Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753709AbaJTKMj (ORCPT ); Mon, 20 Oct 2014 06:12:39 -0400 Received: from lgeamrelo04.lge.com ([156.147.1.127]:64753 "EHLO lgeamrelo04.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753404AbaJTKLs (ORCPT ); Mon, 20 Oct 2014 06:11:48 -0400 X-Original-SENDERIP: 10.177.220.156 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@vger.kernel.org, Hugh Dickins , Johannes Weiner , Rik van Riel , KOSAKI Motohiro , Mel Gorman , Jason Evans , zhangyanfei@cn.fujitsu.com, "Kirill A. Shutemov" , Minchan Kim , sparclinux@vger.kernel.org, "David S. Miller" Subject: [PATCH v17 3/7] sparc: add pmd_[dirty|mkclean] for THP Date: Mon, 20 Oct 2014 19:12:00 +0900 Message-Id: <1413799924-17946-4-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1413799924-17946-1-git-send-email-minchan@kernel.org> References: <1413799924-17946-1-git-send-email-minchan@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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. Acked-by: 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..b80a309d7e00 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_t 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)); -- 2.0.0 -- 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/