KFIFO_LEN(9) FIFO Buffer KFIFO_LEN(9)NAMEkfifo_len - returns the number of bytes available in the FIFO
SYNOPSIS
unsigned int kfifo_len(struct kfifo * fifo);
ARGUMENTS
fifo
the fifo to be used.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 KFIFO_LEN(9)