FLUSH_WORK(9) Driver Basics FLUSH_WORK(9)
NAME flush_work - block until a work_struct´s callback has terminated
SYNOPSIS int flush_work(struct work_struct * work);
ARGUMENTS work the work which is to be flushed
DESCRIPTION Returns false if work has already terminated.
It is expected that, prior to calling flush_work, the caller has arranged for the work to not be requeued, otherwise it doesn´t make sense to use this function.
COPYRIGHT Kernel Hackers Manual 2.6. November 2013 FLUSH_WORK(9)