WAIT_FOR_COMPLETION_(9) Driver Basics WAIT_FOR_COMPLETION_(9)NAMEwait_for_completion_io_timeout - waits for completion of a task
(w/timeout)
SYNOPSIS
unsigned long __sched
wait_for_completion_io_timeout(struct completion * x,
unsigned long timeout);
ARGUMENTS
x
holds the state of this particular completion
timeout
timeout value in jiffies
DESCRIPTION
This waits for either a completion of a specific task to be signaled or
for a specified timeout to expire. The timeout is in jiffies. It is not
interruptible. The caller is accounted as waiting for IO.
RETURN
0 if timed out, and positive (at least 1, or number of jiffies left
till timeout) if completed.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 WAIT_FOR_COMPLETION_(9)