From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756688Ab1GGOae (ORCPT ); Thu, 7 Jul 2011 10:30:34 -0400 Received: from mail-iy0-f174.google.com ([209.85.210.174]:61117 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756666Ab1GGOaa (ORCPT ); Thu, 7 Jul 2011 10:30:30 -0400 Date: Thu, 7 Jul 2011 09:30:19 -0500 From: Heechul Yun To: Russell King - ARM Linux , Catalin Marinas Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, saeed.bishara@gmail.com Subject: [PATCHv2] remove unnecessary cache flush on v6 copypage Message-ID: <20110707143019.GA16819@heechul-desktop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ARM: mm: remove unnecessary cache flush on v6 copypage Originally introduced to maintain coherency between icache and dcache in v6 nonaliasing mode. This is now handled by __sync_icache_dcache since c0177800, therefore unneceary in this function. Signed-off-by: Heechul Yun Acked-by: Catalin Marinas -- arch/arm/mm/copypage-v6.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c index bdba6c6..63cca00 100644 --- a/arch/arm/mm/copypage-v6.c +++ b/arch/arm/mm/copypage-v6.c @@ -41,7 +41,6 @@ static void v6_copy_user_highpage_nonaliasing(struct page *to, kfrom = kmap_atomic(from, KM_USER0); kto = kmap_atomic(to, KM_USER1); copy_page(kto, kfrom); - __cpuc_flush_dcache_area(kto, PAGE_SIZE); kunmap_atomic(kto, KM_USER1); kunmap_atomic(kfrom, KM_USER0); }