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Subject: Re: [PATCH 8/8] net: Implement socketat.
From: jamal <hadi@cyberus.ca>
Reply-To: hadi@cyberus.ca
To: Pavel Emelyanov <xemul@parallels.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>, linux-kernel@vger.kernel.org,
        Linux Containers <containers@lists.osdl.org>, netdev@vger.kernel.org,
        netfilter-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        Daniel Lezcano <daniel.lezcano@free.fr>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Michael Kerrisk <mtk.manpages@gmail.com>,
        Ulrich Drepper <drepper@gmail.com>, Al Viro <viro@ZenIV.linux.org.uk>,
        David Miller <davem@davemloft.net>,
        "Serge E. Hallyn" <serge@hallyn.com>,
        Pavel Emelyanov <xemul@openvz.org>,
        Ben Greear <greearb@candelatech.com>,
        Matt Helsley <matthltc@us.ibm.com>, Jonathan Corbet <corbet@lwn.net>,
        Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>,
        Jan Engelhardt <jengelh@medozas.de>, Patrick McHardy <kaber@trash.net>
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Date: Thu, 23 Sep 2010 07:40:55 -0400
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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?
i.e do I have to enter every time i want to write/read this fd?
How does poll/select work in that enter scenario?

cheers,
jamal