From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031488AbXEDSPH (ORCPT ); Fri, 4 May 2007 14:15:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031494AbXEDSPG (ORCPT ); Fri, 4 May 2007 14:15:06 -0400 Received: from mga02.intel.com ([134.134.136.20]:11277 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031488AbXEDSOx (ORCPT ); Fri, 4 May 2007 14:14:53 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.14,493,1170662400"; d="scan'208";a="239391348" Date: Fri, 4 May 2007 11:12:22 -0700 From: Kristen Carlson Accardi To: jeff@garzik.org Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, htejun@gmail.com, akpm@linux-foundation.org Subject: [patch 0/7] Asynchronous Notification for ATAPI devices (v2) - resend Message-Id: <20070504111222.c2e373cf.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 and higher. Drives which support this feature will send a notification when new media is inserted and removed, preventing the need for user space to poll for new media. This support is exposed to user space via a flag that will be set in /sys/block/sr*/capability_flags. If the flag is set, user space can disable polling for the new media, and the genhd driver will send a KOBJ_CHANGE event with the envp set to MEDIA_CHANGE_EVENT=1. Note that this patch only implements support for directly attached drives - AN with drives attached to a port multiplier requires additional changes. Thanks! Kristen -- --