convert get_sb_single() users

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index e2f63c0..9819a4c 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -574,16 +574,16 @@
 
 /* --------------------------------------------------------------------- */
 
-static int usb_get_sb(struct file_system_type *fs_type,
-	int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static struct dentry *usb_mount(struct file_system_type *fs_type,
+	int flags, const char *dev_name, void *data)
 {
-	return get_sb_single(fs_type, flags, data, usbfs_fill_super, mnt);
+	return mount_single(fs_type, flags, data, usbfs_fill_super);
 }
 
 static struct file_system_type usb_fs_type = {
 	.owner =	THIS_MODULE,
 	.name =		"usbfs",
-	.get_sb =	usb_get_sb,
+	.mount =	usb_mount,
 	.kill_sb =	kill_litter_super,
 };