DF                111 arch/m68k/include/asm/traps.h #define DF    (0x0100)
DF                 15 drivers/scsi/aha1542.h #define DF	BIT(2)		/* Data In Port Full */
DF                 57 fs/reiserfs/procfs.c #define DF( x ) D2C( rs -> s_v1.x )