-#ifdef LIBLUSTRE_POSIX_ACL
-# ifndef posix_acl_xattr_entry
-# define posix_acl_xattr_entry xattr_acl_entry
-# endif
-# ifndef posix_acl_xattr_header
-# define posix_acl_xattr_header xattr_acl_header
-# endif
-# ifndef posix_acl_xattr_size
-# define posix_acl_xattr_size(entry) xattr_acl_size(entry)
-# endif
-# ifndef CONFIG_FS_POSIX_ACL
-# define CONFIG_FS_POSIX_ACL 1
-# endif