there is fine by me.


Thanks,
Roland
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