Re: [PATCH 1/9] exec_path 1/9: introduce ->exec_path and switch/proc/*/exe

[Linus Torvalds]

On Fri, 5 Jun 2009, Alexey Dobriyan wrote:
> 
> It's borrowed by kernel thread of course, not userspace task.

.. and even if it is, what's the problem? 

That kernel thread has borroed whe VM for a while. It effectively _is_ a 
thread of the process now. So it's technically not even wrong to 
explicitly allow things like /proc/*/exe to see it as such.

But you can hide it by just checking some flag in the thread structure if 
you really want to.

But when creating a regular thread, you should _not_ need to take a 
spinlock and duplicate the executable path!

		Linus
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