From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030191AbWFZXLw (ORCPT ); Mon, 26 Jun 2006 19:11:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933257AbWFZWiz (ORCPT ); Mon, 26 Jun 2006 18:38:55 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:14519 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933250AbWFZWio (ORCPT ); Mon, 26 Jun 2006 18:38:44 -0400 From: Nigel Cunningham Subject: [Suspend2][ 27/32] [Suspend2] Init and cleanup routines for pageset i/o. Date: Tue, 27 Jun 2006 08:38:43 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626223841.4376.4707.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 Preparation and cleanup routines for doing I/O on a pageset. Signed-off-by: Nigel Cunningham kernel/power/suspend_block_io.c | 37 +++++++++++++++++++++++++++++++++++++ 1 files changed, 37 insertions(+), 0 deletions(-) diff --git a/kernel/power/suspend_block_io.c b/kernel/power/suspend_block_io.c index c095eac..374a861 100644 --- a/kernel/power/suspend_block_io.c +++ b/kernel/power/suspend_block_io.c @@ -919,3 +919,40 @@ wait: return 0; } +static int suspend_rw_init(int rw, int stream_number) +{ + suspend_extent_state_restore(&suspend_writer_posn, + &suspend_writer_posn_save[stream_number]); + current_stream = stream_number; + + BUG_ON(!suspend_writer_posn.current_extent); + + suspend_reset_io_stats(); + + readahead_index = readahead_submit_index = -1; + + return 0; +} + +static int suspend_rw_cleanup(int rw) +{ + if (rw == WRITE && current_stream == 2) + suspend_extent_state_save(&suspend_writer_posn, + &suspend_writer_posn_save[1]); + + suspend_finish_all_io(); + + if (rw == READ) { + while (readahead_index != readahead_submit_index) { + suspend_cleanup_readahead(readahead_index); + readahead_index++; + if (readahead_index == MAX_OUTSTANDING_IO) + readahead_index = 0; + } + } + + suspend_check_io_stats(); + + return 0; +} + -- Nigel Cunningham nigel at suspend2 dot net