Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753664AbaJTKMc (ORCPT ); Mon, 20 Oct 2014 06:12:32 -0400 Received: from lgeamrelo04.lge.com ([156.147.1.127]:64810 "EHLO lgeamrelo04.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753487AbaJTKLt (ORCPT ); Mon, 20 Oct 2014 06:11:49 -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 , Russell King , linux-arm-kernel@lists.infradead.org, Will Deacon , Steve Capper , Catalin Marinas Subject: [PATCH v17 6/7] arm64: add pmd_[dirty|mkclean] for THP Date: Mon, 20 Oct 2014 19:12:03 +0900 Message-Id: <1413799924-17946-7-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. Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Acked-by: Will Deacon Acked-by: Steve Capper Acked-by: Catalin Marinas Signed-off-by: Minchan Kim --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 6d81471183ee..effc859084bc 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -275,10 +275,12 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address, #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #define pmd_young(pmd) pte_young(pmd_pte(pmd)) +#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd))) #define pmd_mksplitting(pmd) pte_pmd(pte_mkspecial(pmd_pte(pmd))) #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) +#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) #define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK)) -- 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/