From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946542Ab3BHMnJ (ORCPT ); Fri, 8 Feb 2013 07:43:09 -0500 Received: from chrocht.moloch.sk ([62.176.169.44]:48118 "EHLO mail.moloch.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946412Ab3BHMnI (ORCPT ); Fri, 8 Feb 2013 07:43:08 -0500 Message-ID: <5114F2D8.5020300@250bpm.com> Date: Fri, 08 Feb 2013 13:43:04 +0100 From: Martin Sustrik User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.24) Gecko/20111109 Thunderbird/3.1.16 MIME-Version: 1.0 To: Andrew Morton CC: Alexander Viro , Sha Zhengju , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH 1/1] eventfd: implementation of EFD_MASK flag References: <1360219292-19754-1-git-send-email-sustrik@250bpm.com> <20130207144433.527ef024.akpm@linux-foundation.org> In-Reply-To: <20130207144433.527ef024.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/02/13 23:44, Andrew Morton wrote: > That's a nice changelog but it omitted a critical thing: why do you > think the kernel needs this feature? What's the value and use case for > being able to poll these descriptors? To address the question, I've written down detailed description of the challenges of the network protocol development in user space and how the proposed feature addresses the problems. It's too long to fit into ChangeLog, but it may be worth reading when trying to judge the merit of the patch. It can be found here: http://www.250bpm.com/blog:16 Martin