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diff --git a/fs/xfs/scrub/dabtree.h b/fs/xfs/scrub/dabtree.h
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+/*
+ * Copyright (C) 2017 Oracle. All Rights Reserved.
+ *
+ * Author: Darrick J. Wong <darrick.wong@oracle.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#ifndef __XFS_SCRUB_DABTREE_H__
+#define __XFS_SCRUB_DABTREE_H__
+
+/* dir/attr btree */
+
+struct xfs_scrub_da_btree {
+ struct xfs_da_args dargs;
+ xfs_dahash_t hashes[XFS_DA_NODE_MAXDEPTH];
+ int maxrecs[XFS_DA_NODE_MAXDEPTH];
+ struct xfs_da_state *state;
+ struct xfs_scrub_context *sc;
+
+ /*
+ * Lowest and highest directory block address in which we expect
+ * to find dir/attr btree node blocks. For a directory this
+ * (presumably) means between LEAF_OFFSET and FREE_OFFSET; for
+ * attributes there is no limit.
+ */
+ xfs_dablk_t lowest;
+ xfs_dablk_t highest;
+
+ int tree_level;
+};
+
+typedef int (*xfs_scrub_da_btree_rec_fn)(struct xfs_scrub_da_btree *ds,
+ int level, void *rec);
+
+/* Check for da btree operation errors. */
+bool xfs_scrub_da_process_error(struct xfs_scrub_da_btree *ds, int level, int *error);
+
+/* Check for da btree corruption. */
+void xfs_scrub_da_set_corrupt(struct xfs_scrub_da_btree *ds, int level);
+
+int xfs_scrub_da_btree_hash(struct xfs_scrub_da_btree *ds, int level,
+ __be32 *hashp);
+int xfs_scrub_da_btree(struct xfs_scrub_context *sc, int whichfork,
+ xfs_scrub_da_btree_rec_fn scrub_fn);
+
+#endif /* __XFS_SCRUB_DABTREE_H__ */