From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f51.google.com (mail-pa0-f51.google.com [209.85.220.51]) by kanga.kvack.org (Postfix) with ESMTP id 0C1F56B0075 for ; Thu, 26 Feb 2015 06:35:46 -0500 (EST) Received: by padfb1 with SMTP id fb1so13330104pad.8 for ; Thu, 26 Feb 2015 03:35:45 -0800 (PST) Received: from mga11.intel.com (mga11.intel.com. [192.55.52.93]) by mx.google.com with ESMTP id fd2si716171pbc.110.2015.02.26.03.35.36 for ; Thu, 26 Feb 2015 03:35:36 -0800 (PST) From: "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> 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: 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