Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754131Ab3IWMLt (ORCPT ); Mon, 23 Sep 2013 08:11:49 -0400 Received: from mga14.intel.com ([143.182.124.37]:59137 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753967Ab3IWMGN (ORCPT ); Mon, 23 Sep 2013 08:06:13 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.90,962,1371106800"; d="scan'208";a="364269199" From: "Kirill A. Shutemov" To: Andrea Arcangeli , Andrew Morton Cc: Al Viro , Hugh Dickins , Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Andi Kleen , Matthew Wilcox , "Kirill A. Shutemov" , Hillf Danton , Dave Hansen , Ning Qu , Alexander Shishkin , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv6 09/22] block: implement add_bdi_stat() Date: Mon, 23 Sep 2013 15:05:37 +0300 Message-Id: <1379937950-8411-10-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1379937950-8411-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1379937950-8411-1-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: 1268 Lines: 39 We're going to add/remove a number of page cache entries at once. This patch implements add_bdi_stat() which adjusts bdi stats by arbitrary amount. It's required for batched page cache manipulations. Signed-off-by: Kirill A. Shutemov Reviewed-by: Jan Kara --- 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 5f66d519a7..39acfa974b 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -166,6 +166,16 @@ 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) { -- 1.8.4.rc3 -- 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/