From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964780AbWFZXCO (ORCPT ); Mon, 26 Jun 2006 19:02:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933290AbWFZWj4 (ORCPT ); Mon, 26 Jun 2006 18:39:56 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:19127 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933248AbWFZWjO (ORCPT ); Mon, 26 Jun 2006 18:39:14 -0400 From: Nigel Cunningham Subject: [Suspend2][ 03/35] [Suspend2] Get filewriter storage available. Date: Tue, 27 Jun 2006 08:39:13 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626223912.4685.37028.stgit@nigel.suspend2.net> In-Reply-To: <20060626223902.4685.52543.stgit@nigel.suspend2.net> References: <20060626223902.4685.52543.stgit@nigel.suspend2.net> Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit User-Agent: StGIT/0.9 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Return the amount of storage available to the filewriter, in pages. Signed-off-by: Nigel Cunningham kernel/power/suspend_file.c | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-) diff --git a/kernel/power/suspend_file.c b/kernel/power/suspend_file.c index 36db6b8..caa86bc 100644 --- a/kernel/power/suspend_file.c +++ b/kernel/power/suspend_file.c @@ -105,3 +105,34 @@ static void set_devinfo(struct block_dev } } +static int filewriter_storage_available(void) +{ + int result = 0; + struct block_device *bdev=filewriter_target_bdev; + + if (!target_inode) + return 0; + + switch (target_inode->i_mode & S_IFMT) { + case S_IFSOCK: + case S_IFCHR: + case S_IFIFO: /* Socket, Char, Fifo */ + return -1; + case S_IFREG: /* Regular file: current size - holes + free + space on part */ + result = target_storage_available; + break; + case S_IFBLK: /* Block device */ + if (!bdev->bd_disk) { + printk("bdev->bd_disk null.\n"); + return 0; + } + + result = (bdev->bd_part ? + bdev->bd_part->nr_sects : + bdev->bd_disk->capacity) >> (PAGE_SHIFT - 9); + } + + return result; +} + -- Nigel Cunningham nigel at suspend2 dot net