From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762659AbbA3Ons (ORCPT ); Fri, 30 Jan 2015 09:43:48 -0500 Received: from mga01.intel.com ([192.55.52.88]:13707 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762614AbbA3Onl (ORCPT ); Fri, 30 Jan 2015 09:43:41 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,491,1418112000"; d="scan'208";a="670318180" From: "Kirill A. Shutemov" To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Guenter Roeck , "Kirill A. Shutemov" Subject: [PATCH 19/19] mm: do not add nr_pmds into mm_struct if PMD is folded Date: Fri, 30 Jan 2015 16:43:28 +0200 Message-Id: <1422629008-13689-20-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1422629008-13689-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1422629008-13689-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org CONFIG_PGTABLE_LEVELS is now available on every architecture and we can use it to check if we need to add nr_pmds into mm_struct. Signed-off-by: Kirill A. Shutemov --- include/linux/mm_types.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 199a03aab8dc..590630eb59ba 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -364,7 +364,9 @@ struct mm_struct { atomic_t mm_users; /* How many users with user space? */ atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */ atomic_long_t nr_ptes; /* PTE page table pages */ +#if CONFIG_PGTABLE_LEVELS > 2 atomic_long_t nr_pmds; /* PMD page table pages */ +#endif int map_count; /* number of VMAs */ spinlock_t page_table_lock; /* Protects page tables and some counters */ -- 2.1.4