From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933265AbWFZXGA (ORCPT ); Mon, 26 Jun 2006 19:06:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933272AbWFZXFO (ORCPT ); Mon, 26 Jun 2006 19:05:14 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:24759 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933289AbWFZWjw (ORCPT ); Mon, 26 Jun 2006 18:39:52 -0400 From: Nigel Cunningham Subject: [Suspend2][ 14/35] [Suspend2] Allocate filewriter header storage Date: Tue, 27 Jun 2006 08:39:50 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626223949.4685.70912.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 Having already allocated storage, set aside a number of pages at the start of the image for the header and record where pageset2 will start. Signed-off-by: Nigel Cunningham kernel/power/suspend_file.c | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/kernel/power/suspend_file.c b/kernel/power/suspend_file.c index 257acca..6b04eb5 100644 --- a/kernel/power/suspend_file.c +++ b/kernel/power/suspend_file.c @@ -427,3 +427,24 @@ static int filewriter_release_storage(vo return 0; } +static int filewriter_allocate_header_space(int space_requested) +{ + int i; + + if (!block_chain.first) + return 0; + + suspend_extent_state_goto_start(&suspend_writer_posn); + suspend_bio_ops.forward_one_page(); /* To first page */ + + for (i = 0; i < space_requested; i++) + if (suspend_bio_ops.forward_one_page()) + return -ENOSPC; + + /* The end of header pages will be the start of pageset 2 */ + suspend_extent_state_save(&suspend_writer_posn, + &suspend_writer_posn_save[2]); + header_pages = space_requested; + return 0; +} + -- Nigel Cunningham nigel at suspend2 dot net