From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753678AbdAZL73 (ORCPT ); Thu, 26 Jan 2017 06:59:29 -0500 Received: from mga04.intel.com ([192.55.52.120]:56705 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753588AbdAZL7Z (ORCPT ); Thu, 26 Jan 2017 06:59:25 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,289,1477983600"; d="scan'208";a="813549961" From: "Kirill A. Shutemov" To: "Theodore Ts'o" , Andreas Dilger , Jan Kara , Andrew Morton Cc: Alexander Viro , Hugh Dickins , Andrea Arcangeli , Dave Hansen , Vlastimil Babka , Matthew Wilcox , Ross Zwisler , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv6 14/37] thp: introduce hpage_size() and hpage_mask() Date: Thu, 26 Jan 2017 14:57:56 +0300 Message-Id: <20170126115819.58875-15-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170126115819.58875-1-kirill.shutemov@linux.intel.com> References: <20170126115819.58875-1-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce new helpers which return size/mask of the page: HPAGE_PMD_SIZE/HPAGE_PMD_MASK if the page is PageTransHuge() and PAGE_SIZE/PAGE_MASK otherwise. Signed-off-by: Kirill A. Shutemov --- include/linux/huge_mm.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 97e478d6b690..e5c9c26d2439 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -142,6 +142,20 @@ static inline int hpage_nr_pages(struct page *page) return 1; } +static inline int hpage_size(struct page *page) +{ + if (unlikely(PageTransHuge(page))) + return HPAGE_PMD_SIZE; + return PAGE_SIZE; +} + +static inline unsigned long hpage_mask(struct page *page) +{ + if (unlikely(PageTransHuge(page))) + return HPAGE_PMD_MASK; + return PAGE_MASK; +} + extern int do_huge_pmd_numa_page(struct vm_fault *vmf, pmd_t orig_pmd); extern struct page *huge_zero_page; @@ -167,6 +181,8 @@ void mm_put_huge_zero_page(struct mm_struct *mm); #define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; }) #define hpage_nr_pages(x) 1 +#define hpage_size(x) PAGE_SIZE +#define hpage_mask(x) PAGE_MASK #define transparent_hugepage_enabled(__vma) 0 -- 2.11.0