FT_UNKNOWN       5936 fs/btrfs/inode.c 	BUILD_BUG_ON(BTRFS_FT_UNKNOWN != FT_UNKNOWN);
FT_UNKNOWN          9 fs/fs_types.c  	[FT_UNKNOWN]	= DT_UNKNOWN,
FT_UNKNOWN       1703 fs/ocfs2/dir.c 			de->file_type = FT_UNKNOWN;