Make struct boot_params a real structure, and remove obsolete fields

[linux-2.6] / block / genhd.c

diff --git a/block/genhd.c b/block/genhd.c
index 7efa8bb25da931af28e98d4040dc2f5ca2d26535..863a8c0623ed824e27d85f32a52cf10ea39d1c02 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -696,6 +696,27 @@ 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);
@@ -725,6 +746,8 @@ struct gendisk *alloc_disk_node(int minors, int node_id)
                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;
 }