From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750909AbWFZQzG (ORCPT ); Mon, 26 Jun 2006 12:55:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750929AbWFZQyo (ORCPT ); Mon, 26 Jun 2006 12:54:44 -0400 Received: from cust9421.vic01.dataco.com.au ([203.171.70.205]:49798 "EHLO nigel.suspend2.net") by vger.kernel.org with ESMTP id S1750909AbWFZQyH (ORCPT ); Mon, 26 Jun 2006 12:54:07 -0400 From: Nigel Cunningham Subject: [Suspend2][ 2/9] [Suspend2] Extent allocation routines. Date: Tue, 27 Jun 2006 02:54:11 +1000 To: linux-kernel@vger.kernel.org Message-Id: <20060626165410.11065.34890.stgit@nigel.suspend2.net> In-Reply-To: <20060626165404.11065.91833.stgit@nigel.suspend2.net> References: <20060626165404.11065.91833.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 Add routines to get and put extents. Signed-off-by: Nigel Cunningham kernel/power/extent.c | 30 ++++++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-) diff --git a/kernel/power/extent.c b/kernel/power/extent.c index 4027bb1..2fb6a23 100644 --- a/kernel/power/extent.c +++ b/kernel/power/extent.c @@ -17,3 +17,33 @@ int suspend_extents_allocated = 0; +/* suspend_get_extent + * + * Returns a free extent. May fail, returning NULL instead. + */ +static struct extent *suspend_get_extent(void) +{ + struct extent *result; + + if (!(result = kmalloc(sizeof(struct extent), GFP_ATOMIC))) + return NULL; + + suspend_extents_allocated++; + result->minimum = result->maximum = 0; + result->next = NULL; + + return result; +} + +/* suspend_put_extent. + * + * Frees an extent. Assumes unlinking is done by the caller. + */ +void suspend_put_extent(struct extent *extent) +{ + BUG_ON(!extent); + + kfree(extent); + suspend_extents_allocated--; +} + -- Nigel Cunningham nigel at suspend2 dot net