suse man page for flush_work

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.					     July 2010							     FLUSH_WORK(9)