Re: [PATCH RFC V2 14/17] dax: Stray write protection for dax_direct_access()

[Ira Weiny]

On Fri, Jul 17, 2020 at 11:22:43AM +0200, Peter Zijlstra wrote:
> On Fri, Jul 17, 2020 at 12:20:53AM -0700, ira.weiny@xxxxxxxxx wrote:
> 
> > --- a/drivers/dax/super.c
> > +++ b/drivers/dax/super.c
> > @@ -30,12 +30,14 @@ static DEFINE_SPINLOCK(dax_host_lock);
> >  
> >  int dax_read_lock(void)
> >  {
> > +	dev_access_enable();
> >  	return srcu_read_lock(&dax_srcu);
> >  }
> >  EXPORT_SYMBOL_GPL(dax_read_lock);
> >  
> >  void dax_read_unlock(int id)
> >  {
> > +	dev_access_disable();
> >  	srcu_read_unlock(&dax_srcu, id);
> >  }
> >  EXPORT_SYMBOL_GPL(dax_read_unlock);
> 
> This is inconsistently ordered.

Thanks, good catch.

Fixed.
Ira