linux-kernel - Re: [PATCH 1/3] ptrace: ptrace_attach: check PF_KTHREAD + exit

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Message-ID: <20090506074101.GD17457@elte.hu>
Date:	Wed, 6 May 2009 09:41:01 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>, chrisw@...s-sol.org,
	roland@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] ptrace: ptrace_attach: check PF_KTHREAD +
	exit_state instead of ->mm


* Christoph Hellwig <hch@...radead.org> wrote:

> On Tue, May 05, 2009 at 04:47:33PM -0700, Andrew Morton wrote:
> > These patches make a mess of utrace-core.patch.  Do we really want to do that?
> 
> Yes.  All these patches from Oleg are preparations for actually 
> doing a utrace merge in a sane way.  I don't really think utrace 
> should be in -mm at this point where active ptrace work is going 
> on.

Yes, as i said it in earlier threads, lacking other in-tree use, 
utrace is only acceptable for upstream if it materially cleans up 
the ptrace code here and now - without any wide #ifdefs like some of 
the earlier patches did.

The latest patches from Oleg clearly go in this direction, which is 
a very promising development!

	Ingo
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