wait_for_completion_io_timeout — waits for completion of a task (w/timeout)
unsigned long __sched wait_for_completion_io_timeout ( | struct completion * x, |
unsigned long timeout) ; |
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.
The return value is 0 if timed out, and positive (at least 1, or number of jiffies left till timeout) if completed.