> > > > - bufq_set_strat seems broken.
> > > >   have you read bufq_alloc/free?> 
> > > 
> > > I believe this is fixed in my latest patch.
> > 
> > it doesn't seem to be fixed.  have you tested it?
> 
> Can you please explain why is it broken? I would like to fix it
> but I don't know what's the problem. 

bufq_alloc at the end of bufq_set_strat stamps everything.

> I removed completely the struct disk_sched and replaced it with
> a pointer to char, is this ok now?

i personally prefer to use a structure for ioctl.

YAMAMOTO Takashi