From patchwork Tue Jul 8 06:03:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Minchan Kim X-Patchwork-Id: 367802 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 557C314007D for ; Tue, 8 Jul 2014 16:06:57 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753232AbaGHGD6 (ORCPT ); Tue, 8 Jul 2014 02:03:58 -0400 Received: from lgeamrelo01.lge.com ([156.147.1.125]:36742 "EHLO lgeamrelo01.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753166AbaGHGDz (ORCPT ); Tue, 8 Jul 2014 02:03:55 -0400 Received: from unknown (HELO localhost.localdomain) (10.177.220.169) by 156.147.1.125 with ESMTP; 8 Jul 2014 15:03:44 +0900 X-Original-SENDERIP: 10.177.220.169 X-Original-MAILFROM: minchan@kernel.org From: Minchan Kim To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michael Kerrisk , Linux API , Hugh Dickins , Johannes Weiner , Rik van Riel , KOSAKI Motohiro , Mel Gorman , Jason Evans , Zhang Yanfei , "Kirill A. Shutemov" , Minchan Kim , "David S. Miller" , sparclinux@vger.kernel.org Subject: [PATCH v11 3/7] sparc: add pmd_[dirty|mkclean] for THP Date: Tue, 8 Jul 2014 15:03:40 +0900 Message-Id: <1404799424-1120-4-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1404799424-1120-1-git-send-email-minchan@kernel.org> References: <1404799424-1120-1-git-send-email-minchan@kernel.org> Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page. This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE support. Cc: "David S. Miller" Cc: sparclinux@vger.kernel.org Signed-off-by: Minchan Kim --- arch/sparc/include/asm/pgtable_64.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 3770bf5c6e1b..0a3e5fdfead2 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -666,6 +666,13 @@ static inline unsigned long pmd_young(pmd_t pmd) return pte_young(pte); } +static inline int pmd_dirty(pmd_t pmd) +{ + pte_t pte = __pte(pmd_val(pmd)); + + return pte_dirty(pte); +} + static inline unsigned long pmd_write(pmd_t pmd) { pte_t pte = __pte(pmd_val(pmd)); @@ -723,6 +730,15 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd) return __pmd(pte_val(pte)); } +static inline pmd_mkclean(pmd_t pmd) +{ + pte_t pte = __pte(pmd_val(pmd)); + + pte = pte_mkclean(pte); + + return __pmd(pte_val(pte)); +} + static inline pmd_t pmd_mkyoung(pmd_t pmd) { pte_t pte = __pte(pmd_val(pmd));