[PATCH v6 07/19] mm: Put readahead pages in cache earlier

[Christoph Hellwig]

On Wed, Feb 19, 2020 at 06:41:17AM -0800, Matthew Wilcox wrote:
> #define readahead_for_each(rac, page)                                   \
>         while ((page = readahead_page(rac)))
> 
> No more readahead_next() to forget to add to filesystems which don't use
> the readahead_for_each() iterator.  Ahem.

And then kill readahead_for_each and open code the above to make it
even more obvious?