Re: [PATCH] add unschedule_delayed_work to the workqueue API

[James Bottomley <James.Bottomley@SteelEye.com>]

On Mon, 2004-10-18 at 16:25, Andrew Morton wrote:
> James Bottomley <James.Bottomley@SteelEye.com> wrote:
> >
> > I'm in the process of moving some of our scsi timers which do more work
> > than just a few lines of code into schedule_work() instead.  The problem
> > is that the workqueue API lacks the equivalent of del_timer_sync(). 
> 
> The usual way of doing this is:
> 
> 	cancel_delayed_work(...);

That API doesn't seem to be in the vanilla kernel ... is it mm only?

> 	flush_workqueue(...);

Yes, but the flush_workqueue() has you waiting until every piece of work
on the workqueue has completed ... that creates an unacceptable delay in
the routine that wants it either cancelled or run.

James