[PATCH] fb_defio: Remove custom address_space_operations

[Matthew Wilcox]

On Wed, Mar 10, 2021 at 06:38:07PM +0000, William Kucharski wrote:
> Looks good, just one super minor nit inline.
> > @@ -228,13 +202,6 @@ void fb_deferred_io_cleanup(struct fb_info *info)
> > 
> > 	BUG_ON(!fbdefio);
> > 	cancel_delayed_work_sync(&info->deferred_work);
> > -
> > -	/* clear out the mapping that we setup */
> > -	for (i = 0 ; i < info->fix.smem_len; i += PAGE_SIZE) {
> > -		page = fb_deferred_io_page(info, i);
> > -		page->mapping = NULL;
> > -	}
> > -
> > 	mutex_destroy(&fbdefio->lock);
> > }
> 
> We no longer need the definition of "int i" right before the BUG_ON().

Huh.  Usually gcc warns about that.  let me figure that out and post a v2.