diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 7ac2b0a..5911508 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -791,9 +791,13 @@
 /* i: Don't mark inodes DONTCACHE at the end. */
 #define XFS_SCRUB_IFLAG_RETAIN_INODES	(1 << 9)
 
+/* i: Rebuild the data structure. */
+#define XFS_SCRUB_IFLAG_FORCE_REBUILD	(1 << 10)
+
 #define XFS_SCRUB_FLAGS_IN	(XFS_SCRUB_IFLAG_REPAIR | \
 				 XFS_SCRUB_IFLAG_FREEZE_OK | \
-				 XFS_SCRUB_IFLAG_RETAIN_INODES)
+				 XFS_SCRUB_IFLAG_RETAIN_INODES | \
+				 XFS_SCRUB_IFLAG_FORCE_REBUILD)
 #define XFS_SCRUB_FLAGS_OUT	(XFS_SCRUB_OFLAG_CORRUPT | \
 				 XFS_SCRUB_OFLAG_PREEN | \
 				 XFS_SCRUB_OFLAG_XFAIL | \
diff --git a/man/man2/ioctl_xfs_scrub_metadata.2 b/man/man2/ioctl_xfs_scrub_metadata.2
index 44298c0..5e9bbd2 100644
--- a/man/man2/ioctl_xfs_scrub_metadata.2
+++ b/man/man2/ioctl_xfs_scrub_metadata.2
@@ -236,6 +236,11 @@
 .B XFS_SCRUB_IFLAG_RETAIN_INODES
 Tag scrubbed inodes as DONTCACHE so that we don't purge the inode
 caches.
+.TP
+.B XFS_SCRUB_IFLAG_FORCE_REBUILD
+Force the kernel to rebuild the specified piece of metadata, even if it's
+healthy.
+This can only be specified by the system administrator.
 .RE
 .PP
 For metadata checkers that operate on inodes or inode metadata, the fields