Re: [PATCH v8 00/10] iov_iter: Improve page extraction (pin or just list)

[David Hildenbrand]

On 24.01.23 14:32, Christoph Hellwig wrote:
> On Tue, Jan 24, 2023 at 02:22:36PM +0100, David Hildenbrand wrote:
> > > Note that while these series coverts the two most commonly used
> > > O_DIRECT implementations, there are various others ones that do not
> > > pin the pages yet.
> >
> > Thanks for the info ... I assume these are then for other filesystems,
> > right? (such that we could adjust the tests to exercise these as well)
>
> Yes.  There's the fs/direct-io.c code still used by a few block based
> file systems, and then all the not block based file systems as well
> (e.g. NFS, cifs).
>
> > ... do we have a list (or is it easy to make one)? :)
>
> fs/direct-io.c is easy, just grep for blockdev_direct_IO.
>
> The others are more complicated to find, but a grep for
> iov_iter_get_pages2 and iov_iter_get_pages_alloc2 in fs/ should be a
> good approximation.

Right, iov_iter_get_pages2() includes vmsplice() that still needs love. 
Thanks!

--
Thanks,

David / dhildenb