@@ -17,7 +17,19 @@ vary depending on the extent allocator used in the XFS driver.
An extent is 128 bits in size and uses the following packed layout:
.Extent record format
-image::images/31.png[]
+
+[cols="1,1,1,1"]
+|===
+|bit[127]
+|bits[73-126]
+|bits[21-72]
+|bits[0-20]
+
+|flag
+|logical file block offset
+|absolute block number
+|# of blocks
+|===
The extent is represented by the +xfs_bmbt_rec+ structure which uses a big
endian format on-disk. In-core management of extents use the +xfs_bmbt_irec+