diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index d8b733a..ced9b2d 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -35,10 +35,8 @@ struct dioattr {
 };
 #endif
 
-/*
- * Structure for XFS_IOC_FSGETXATTR[A] and XFS_IOC_FSSETXATTR.
- */
-#ifndef HAVE_FSXATTR
+/* check whether we have to define FS_IOC_FS[GS]ETXATTR ourselves */
+#ifndef FS_IOC_FSGETXATTR
 struct fsxattr {
 	__u32		fsx_xflags;	/* xflags field value (get/set) */
 	__u32		fsx_extsize;	/* extsize field value (get/set)*/
@@ -46,28 +44,49 @@ struct fsxattr {
 	__u32		fsx_projid;	/* project identifier (get/set) */
 	unsigned char	fsx_pad[12];
 };
+
+/*
+ * Flags for the fsx_xflags field
+ */
+#define FS_XFLAG_REALTIME	0x00000001	/* data in realtime volume */
+#define FS_XFLAG_PREALLOC	0x00000002	/* preallocated file extents */
+#define FS_XFLAG_IMMUTABLE	0x00000008	/* file cannot be modified */
+#define FS_XFLAG_APPEND		0x00000010	/* all writes append */
+#define FS_XFLAG_SYNC		0x00000020	/* all writes synchronous */
+#define FS_XFLAG_NOATIME	0x00000040	/* do not update access time */
+#define FS_XFLAG_NODUMP		0x00000080	/* do not include in backups */
+#define FS_XFLAG_RTINHERIT	0x00000100	/* create with rt bit set */
+#define FS_XFLAG_PROJINHERIT	0x00000200	/* create with parents projid */
+#define FS_XFLAG_NOSYMLINKS	0x00000400	/* disallow symlink creation */
+#define FS_XFLAG_EXTSIZE	0x00000800	/* extent size allocator hint */
+#define FS_XFLAG_EXTSZINHERIT	0x00001000	/* inherit inode extent size */
+#define FS_XFLAG_NODEFRAG	0x00002000	/* do not defragment */
+#define FS_XFLAG_FILESTREAM	0x00004000	/* use filestream allocator */
+#define FS_XFLAG_HASATTR	0x80000000	/* no DIFLAG for this	*/
+
+#define FS_IOC_FSGETXATTR     _IOR ('X', 31, struct fsxattr)
+#define FS_IOC_FSSETXATTR     _IOW ('X', 32, struct fsxattr)
+
 #endif
 
 /*
- * Flags for the bs_xflags/fsx_xflags field
- * There should be a one-to-one correspondence between these flags and the
- * XFS_DIFLAG_s.
+ * Flags for the bs_xflags/fsx_xflags field in FS_IOC_FS[GS]ETXATTR[A]
  */
-#define XFS_XFLAG_REALTIME	0x00000001	/* data in realtime volume */
-#define XFS_XFLAG_PREALLOC	0x00000002	/* preallocated file extents */
-#define XFS_XFLAG_IMMUTABLE	0x00000008	/* file cannot be modified */
-#define XFS_XFLAG_APPEND	0x00000010	/* all writes append */
-#define XFS_XFLAG_SYNC		0x00000020	/* all writes synchronous */
-#define XFS_XFLAG_NOATIME	0x00000040	/* do not update access time */
-#define XFS_XFLAG_NODUMP	0x00000080	/* do not include in backups */
-#define XFS_XFLAG_RTINHERIT	0x00000100	/* create with rt bit set */
-#define XFS_XFLAG_PROJINHERIT	0x00000200	/* create with parents projid */
-#define XFS_XFLAG_NOSYMLINKS	0x00000400	/* disallow symlink creation */
-#define XFS_XFLAG_EXTSIZE	0x00000800	/* extent size allocator hint */
-#define XFS_XFLAG_EXTSZINHERIT	0x00001000	/* inherit inode extent size */
-#define XFS_XFLAG_NODEFRAG	0x00002000  	/* do not defragment */
-#define XFS_XFLAG_FILESTREAM	0x00004000	/* use filestream allocator */
-#define XFS_XFLAG_HASATTR	0x80000000	/* no DIFLAG for this	*/
+#define	XFS_XFLAG_REALTIME	FS_XFLAG_REALTIME
+#define	XFS_XFLAG_PREALLOC	FS_XFLAG_PREALLOC
+#define	XFS_XFLAG_IMMUTABLE	FS_XFLAG_IMMUTABLE
+#define	XFS_XFLAG_APPEND	FS_XFLAG_APPEND
+#define	XFS_XFLAG_SYNC		FS_XFLAG_SYNC
+#define	XFS_XFLAG_NOATIME	FS_XFLAG_NOATIME
+#define	XFS_XFLAG_NODUMP	FS_XFLAG_NODUMP
+#define	XFS_XFLAG_RTINHERIT	FS_XFLAG_RTINHERIT
+#define	XFS_XFLAG_PROJINHERIT	FS_XFLAG_PROJINHERIT
+#define	XFS_XFLAG_NOSYMLINKS	FS_XFLAG_NOSYMLINKS
+#define	XFS_XFLAG_EXTSIZE	FS_XFLAG_EXTSIZE
+#define	XFS_XFLAG_EXTSZINHERIT	FS_XFLAG_EXTSZINHERIT
+#define	XFS_XFLAG_NODEFRAG	FS_XFLAG_NODEFRAG
+#define	XFS_XFLAG_FILESTREAM	FS_XFLAG_FILESTREAM
+#define	XFS_XFLAG_HASATTR	FS_XFLAG_HASATTR
 
 /*
  * Structure for XFS_IOC_GETBMAP.
@@ -513,8 +532,8 @@ typedef struct xfs_swapext
 #define XFS_IOC_ALLOCSP		_IOW ('X', 10, struct xfs_flock64)
 #define XFS_IOC_FREESP		_IOW ('X', 11, struct xfs_flock64)
 #define XFS_IOC_DIOINFO		_IOR ('X', 30, struct dioattr)
-#define XFS_IOC_FSGETXATTR	_IOR ('X', 31, struct fsxattr)
-#define XFS_IOC_FSSETXATTR	_IOW ('X', 32, struct fsxattr)
+#define XFS_IOC_FSGETXATTR	FS_IOC_FSGETXATTR
+#define XFS_IOC_FSSETXATTR	FS_IOC_FSSETXATTR
 #define XFS_IOC_ALLOCSP64	_IOW ('X', 36, struct xfs_flock64)
 #define XFS_IOC_FREESP64	_IOW ('X', 37, struct xfs_flock64)
 #define XFS_IOC_GETBMAP		_IOWR('X', 38, struct getbmap)
