suse man page for kfifo_out

KFIFO_OUT(9)							    FIFO Buffer 						      KFIFO_OUT(9)

NAME
       kfifo_out - gets some data from the FIFO

SYNOPSIS
       unsigned int kfifo_out(struct kfifo * fifo, void * to, unsigned int len);

ARGUMENTS
       fifo
	   the fifo to be used.

       to
	   where the data must be copied.

       len
	   the size of the destination buffer.

DESCRIPTION
       This function copies at most len bytes from the FIFO into the to buffer and returns the number of copied bytes.

       Note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these functions.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							      KFIFO_OUT(9)