line_write_room    74 arch/um/drivers/line.h extern int line_write_room(struct tty_struct *tty);
line_write_room    99 arch/um/drivers/ssl.c 	.write_room		= line_write_room,
line_write_room   106 arch/um/drivers/stdio_console.c 	.write_room		= line_write_room,