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Date: Tue, 13 Jul 2010 17:34:50 -0500
From: "Serge E. Hallyn" <serge@hallyn.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Pavel Emelyanov <xemul@openvz.org>, Oleg Nesterov <oleg@redhat.com>,
        linux-kernel@vger.kernel.org,
        Linux Containers <containers@lists.osdl.org>,
        Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Subject: Re: [PATCH] pidns: Fix wait for zombies to be reaped in
 zap_pid_ns_processes
Message-ID: <20100713223450.GA16889@hallyn.com>
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Quoting Louis Rilling (Louis.Rilling@kerlabs.com):
> Hi Eric,
> 
> On 12/07/10 11:09 -0700, Eric W. Biederman wrote:
> This patch looks like it is working (only a small RCU issue shown below). I
> couldn't try it yet though.
> 
> I must admit that I am using a similar back-off solution in Kerrighed (not to
> solve the issue of proc_flush_task(), but for one of the reasons that you stated
> above: we want to be sure that all tasks of the namespace have been reaped), but
> I considered it too ugly to propose it for Linux ;)
> 
> That said, this is probably the least intrusive solution we have seen yet.

Yeah I haven't had a chance to look at it in detail, but this looks
right.  Thanks, Eric.

-serge