Name
kfifo_in — 
     put data into the fifo
 
Synopsis
|  kfifo_in ( | fifo, | 
|  | buf, | 
|  | n ); | 
 
Arguments
- fifo
- 
     address of the fifo to be used
     
- buf
- 
     the data to be added
     
- n
- 
     number of elements to be added
     
Description
   This macro copies the given buffer into the fifo and returns the
   number of copied elements.
   
   Note that with only one concurrent reader and one concurrent
   writer, you don't need extra locking to use these macro.