mount_subtree    1430 fs/btrfs/super.c 	root = mount_subtree(mnt, subvol_name);
mount_subtree    3326 fs/namespace.c EXPORT_SYMBOL(mount_subtree);
mount_subtree     232 fs/nfs/nfs4super.c 	dentry = mount_subtree(root_mnt, export_path);
mount_subtree    2266 include/linux/fs.h extern struct dentry *mount_subtree(struct vfsmount *mnt, const char *path);