From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934154AbXC1Xq6 (ORCPT ); Wed, 28 Mar 2007 19:46:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934065AbXC1Xq6 (ORCPT ); Wed, 28 Mar 2007 19:46:58 -0400 Received: from mga03.intel.com ([143.182.124.21]:1696 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932853AbXC1Xq5 (ORCPT ); Wed, 28 Mar 2007 19:46:57 -0400 X-ExtLoop1: 1 X-IronPort-AV: i="4.14,342,1170662400"; d="scan'208"; a="204592097:sNHT17526005" Date: Wed, 28 Mar 2007 16:44:28 -0700 From: Kristen Carlson Accardi To: linux-kernel@vger.kernel.org Cc: akpm@linux-foundation.org, linux-ide@vger.kernel.org, jgarzik@pobox.com Subject: [patch 0/3] Asynchronous Notification for SATA ATAPI devices Message-Id: <20070328164428.716b4eae.kristen.c.accardi@intel.com> X-Mailer: Sylpheed version 2.2.10 (GTK+ 2.10.8; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This patch series implements Asynchronous Notification (AN) for SATA ATAPI devices as defined in SATA 2.5 and AHCI 1.1. Drives which support this feature will send a notification when new media is inserted into the drive, preventing the need for user space to poll for new media. This support is exposed to user space via a file in sysfs (/sys/block/sr*) called "media_change_events". If the drive supports AN, this file will read 1, otherwise 0. User space can disable polling for new media if this file reads 1. When new media is inserted into the ATAPI drive, the ahci driver will send a KOBJ_CHANGE event. I would really like feedback on the user interface - both the location of the sysfs file which indicates AN support, as well as the type of uevent etc. I have not yet tested AN on eject (I assume it doesn't require anything special) as my test drive which supports AN is a bit "quirky" in this respect. Please take a look and let me know what you think. Thanks, Kristen --