Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752472Ab0KYUNT (ORCPT ); Thu, 25 Nov 2010 15:13:19 -0500 Received: from lo.gmane.org ([80.91.229.12]:53750 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752106Ab0KYUNS (ORCPT ); Thu, 25 Nov 2010 15:13:18 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: "Frank A. Kingswood" Subject: atomically swap two files Date: Thu, 25 Nov 2010 20:11:46 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 88-97-16-53.dsl.zen.co.uk User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1.15) Gecko/20101030 Icedove/3.0.10 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 476 Lines: 9 Hi! Is it possible to swap two files in an atomic way, so that after the syscall either the two files have exchanged names or neither has been modified? I suspect that btrfs could do it, but I'm wondering about ext3/4. Frank -- 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/