Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261214AbUDCBEa (ORCPT ); Fri, 2 Apr 2004 20:04:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261498AbUDCBE3 (ORCPT ); Fri, 2 Apr 2004 20:04:29 -0500 Received: from mail.shareable.org ([81.29.64.88]:25238 "EHLO mail.shareable.org") by vger.kernel.org with ESMTP id S261214AbUDCBE3 (ORCPT ); Fri, 2 Apr 2004 20:04:29 -0500 Date: Sat, 3 Apr 2004 02:04:25 +0100 From: Jamie Lokier To: Pavel Machek Cc: =?iso-8859-1?Q?J=F6rn?= Engel , mj@ucw.cz, jack@ucw.cz, "Patrick J. LoPresti" , linux-kernel@vger.kernel.org Subject: Re: [PATCH] cowlinks v2 Message-ID: <20040403010425.GJ653@mail.shareable.org> References: <20040320152328.GA8089@wohnheim.fh-wedel.de> <20040329171245.GB1478@elf.ucw.cz> <20040329231635.GA374@elf.ucw.cz> <20040402165440.GB24861@wohnheim.fh-wedel.de> <20040402180128.GA363@elf.ucw.cz> <20040402181707.GA28112@wohnheim.fh-wedel.de> <20040402182357.GB410@elf.ucw.cz> <20040402200921.GC653@mail.shareable.org> <20040402213933.GB246@elf.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040402213933.GB246@elf.ucw.cz> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 471 Lines: 14 Here's a tricky situation: 1. A file is cowlinked. Then each cowlink is mmap()'d, one per process. 2. At this point both mappings share the same pages in RAM. 3. Then one of the cowlinks is written to... -- Jamie - 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/