Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760553AbXEIXmx (ORCPT ); Wed, 9 May 2007 19:42:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760210AbXEIXlg (ORCPT ); Wed, 9 May 2007 19:41:36 -0400 Received: from mga02.intel.com ([134.134.136.20]:1444 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760165AbXEIXle (ORCPT ); Wed, 9 May 2007 19:41:34 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.14,512,1170662400"; d="scan'208";a="241424763" Date: Wed, 9 May 2007 16:38:35 -0700 From: Kristen Carlson Accardi To: jeff@garzik.org Cc: linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, htejun@gmail.com, Kristen Carlson Accardi Subject: [patch 5/7] genhd: send async notification on media change Message-Id: <20070509163835.56ad28e0.kristen.c.accardi@intel.com> In-Reply-To: <20070510072247.063476979@intel.com> References: <20070510072247.063476979@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 Content-Length: 2579 Lines: 81 Send an uevent to user space to indicate that a media change event has occurred. Signed-off-by: Kristen Carlson Accardi Index: 2.6-git/block/genhd.c =================================================================== --- 2.6-git.orig/block/genhd.c +++ 2.6-git/block/genhd.c @@ -643,6 +643,27 @@ struct seq_operations diskstats_op = { .show = diskstats_show }; +static void media_change_notify_thread(struct work_struct *work) +{ + struct gendisk *gd = container_of(work, struct gendisk, async_notify); + char event[] = "MEDIA_CHANGE=1"; + char *envp[] = { event, NULL }; + + /* + * set enviroment vars to indicate which event this is for + * so that user space will know to go check the media status. + */ + kobject_uevent_env(&gd->kobj, KOBJ_CHANGE, envp); + put_device(gd->driverfs_dev); +} + +void genhd_media_change_notify(struct gendisk *disk) +{ + get_device(disk->driverfs_dev); + schedule_work(&disk->async_notify); +} +EXPORT_SYMBOL_GPL(genhd_media_change_notify); + struct gendisk *alloc_disk(int minors) { return alloc_disk_node(minors, -1); @@ -672,6 +693,8 @@ struct gendisk *alloc_disk_node(int mino kobj_set_kset_s(disk,block_subsys); kobject_init(&disk->kobj); rand_initialize_disk(disk); + INIT_WORK(&disk->async_notify, + media_change_notify_thread); } return disk; } Index: 2.6-git/include/linux/genhd.h =================================================================== --- 2.6-git.orig/include/linux/genhd.h +++ 2.6-git/include/linux/genhd.h @@ -66,6 +66,7 @@ struct partition { #include #include #include +#include struct partition { unsigned char boot_ind; /* 0x80 - active */ @@ -139,6 +140,7 @@ struct gendisk { #else struct disk_stats dkstats; #endif + struct work_struct async_notify; }; /* Structure for sysfs attributes on block devices */ @@ -419,7 +421,7 @@ extern struct gendisk *alloc_disk_node(i extern struct gendisk *alloc_disk(int minors); extern struct kobject *get_disk(struct gendisk *disk); extern void put_disk(struct gendisk *disk); - +extern void genhd_media_change_notify(struct gendisk *disk); extern void blk_register_region(dev_t dev, unsigned long range, struct module *module, struct kobject *(*probe)(dev_t, int *, void *), -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/