From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f42.google.com (mail-pa0-f42.google.com [209.85.220.42]) by kanga.kvack.org (Postfix) with ESMTP id 117F26B0082 for ; Fri, 6 Feb 2015 09:51:44 -0500 (EST) Received: by mail-pa0-f42.google.com with SMTP id bj1so17808426pad.1 for ; Fri, 06 Feb 2015 06:51:43 -0800 (PST) Received: from mga01.intel.com (mga01.intel.com. [192.55.52.88]) by mx.google.com with ESMTP id fh3si10492894pbb.187.2015.02.06.06.51.19 for ; Fri, 06 Feb 2015 06:51:19 -0800 (PST) From: "Kirill A. Shutemov" Subject: [PATCHv2, RESEND 19/19] mm: do not add nr_pmds into mm_struct if PMD is folded Date: Fri, 6 Feb 2015 16:51:04 +0200 Message-Id: <1423234264-197684-20-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1423234264-197684-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1423234264-197684-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" 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, 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