Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932605AbbBZLjz (ORCPT ); Thu, 26 Feb 2015 06:39:55 -0500 Received: from mga01.intel.com ([192.55.52.88]:63667 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932394AbbBZLfi (ORCPT ); Thu, 26 Feb 2015 06:35:38 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,652,1418112000"; d="scan'208";a="657498508" From: "Kirill A. Shutemov" To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv3 17/17] mm: do not add nr_pmds into mm_struct if PMD is folded Date: Thu, 26 Feb 2015 13:35:20 +0200 Message-Id: <1424950520-90188-18-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1424950520-90188-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1424950520-90188-1-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 Content-Length: 1195 Lines: 31 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 Tested-by: Guenter Roeck --- 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 -- 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/