From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751421AbWBLTtd (ORCPT ); Sun, 12 Feb 2006 14:49:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751432AbWBLTtc (ORCPT ); Sun, 12 Feb 2006 14:49:32 -0500 Received: from gold.veritas.com ([143.127.12.110]:54354 "EHLO gold.veritas.com") by vger.kernel.org with ESMTP id S1751421AbWBLTtc (ORCPT ); Sun, 12 Feb 2006 14:49:32 -0500 Date: Sun, 12 Feb 2006 19:50:02 +0000 (GMT) From: Hugh Dickins X-X-Sender: hugh@goblin.wat.veritas.com To: Andrew Morton cc: David Gibson , linux-kernel@vger.kernel.org Subject: [PATCH 3/3] compound page: no access_process_vm check In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-OriginalArrivalTime: 12 Feb 2006 19:49:31.0786 (UTC) FILETIME=[712906A0:01C6300D] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org The PageCompound check before access_process_vm's set_page_dirty_lock is no longer necessary, so remove it. But leave the PageCompound checks in bio_set_pages_dirty, dio_bio_complete and nfs_free_user_pages: at least some of those were introduced as a little optimization on hugetlb pages. Signed-off-by: Hugh Dickins --- kernel/ptrace.c | 3 +-- 1 files changed, 1 insertion(+), 2 deletions(-) --- 2.6.16-rc2-git11/kernel/ptrace.c 2006-02-03 09:32:51.000000000 +0000 +++ 2.6.16-rc2-git11+/kernel/ptrace.c 2006-02-10 20:07:05.000000000 +0000 @@ -242,8 +242,7 @@ int access_process_vm(struct task_struct if (write) { copy_to_user_page(vma, page, addr, maddr + offset, buf, bytes); - if (!PageCompound(page)) - set_page_dirty_lock(page); + set_page_dirty_lock(page); } else { copy_from_user_page(vma, page, addr, buf, maddr + offset, bytes);