Btrfs: delete unused function: btrfs_invalidate_dcache_root

	btrfs_btree_balance_dirty(root, nr);

	btrfs_btree_balance_dirty(root, nr);

}

}

/*

 * Invalidate a single dcache entry at the root of the filesystem.

 * Needed after creation of snapshot or subvolume.

 */

static void btrfs_invalidate_dcache_root(struct inode *dir,

		char *name, int namelen)

{

	struct dentry *alias, *entry;

	struct qstr qstr;

	alias = d_find_alias(dir);

	if (alias) {

		qstr.name = name;

		qstr.len = namelen;

		/* change me if btrfs ever gets a d_hash operation */

		qstr.hash = full_name_hash(qstr.name, qstr.len);

		entry = d_lookup(alias, &qstr);

		dput(alias);

		if (entry) {

			d_invalidate(entry);

			dput(entry);

		}

	}

}

/*

/*

 * create a new subvolume directory/inode (helper for the ioctl).

 * create a new subvolume directory/inode (helper for the ioctl).

 */

 */