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Date: Thu, 23 Sep 2010 15:53:00 +0400
From: Pavel Emelyanov <xemul@parallels.com>
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CC: "Eric W. Biederman" <ebiederm@xmission.com>, linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH 8/8] net: Implement socketat.
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On 09/23/2010 03:40 PM, jamal wrote:
> On Thu, 2010-09-23 at 15:33 +0400, Pavel Emelyanov wrote:
> 
>> This particular usecase is unneeded once you have the "enter" ability.
> 
> Is that cheaper from a syscall count/cost?

Why does it matter? You told, that the usage scenario was to
add routes to container. If I do 2 syscalls instead of 1, is
it THAT worse?

> i.e do I have to enter every time i want to write/read this fd?

No - you enter once, create a socket and do whatever you need
withing the enterned namespace.

> How does poll/select work in that enter scenario?

Just like it used to before the enter.

> cheers,
> jamal
> 
>