Name

kfifo_in_rec — puts some record data into the FIFO

Synopsis

__must_check unsigned int fsfunckfifo_in_rec (struct kfifo * fifo,
 void * from,
 unsigned int n,
 unsigned int recsize);
 

Arguments

fifo

the fifo to be used.

from

the data to be added.

n

the length of the data to be added.

recsize

size of record field

Description

This function copies n bytes from the from into the FIFO and returns the number of bytes which cannot be copied. A returned value greater than the n value means that the record doesn't fit into the buffer.

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