anchor.diff:    # ACLs for all filesystems that support them.
     FANOTIFY y
     TMPFS y
  +  FS_ENCRYPTION? m
     EXT2_FS_XATTR y
     EXT2_FS_POSIX_ACL y
     EXT2_FS_SECURITY y
  
positive.code:   OCFS2_DEBUG_MASKLOG? n
    BTRFS_FS_POSIX_ACL y
    UBIFS_FS_ADVANCED_COMPR? y
    ${optionalString (versionAtLeast version "4.0" && versionOlder version "4.6") ''
      NFSD_PNFS y
    ''}
  
negative.code:   EXT3_FS_POSIX_ACL y
    EXT3_FS_SECURITY y
    EXT4_FS_POSIX_ACL y
    EXT4_ENCRYPTION? ${if versionOlder version "4.8" then "m" else "y"}
    EXT4_FS_SECURITY y
    REISERFS_FS_XATTR? y
    REISERFS_FS_POSIX_ACL? y
  