Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758972AbXE3VtH (ORCPT ); Wed, 30 May 2007 17:49:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760685AbXE3Vs0 (ORCPT ); Wed, 30 May 2007 17:48:26 -0400 Received: from x35.xmailserver.org ([64.71.152.41]:2037 "EHLO x35.xmailserver.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760674AbXE3VsY (ORCPT ); Wed, 30 May 2007 17:48:24 -0400 X-AuthUser: davidel@xmailserver.org Date: Wed, 30 May 2007 14:48:22 -0700 (PDT) From: Davide Libenzi X-X-Sender: davide@alien.or.mcafeemobile.com To: Linus Torvalds cc: Ulrich Drepper , Ingo Molnar , Jeff Garzik , Zach Brown , Linux Kernel Mailing List , Arjan van de Ven , Christoph Hellwig , Andrew Morton , Alan Cox , Evgeniy Polyakov , "David S. Miller" , Suparna Bhattacharya , Jens Axboe , Thomas Gleixner Subject: Re: Syslets, Threadlets, generic AIO support, v6 In-Reply-To: Message-ID: References: <20070529212718.GH7875@mami.zabbo.net> <465CA654.5000505@garzik.org> <20070530072055.GA3077@elte.hu> <465D286E.2080807@redhat.com> <20070530084252.GA15708@elte.hu> <465DE992.6070803@redhat.com> X-GPG-FINGRPRINT: CFAE 5BEE FD36 F65E E640 56FE 0974 BF23 270F 474E X-GPG-PUBLIC_KEY: http://www.xmailserver.org/davidel.asc MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1038 Lines: 28 On Wed, 30 May 2007, Linus Torvalds wrote: > > And then the semantics: do these descriptors should show up in > > /proc/self/fd? Are there separate directories for each namespace? Do > > they count against the rlimit? > > Oh, absolutely. The'd be real fd's in every way. People could use them > 100% equivalently (and concurrently) with the traditional ones. The whole, > and the _only_ point, would be that it breaks the legacy guarantees of a > dense fd space. > > Most apps don't actually *need* that dense fd space in any case. But by > defaulting to it, we wouldn't break those (few) apps that actually depend > on it. I agree. What would be a good interface to allocate fds in such area? We don't want to replicate syscalls, so maybe a special new dup function? - Davide - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/