Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264182AbTEaHIZ (ORCPT ); Sat, 31 May 2003 03:08:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264183AbTEaHIZ (ORCPT ); Sat, 31 May 2003 03:08:25 -0400 Received: from bay-bridge.veritas.com ([143.127.3.10]:24823 "EHLO mtvmime03.VERITAS.COM") by vger.kernel.org with ESMTP id S264182AbTEaHIY (ORCPT ); Sat, 31 May 2003 03:08:24 -0400 Date: Sat, 31 May 2003 08:24:00 +0100 (BST) From: Hugh Dickins X-X-Sender: hugh@localhost.localdomain To: Russell King cc: Jun Sun , , Ralf Baechle Subject: Re: Properly implement flush_dcache_page in 2.4? (Or is it possible?) In-Reply-To: <20030531001458.H9419@flint.arm.linux.org.uk> Message-ID: 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 On Sat, 31 May 2003, Russell King wrote: > > I don't see a reason to worry about privately mapped pages on the i_mmap > list since they are private, and therefore shouldn't be updated with > modifications to other mappings, which I'd have thought would include > writes to the file (although I'm not so sure atm.) Be not so sure. vmas on the private i_mmap list can still contain shared pages, which should see writes to the file; but of course their already-COWed private pages won't see subsequent writes to the file. Hugh - 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/