Re: [PATCH v7 04/11] readahead: allocate folios with mapping_min_order in readahead

[Matthew Wilcox]

On Mon, Jun 17, 2024 at 04:04:20PM +0000, Pankaj Raghav (Samsung) wrote:
> On Mon, Jun 17, 2024 at 01:32:42PM +0100, Matthew Wilcox wrote:
> So the following can still be there from Hannes patch as we have a 
> stable reference:
> 
>  		ractl->_workingset |= folio_test_workingset(folio);
> -		ractl->_nr_pages++;
> +		ractl->_nr_pages += folio_nr_pages(folio);
> +		i += folio_nr_pages(folio);
>  	}

We _can_, but we just allocated it, so we know what size it is already.
I'm starting to feel that Hannes' patch should be combined with this
one.