Re: [PATCH v2 6/7] nfs: Optimize direct I/O to use folios for requests

[Pranjal Shrivastava]

On Fri, Jul 03, 2026 at 07:00:35AM -0700, Christoph Hellwig wrote:
> On Fri, Jul 03, 2026 at 12:46:58PM +0000, Pranjal Shrivastava wrote:
> > Do we have use-cases for a kernel user for direct I/O ? (Just curious to
> > know if there's something on the horizon).
> 
> Plenty.  Basically any storage on file driver, or storage / file system
> server:  loop, zloop, nvmet, scsi target and nfsd ar the ones I know off
> by head.
> 

Ack. I see! Thanks!

Regarding the page_folio impasse, how do you suggest we proceed? Should
I expose and use get_contig_folio_len() from bvec? Or should I move the
NFS helper into the iov_iter lib? (or both).

Also, do you suggest sending the Folio move as a standalone patch if it
is blocking the rest of the series or do we prefer keeping these in a
single series?

Thanks,
Praan