FT_FIFO          5941 fs/btrfs/inode.c 	BUILD_BUG_ON(BTRFS_FT_FIFO != FT_FIFO);
FT_FIFO            14 fs/fs_types.c  	[FT_FIFO]	= DT_FIFO,
FT_FIFO            56 fs/fs_types.c  	[DT_FIFO]	= FT_FIFO,