mm: bdi: export BDI attributes in sysfs

[pandora-kernel.git] / block / genhd.c

diff --git a/block/genhd.c b/block/genhd.c
index 00da521..fda9c7a 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -182,11 +182,17 @@ static int exact_lock(dev_t devt, void *data)
  */
 void add_disk(struct gendisk *disk)
 {
+       struct backing_dev_info *bdi;
+
        disk->flags |= GENHD_FL_UP;
        blk_register_region(MKDEV(disk->major, disk->first_minor),
                            disk->minors, NULL, exact_match, exact_lock, disk);
        register_disk(disk);
        blk_register_queue(disk);
+
+       bdi = &disk->queue->backing_dev_info;
+       bdi_register_dev(bdi, MKDEV(disk->major, disk->first_minor));
+       sysfs_create_link(&disk->dev.kobj, &bdi->dev->kobj, "bdi");
 }
 
 EXPORT_SYMBOL(add_disk);
@@ -194,6 +200,8 @@ EXPORT_SYMBOL(del_gendisk); /* in partitions/check.c */
 
 void unlink_gendisk(struct gendisk *disk)
 {
+       sysfs_remove_link(&disk->dev.kobj, "bdi");
+       bdi_unregister(&disk->queue->backing_dev_info);
        blk_unregister_queue(disk);
        blk_unregister_region(MKDEV(disk->major, disk->first_minor),
                              disk->minors);