Re: [PATCH v6 0/5] nfs: modernize direct I/O path

[Pranjal Shrivastava]

On Fri, Aug 14, 2026 at 02:32:50PM +0000, Pranjal Shrivastava wrote:
> Modernize the NFS Direct I/O path as a preparatory step to enable PCI
> Peer-to-Peer DMA (P2PDMA) support. Following feedback on the initial
> RFC [1], the modernization and architectural changes are split into
> different series. Additionally, based on the discussion in the v2 [2]
> of this series, the migration of NFS Direct I/O to folios would be
> handled in a separate follow-up series.
> 
> Currently, NFS O_DIRECT relies on the legacy iov_iter_get_pages_alloc2()
> API which does not support the pinning requirements for P2P memory.
> The implementation moves NFS to the modern iov_iter_extract_pages() API.
> 

Gentle ping on this series. 
(I realized that I sent it close to the merge window, Apologies).

Please let me know if anything else needs to be done for this..

[...]

> 
> [v6]
>  - Fixed double unpin bugs pointed out by Sashiko:
>    https://sashiko.dev/#/patchset/20260810195040.2877784-1-praan%40google.com
>  - Added R-bs from Christoph (due since v4)
> 
> [v5]
>  - https://lore.kernel.org/all/20260810195040.2877784-1-praan@xxxxxxxxxx/
>  - Fixed an iov_iter_revert oops in nfs_direct_extract_pages().
>  - Fixed a refcount underflow in nfs_direct_release_pages() during
>    swap-over-NFS by ensuring we do not call put_page() on unpinned memory.
>  - Rebased on fs-next
> 

[...]

Thanks,
Praan