1 files changed, 25 insertions, 0 deletions

diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index d30ee7498606..428e81f0e27e 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -80,6 +80,31 @@ typedef struct xfs_btree_block {
 } xfs_btree_block_t;
 
 /*
+ * Generic key, ptr and record wrapper structures.
+ *
+ * These are disk format structures, and are converted where necessary
+ * by the btree specific code that needs to interpret them.
+ */
+union xfs_btree_ptr {
+        __be32                  s;      /* short form ptr */
+        __be64                  l;      /* long form ptr */
+};
+
+union xfs_btree_key {
+        xfs_bmbt_key_t          bmbt;
+        xfs_bmdr_key_t          bmbr;   /* bmbt root block */
+        xfs_alloc_key_t         alloc;
+        xfs_inobt_key_t         inobt;
+};
+
+union xfs_btree_rec {
+        xfs_bmbt_rec_t          bmbt;
+        xfs_bmdr_rec_t          bmbr;   /* bmbt root block */
+        xfs_alloc_rec_t         alloc;
+        xfs_inobt_rec_t         inobt;
+};
+
+/*
  * For logging record fields.
  */
 #define XFS_BB_MAGIC            0x01