Provided by: linux-doc-2.6.15_2.6.15-23.39_all __kfifo_get -
gets some data from the FIFO, no locking version unsigned int
__kfifo_get (struct kfifo * fifo, unsigned char * buffer,
unsigned int len); fifo the fifo to be used. buffer where the
data must be copied. len the size of the destination buffer.
This function copies at most ’len’ bytes from the FIFO into the
’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.