MTFSF (reference) in projects: linux-4.19.296

27 #define MTFSF	1	/* forward space over FileMark,  macro

545 		if ((rc = tape_mtop(device, MTFSF, 1)) < 0)  in tape_std_mteom()

1303 	if (mt_op == MTBSR  || mt_op == MTFSR  || mt_op == MTFSF  ||  in tape_mtop()

/linux-4.19.296/include/uapi/linux/
D	mtio.h	`27 #define MTFSF 1 /* forward space over FileMark, macro`
/linux-4.19.296/drivers/s390/char/
D	tape_char.c	`361 case MTFSF: in __tapechar_ioctl()`
D	tape_std.c	`545 if ((rc = tape_mtop(device, MTFSF, 1)) < 0) in tape_std_mteom()`
D	tape_34xx.c	`1121 [MTFSF] = tape_std_mtfsf,`
D	tape_core.c	`1303 if (mt_op == MTBSR \|\| mt_op == MTFSR \|\| mt_op == MTFSF \|\| in tape_mtop()`
D	tape_3590.c	`1583 [MTFSF] = tape_std_mtfsf,`