From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 4 Jan 2003 06:34:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 4 Jan 2003 06:34:17 -0500 Received: from holomorphy.com ([66.224.33.161]:61645 "EHLO holomorphy") by vger.kernel.org with ESMTP id ; Sat, 4 Jan 2003 06:34:17 -0500 Date: Sat, 4 Jan 2003 03:42:39 -0800 From: William Lee Irwin III To: axboe@suse.de Cc: linux-kernel@vger.kernel.org Subject: blkdev.h paddr overflows Message-ID: <20030104114239.GD10697@holomorphy.com> Mail-Followup-To: William Lee Irwin III , axboe@suse.de, linux-kernel@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.25i Organization: The Domain of Holomorphy Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This patch, originally from Zwane Mwaikambo for my current page clustering tree, corrects overflows with pfn's shifted to paddrs. The portion of the fix casting the pfn's to dma_addr_t, included here, is applicable to mainline. Please apply, Bill ===== include/linux/blkdev.h 1.94 vs edited ===== --- 1.94/include/linux/blkdev.h Tue Nov 19 17:13:41 2002 +++ edited/include/linux/blkdev.h Mon Dec 30 11:09:01 2002 @@ -287,8 +287,8 @@ * BLK_BOUNCE_ANY : don't bounce anything * BLK_BOUNCE_ISA : bounce pages above ISA DMA boundary */ -#define BLK_BOUNCE_HIGH (blk_max_low_pfn << PAGE_SHIFT) -#define BLK_BOUNCE_ANY (blk_max_pfn << PAGE_SHIFT) +#define BLK_BOUNCE_HIGH ((dma_addr_t)blk_max_low_pfn << PAGE_SHIFT) +#define BLK_BOUNCE_ANY ((dma_addr_t)blk_max_pfn << PAGE_SHIFT) #define BLK_BOUNCE_ISA (ISA_DMA_THRESHOLD) extern int init_emergency_isa_pool(void);