Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: restore original behavior of /proc/partition when there's no partition
  remove blk_register_filter and blk_unregister_filter in gendisk

block/cmd-filter.c

@@ -223,6 +223,7 @@ int blk_register_filter(struct gendisk *disk)
 
 	return 0;
 }
+EXPORT_SYMBOL(blk_register_filter);
 
 void blk_unregister_filter(struct gendisk *disk)
 {
@@ -231,4 +232,4 @@ void blk_unregister_filter(struct gendisk *disk)
 	kobject_put(&filter->kobj);
 	kobject_put(disk->holder_dir->parent);
 }
-
+EXPORT_SYMBOL(blk_unregister_filter);

block/genhd.c

@@ -190,7 +190,6 @@ void add_disk(struct gendisk *disk)
 			    disk->minors, NULL, exact_match, exact_lock, disk);
 	register_disk(disk);
 	blk_register_queue(disk);
-	blk_register_filter(disk);
 
 	bdi = &disk->queue->backing_dev_info;
 	bdi_register_dev(bdi, MKDEV(disk->major, disk->first_minor));
@@ -203,7 +202,6 @@ EXPORT_SYMBOL(del_gendisk);	/* in partitions/check.c */
 
 void unlink_gendisk(struct gendisk *disk)
 {
-	blk_unregister_filter(disk);
 	sysfs_remove_link(&disk->dev.kobj, "bdi");
 	bdi_unregister(&disk->queue->backing_dev_info);
 	blk_unregister_queue(disk);
@@ -309,7 +307,7 @@ static void *part_start(struct seq_file *part, loff_t *pos)
 	loff_t k = *pos;
 
 	if (!k)
-		seq_puts(part, "major minor  #blocks  name\n\n");
+		part->private = (void *)1LU;	/* tell show to print header */
 
 	mutex_lock(&block_class_lock);
 	dev = class_find_device(&block_class, NULL, &k, find_start);
@@ -351,6 +349,17 @@ static int show_partition(struct seq_file *part, void *v)
 	int n;
 	char buf[BDEVNAME_SIZE];
 
+	/*
+	 * Print header if start told us to do.  This is to preserve
+	 * the original behavior of not printing header if no
+	 * partition exists.  This hackery will be removed later with
+	 * class iteration clean up.
+	 */
+	if (part->private) {
+		seq_puts(part, "major minor  #blocks  name\n\n");
+		part->private = NULL;
+	}
+
 	/* Don't show non-partitionable removeable devices or empty devices */
 	if (!get_capacity(sgp) ||
 			(sgp->minors == 1 && (sgp->flags & GENHD_FL_REMOVABLE)))

drivers/ide/ide-cd.c

@@ -1933,6 +1933,7 @@ static void ide_cd_remove(ide_drive_t *drive)
 
 	ide_proc_unregister_driver(drive, info->driver);
 
+	blk_unregister_filter(info->disk);
 	del_gendisk(info->disk);
 
 	ide_cd_put(info);
@@ -2158,6 +2159,7 @@ static int ide_cd_probe(ide_drive_t *drive)
 	g->fops = &idecd_ops;
 	g->flags |= GENHD_FL_REMOVABLE;
 	add_disk(g);
+	blk_register_filter(g);
 	return 0;
 
 out_free_cd:

drivers/scsi/sd.c

@@ -1875,6 +1875,7 @@ static int sd_probe(struct device *dev)
 
 	dev_set_drvdata(dev, sdkp);
 	add_disk(gd);
+	blk_register_filter(gd);
 	sd_dif_config_host(sdkp);
 
 	sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n",
@@ -1908,6 +1909,7 @@ static int sd_remove(struct device *dev)
 	struct scsi_disk *sdkp = dev_get_drvdata(dev);
 
 	device_del(&sdkp->dev);
+	blk_unregister_filter(sdkp->disk);
 	del_gendisk(sdkp->disk);
 	sd_shutdown(dev);
 

drivers/scsi/sr.c

@@ -656,6 +656,7 @@ static int sr_probe(struct device *dev)
 	dev_set_drvdata(dev, cd);
 	disk->flags |= GENHD_FL_REMOVABLE;
 	add_disk(disk);
+	blk_register_filter(disk);
 
 	sdev_printk(KERN_DEBUG, sdev,
 		    "Attached scsi CD-ROM %s\n", cd->cdi.name);
@@ -894,6 +895,7 @@ static int sr_remove(struct device *dev)
 {
 	struct scsi_cd *cd = dev_get_drvdata(dev);
 
+	blk_unregister_filter(cd->disk);
 	del_gendisk(cd->disk);
 
 	mutex_lock(&sr_ref_mutex);