Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967920AbXFHM6G (ORCPT ); Fri, 8 Jun 2007 08:58:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S937318AbXFHM5w (ORCPT ); Fri, 8 Jun 2007 08:57:52 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:56015 "EHLO the-village.bc.nu" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S938171AbXFHM5v (ORCPT ); Fri, 8 Jun 2007 08:57:51 -0400 Date: Fri, 8 Jun 2007 14:01:50 +0100 From: Alan Cox To: Theodore Tso Cc: Davide Libenzi , Ulrich Drepper , Eric Dumazet , Kyle Moffett , Linux Kernel Mailing List , Linus Torvalds , Andrew Morton , Ingo Molnar Subject: Re: [patch 7/8] fdmap v2 - implement sys_socket2 Message-ID: <20070608140150.6f31672f@the-village.bc.nu> In-Reply-To: <20070608120746.GD12687@thunk.org> References: <466741BD.20106@redhat.com> <20070607110432.73be7960@the-village.bc.nu> <20070607151243.22caab9e.dada1@cosmosbay.com> <466864F8.2050903@cosmosbay.com> <46686810.6030805@redhat.com> <466880A4.3090908@redhat.com> <20070608120746.GD12687@thunk.org> X-Mailer: Claws Mail 2.9.1 (GTK+ 2.10.8; i386-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 771 Lines: 17 > Um, how cheap do you need it? get_random_int() is actually pretty > cheep, since it was designed to be usable by the networking stack for > sequence numbers for TCP packets; and it's not like sys_close() or > sys_open() is a majorly critical path, is it? If the concern is At this point wouldn't it be cheaper to allocate file handles using a different algorithm than firing up the RNG - say like in the POSIX fashion ... It seems every purpose of this fd stuff is now a failure when compared with existing behaviours. - 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/