From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f178.google.com (mail-pd0-f178.google.com [209.85.192.178]) by kanga.kvack.org (Postfix) with ESMTP id 143536B003B for ; Fri, 18 Jul 2014 02:52:45 -0400 (EDT) Received: by mail-pd0-f178.google.com with SMTP id w10so4499795pde.37 for ; Thu, 17 Jul 2014 23:52:44 -0700 (PDT) Received: from lgeamrelo04.lge.com (lgeamrelo04.lge.com. [156.147.1.127]) by mx.google.com with ESMTP id ie10si4833688pad.64.2014.07.17.23.52.42 for ; Thu, 17 Jul 2014 23:52:44 -0700 (PDT) From: Minchan Kim Subject: [PATCH v13 3/8] sparc: add pmd_[dirty|mkclean] for THP Date: Fri, 18 Jul 2014 15:53:01 +0900 Message-Id: <1405666386-15095-4-git-send-email-minchan@kernel.org> In-Reply-To: <1405666386-15095-1-git-send-email-minchan@kernel.org> References: <1405666386-15095-1-git-send-email-minchan@kernel.org> Sender: owner-linux-mm@kvack.org List-ID: 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 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..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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org