- bool flush_work_sync(struct work_struct * work);
- the work to flush
Wait until work has finished execution. On return, it's guaranteed that all queueing instances of work which happened before this function is called are finished. In other words, if work hasn't been requeued since this function was called, work is guaranteed to be idle on return.
true if flush_work_sync waited for the work to finish execution, false if it was already idle.