1 files changed, 28 insertions, 0 deletions

diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index 7a02d391afec..c5eeb3241e25 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -699,6 +699,29 @@ xfs_bmbt_key_diff(
                                       cur->bc_rec.b.br_startoff;
 }
 
+#ifdef DEBUG
+STATIC int
+xfs_bmbt_keys_inorder(
+        struct xfs_btree_cur    *cur,
+        union xfs_btree_key     *k1,
+        union xfs_btree_key     *k2)
+{
+        return be64_to_cpu(k1->bmbt.br_startoff) <
+                be64_to_cpu(k2->bmbt.br_startoff);
+}
+
+STATIC int
+xfs_bmbt_recs_inorder(
+        struct xfs_btree_cur    *cur,
+        union xfs_btree_rec     *r1,
+        union xfs_btree_rec     *r2)
+{
+        return xfs_bmbt_disk_get_startoff(&r1->bmbt) +
+                xfs_bmbt_disk_get_blockcount(&r1->bmbt) <=
+                xfs_bmbt_disk_get_startoff(&r2->bmbt);
+}
+#endif  /* DEBUG */
+
 #ifdef XFS_BTREE_TRACE
 ktrace_t        *xfs_bmbt_trace_buf;
 
@@ -801,6 +824,11 @@ static const struct xfs_btree_ops xfs_bmbt_ops = {
         .init_ptr_from_cur      = xfs_bmbt_init_ptr_from_cur,
         .key_diff               = xfs_bmbt_key_diff,
 
+#ifdef DEBUG
+        .keys_inorder           = xfs_bmbt_keys_inorder,
+        .recs_inorder           = xfs_bmbt_recs_inorder,
+#endif
+
 #ifdef XFS_BTREE_TRACE
         .trace_enter            = xfs_bmbt_trace_enter,
         .trace_cursor           = xfs_bmbt_trace_cursor,