From: Miklos Szeredi <mszeredi@suse.cz>

Uniformly use MAJOR:MINOR in /sys/class/bdi/ for both block devices
and non-block device backed filesystems: FUSE and NFS.

Add symlink for block devices:

    /sys/block/<name>/bdi -> /sys/class/bdi/<bdi>

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/nfs/super.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff -puN fs/nfs/super.c~mm-bdi-expose-the-bdi-object-in-sysfs-for-nfs-fix fs/nfs/super.c
--- a/fs/nfs/super.c~mm-bdi-expose-the-bdi-object-in-sysfs-for-nfs-fix
+++ a/fs/nfs/super.c
@@ -1572,8 +1572,7 @@ static int nfs_compare_super(struct supe
 
 static int nfs_bdi_register(struct nfs_server *server)
 {
-	return bdi_register(&server->backing_dev_info, NULL, "nfs-%u:%u",
-			    MAJOR(server->s_dev), MINOR(server->s_dev));
+	return bdi_register_dev(&server->backing_dev_info, server->s_dev);
 }
 
 static int nfs_get_sb(struct file_system_type *fs_type,
_