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Date: Fri, 21 Oct 2011 15:21:12 +0400
From: Glauber Costa <glommer@parallels.com>
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To: Cyrill Gorcunov <gorcunov@gmail.com>
CC: Tejun Heo <tj@kernel.org>, <linux-kernel@vger.kernel.org>,
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        Pavel Emelyanov <xemul@parallels.com>,
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        Alexey Dobriyan <adobriyan@gmail.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [patch 5/5] elf: Add support for loading ET_CKPT files
References: <20111014110416.552685686@openvz.org> <20111014110511.670174429@openvz.org> <20111014171033.GC4294@google.com> <4EA15224.10102@parallels.com> <20111021112031.GO14464@moon>
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On 10/21/2011 03:20 PM, Cyrill Gorcunov wrote:
> On Fri, Oct 21, 2011 at 03:06:12PM +0400, Glauber Costa wrote:
> ...
>> exec() is a fundamental interface to the kernel, and the change
>> proposed here is too disruptive. Not only that, it is rather
>> unannounced: since not always one knows kind of fmt file is being
>> exec'd, it gets hard to infer which behavior to expect.
>>
>
> This missed snipped in changelog indeed my very fault, sorry for that.
>
>> I am wondering, though: if exec is a problem, but the binary handler
>> is not, maybe we can exec a process using this handler, and then
>> have the handler itself to create the thread hierarchy. This way we
>> avoid changing exec() behavior at all, yet achieving the same
>> results.
>>
>> What do you think?
>>
>>
>
> Glauber, could you please elaborate, you mean to call for forks inside
> elf-chkpt handler, right? Or you mean something else?

not fork(), clone().