linux-kernel - Re: [PATCH 2/8] kill tracehook_notify

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Date:	Thu, 23 Jun 2011 15:27:54 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	hch@...radead.org
Subject: Re: [PATCH 2/8] kill tracehook_notify_death()

Hey,

On Thu, Jun 23, 2011 at 03:21:26PM +0200, Oleg Nesterov wrote:
> > > This also fixes a minor bug, if the exiting task is the group_leader
> > > and it is traced by its real_parent, tracehook_notify_death() returns
> > > task->exit_signal or SIGCHLD depending on thread_group_empty(), this
> > > looks strange.
> >
> > Maybe we should do the above in a separate patch?
> 
> Do you think this makes sense? OK, I can do this...

Having subtle behavior change mixed with reorganization isn't too
nice, so I think separating is better.

> > thread_group_leader() seems unnecessarily indirect.
> 
> This is what I disagree with. Contrary, I think thread_group_leader() exactly
> explains what do we want to check. (but once again, exec_id logic should be
> cleanuped, not only in this function).

Hmmm... well, this was minor to begin with and thread_group_leader()
matches later patches better, so using thread_group_leader() seems
fine.

Thanks.

-- 
tejun
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