Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992569AbWJTHhy (ORCPT ); Fri, 20 Oct 2006 03:37:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992571AbWJTHhx (ORCPT ); Fri, 20 Oct 2006 03:37:53 -0400 Received: from mtagate3.de.ibm.com ([195.212.29.152]:9437 "EHLO mtagate3.de.ibm.com") by vger.kernel.org with ESMTP id S2992569AbWJTHhw (ORCPT ); Fri, 20 Oct 2006 03:37:52 -0400 Message-ID: <45387CCD.9030005@freenet.de> Date: Fri, 20 Oct 2006 09:37:49 +0200 From: Carsten Otte User-Agent: Thunderbird 1.5.0.7 (X11/20060927) MIME-Version: 1.0 To: Nick Piggin CC: Andrew Morton , Cedric Le Goater , "Rafael J. Wysocki" , Gabriel C , linux-kernel@vger.kernel.org Subject: Re: 2.6.19-rc2-mm1 References: <20061016230645.fed53c5b.akpm@osdl.org> <45367210.4040507@googlemail.com> <200610182118.31371.rjw@sisk.pl> <4536818E.3060505@fr.ibm.com> <453683A6.9090106@yahoo.com.au> <45368E0A.1030503@fr.ibm.com> <20061018152346.0486b6bc.akpm@osdl.org> <4537A263.4090601@freenet.de> <4537BF8A.9040004@yahoo.com.au> In-Reply-To: <4537BF8A.9040004@yahoo.com.au> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 676 Lines: 12 Nick Piggin wrote: > I don't believe filemap_xip holds the page lock, so you don't need to do > the atomic copy, and you don't need to do the fault_in_pages_readable. No, we don't hold the page lock. Xip pages are property of the block device driver, are not in the page lru, and by calling get_xip_page we retrieved a reference to that page which remains valid until the file system is unmounted / the block device is closed. - 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/