From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756430Ab3A1JXj (ORCPT ); Mon, 28 Jan 2013 04:23:39 -0500 Received: from mga01.intel.com ([192.55.52.88]:60169 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755931Ab3A1JXe (ORCPT ); Mon, 28 Jan 2013 04:23:34 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,550,1355126400"; d="scan'208";a="282975105" From: "Kirill A. Shutemov" To: Andrea Arcangeli , Andrew Morton , Al Viro Cc: Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Andi Kleen , Matthew Wilcox , "Kirill A. Shutemov" , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCH, RFC 01/16] block: implement add_bdi_stat() Date: Mon, 28 Jan 2013 11:24:13 +0200 Message-Id: <1359365068-10147-2-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1359365068-10147-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1359365068-10147-1-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 From: "Kirill A. Shutemov" It's required for batched stats update. Signed-off-by: Kirill A. Shutemov --- include/linux/backing-dev.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 3504599..b05d961 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -167,6 +167,16 @@ static inline void __dec_bdi_stat(struct backing_dev_info *bdi, __add_bdi_stat(bdi, item, -1); } +static inline void add_bdi_stat(struct backing_dev_info *bdi, + enum bdi_stat_item item, s64 amount) +{ + unsigned long flags; + + local_irq_save(flags); + __add_bdi_stat(bdi, item, amount); + local_irq_restore(flags); +} + static inline void dec_bdi_stat(struct backing_dev_info *bdi, enum bdi_stat_item item) { -- 1.7.10.4