From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263475AbTHVS4X (ORCPT ); Fri, 22 Aug 2003 14:56:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263547AbTHVS4X (ORCPT ); Fri, 22 Aug 2003 14:56:23 -0400 Received: from nat9.steeleye.com ([65.114.3.137]:32773 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S263475AbTHVS4T (ORCPT ); Fri, 22 Aug 2003 14:56:19 -0400 Subject: Re: [parisc-linux] Re: Problems with kernel mmap (failing tst-mmap-eofsync in glibc on parisc) From: James Bottomley To: "David S. Miller" Cc: Hugh Dickins , willy@debian.org, Linux Kernel , PARISC list , drepper@redhat.com In-Reply-To: <20030822113106.0503a665.davem@redhat.com> References: <20030822110144.5f7b83c5.davem@redhat.com> <20030822113106.0503a665.davem@redhat.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.8 (1.0.8-9) Date: 22 Aug 2003 13:56:06 -0500 Message-Id: <1061578568.2053.313.camel@mulgrave> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2003-08-22 at 13:31, David S. Miller wrote: > On Fri, 22 Aug 2003 19:34:41 +0100 (BST) > Hugh Dickins wrote: > > > And to me. If VM_SHARED is set, then __vma_link_file puts the vma on > > on i_mmap_shared. If VM_SHARED is not set, it puts the vma on i_mmap. > > flush_dcache_page treats i_mmap_shared and i_mmap lists equally. > > But file system page cache writes only call flush_dache_page() > if the page has a non-empty i_mmap_shared list. Hmm, but if it does that then the glibc bug test should show up on sparc because the i_mmap_shared list is empty if we only do MAP_SHARED of read only files. James