From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932598AbaLBQm6 (ORCPT ); Tue, 2 Dec 2014 11:42:58 -0500 Received: from mail-ie0-f173.google.com ([209.85.223.173]:36375 "EHLO mail-ie0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932236AbaLBQm5 (ORCPT ); Tue, 2 Dec 2014 11:42:57 -0500 Message-ID: <1417538574.5303.69.camel@edumazet-glaptop2.roam.corp.google.com> Subject: Re: [PATCH 1/2] fs: introduce sendfd() syscall From: Eric Dumazet To: Alex Dubov Cc: "linux-kernel@vger.kernel.org" , Alex Dubov Date: Tue, 02 Dec 2014 08:42:54 -0800 In-Reply-To: References: <1417494919-4577-1-git-send-email-oakad@yahoo.com> <1417494919-4577-2-git-send-email-oakad@yahoo.com> <1417524607.5303.45.camel@edumazet-glaptop2.roam.corp.google.com> <1417534380.5303.64.camel@edumazet-glaptop2.roam.corp.google.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2014-12-03 at 03:23 +1100, Alex Dubov wrote: > Same as SIGKILL. And yet, our machines are still working fine. > > If process A has sufficient capability to send signals to process B, > then process B is already at its mercy, fds or not fds. Tell me how a 128 threads program can use this new mechanism in a scalable way. One signal per thread ? I guess we'll keep AF_UNIX then, thank you.