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Date: Fri, 21 Apr 2006 02:37:55 +0200
From: Patrick McHardy <kaber@trash.net>
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To: mikado4vn@gmail.com
CC: Jan Engelhardt <jengelh@linux01.gwdg.de>,
       Linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: Which process is associated with process ID 0 (swapper)
References: <4447A19E.9000008@gmail.com> <Pine.LNX.4.61.0604201118200.5749@chaos.analogic.com> <4447B110.4080700@gmail.com> <Pine.LNX.4.61.0604210007140.28841@yvahk01.tjqt.qr> <44481ACE.9040104@gmail.com>
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Mikado wrote:
> Jan Engelhardt wrote:
> 
>>>Is your code doing it like ipt_owner does?
> 
> 
> It seems that ipt_owner does _not_ support PID match anymore:

Yes, it was removed for two reasons:

- it used tasklist_lock from bh-context, resulting in deadlocks
- there is no 1:1 mapping between sockets (or packets) and
  processes. If you use corking even a single packet can be
  created in cooperation by multiple processes.