suse man page for kfifo_to_user

KFIFO_TO_USER(9)						    FIFO Buffer 						  KFIFO_TO_USER(9)

NAME
       kfifo_to_user - gets data from the FIFO and write it to user space

SYNOPSIS
       int kfifo_to_user(struct kfifo * fifo, void __user * to, unsigned int len, unsigned * lenout);

ARGUMENTS
       fifo
	   the fifo to be used.

       to
	   where the data must be copied.

       len
	   the size of the destination buffer.

       lenout
	   pointer to output variable with copied data

DESCRIPTION
       This function copies at most len bytes from the FIFO into the to buffer and 0 or -EFAULT.

       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_TO_USER(9)