Re: [PATCH 03/33] mm: Implement readahead_control pageset expansion

David Howells
2021-02-17T22:20:56Z

Mike Marshall <hubcap@omnibond.com> wrote:

> Matthew has looked at how I'm fumbling about
> trying to deal with Orangefs's need for much larger
> than page-sized IO...
>
> I think I need to implement orangefs_readahead
> and from there fire off an asynchronous read
> and while that's going I'll call readahead_page
> with a rac that I've cranked up with readahead_expand
> and when the read gets done I'll have plenty of pages
> for the large IO I did.

Would the netfs helper lib in patches 5-13 here be of use to orangefs? Most
of the information about it is on patch 8.

David