From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933243AbWFZWiY (ORCPT ); Mon, 26 Jun 2006 18:38:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933234AbWFZWiX (ORCPT ); Mon, 26 Jun 2006 18:38:23 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:59807 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933214AbWFZWhv (ORCPT ); Mon, 26 Jun 2006 18:37:51 -0400 From: Nigel Cunningham Subject: [Suspend2][ 12/32] [Suspend2] Prepare & cleanup readahead pages. Date: Tue, 27 Jun 2006 08:37:49 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626223747.4376.10216.stgit@nigel.suspend2.net> In-Reply-To: <20060626223706.4376.96042.stgit@nigel.suspend2.net> References: <20060626223706.4376.96042.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 Allocate and cleanup pages used for readahead. Signed-off-by: Nigel Cunningham kernel/power/suspend_block_io.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) diff --git a/kernel/power/suspend_block_io.c b/kernel/power/suspend_block_io.c index f14939e..a1fcacb 100644 --- a/kernel/power/suspend_block_io.c +++ b/kernel/power/suspend_block_io.c @@ -414,3 +414,25 @@ static int suspend_readahead_ready(int r return test_bit(bit, &suspend_readahead_flags[index]); } +/* suspend_readahead_prepare + * Set up for doing readahead on an image */ +static int suspend_prepare_readahead(int index) +{ + unsigned long new_page = get_zeroed_page(GFP_ATOMIC); + + if(!new_page) + return -ENOMEM; + + suspend_readahead_pages[index] = virt_to_page(new_page); + return 0; +} + +/* suspend_readahead_cleanup + * Clean up structures used for readahead */ +static void suspend_cleanup_readahead(int page) +{ + __free_page(suspend_readahead_pages[page]); + suspend_readahead_pages[page] = 0; + return; +} + -- Nigel Cunningham nigel at suspend2 dot net