From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933272AbWFZXKm (ORCPT ); Mon, 26 Jun 2006 19:10:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933247AbWFZWjB (ORCPT ); Mon, 26 Jun 2006 18:39:01 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:928 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S933226AbWFZWii (ORCPT ); Mon, 26 Jun 2006 18:38:38 -0400 From: Nigel Cunningham Subject: [Suspend2][ 25/32] [Suspend2] Do io on a page in the image proper. Date: Tue, 27 Jun 2006 08:38:36 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626223834.4376.97629.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 Advance one page and perform the requested i/o. Signed-off-by: Nigel Cunningham kernel/power/suspend_block_io.c | 35 +++++++++++++++++++++++++++++++++++ 1 files changed, 35 insertions(+), 0 deletions(-) diff --git a/kernel/power/suspend_block_io.c b/kernel/power/suspend_block_io.c index ffc2e16..c746f9f 100644 --- a/kernel/power/suspend_block_io.c +++ b/kernel/power/suspend_block_io.c @@ -821,3 +821,38 @@ static void set_extra_page_forward(void) extra_page_forward = 1; } +static int suspend_rw_page(int rw, struct page *page, + int readahead_index, int sync, int debug) +{ + int i, current_chain; + struct submit_params submit_params; + + if (test_action_state(SUSPEND_TEST_FILTER_SPEED)) + return 0; + + submit_params.readahead_index = readahead_index; + submit_params.page = page; + + if (forward_one_page()) { + printk("Failed to advance a page in the extent data.\n"); + return -ENODATA; + } + + current_chain = suspend_writer_posn.current_chain; + submit_params.dev = suspend_devinfo[current_chain].bdev; + submit_params.block[0] = suspend_writer_posn.current_offset << + suspend_devinfo[current_chain].bmap_shift; + + if (debug) + printk("%s: %lx:%lx.\n", rw ? "Write" : "Read", + (long) submit_params.dev->bd_dev, + (long) submit_params.block[0]); + + i = suspend_do_io(rw, &submit_params, sync); + + if (i) + return -EIO; + + return 0; +} + -- Nigel Cunningham nigel at suspend2 dot net