Re: [PATCH v5 5/9] xfs: cap the block count of xfs_iomap_write_direct() at one extent

[Pankaj Raghav (Samsung)]

On Thu, Oct 29, 2026 at 11:23:02AM +0900, Daejun Park wrote:
> xfs_iomap_write_direct() reserves blocks for the whole count in an
> unsigned int. For a pNFS layout the client chooses that count, and an
> RW LAYOUTGET for 16 TiB wraps the reservation and shuts XFS down.
> 
> xfs_bmapi_write() maps at most XFS_MAX_BMBT_EXTLEN blocks here, so cap
> the count at that. nfsd asks again for the rest. The other callers get
> the same mapping as before.
> 
> Suggested-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> Link: https://lore.kernel.org/r/20261008154017.GO2705364@frogsfrogsfrogs
> Suggested-by: Christoph Hellwig <hch@xxxxxx>
> Link: https://lore.kernel.org/r/20261015060932.GD14035@xxxxxx
> Suggested-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>
> Link: https://lore.kernel.org/r/atoImJxtg70XcIjS@quentin
> Fixes: 527851124d10 ("xfs: implement pNFS export operations")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Daejun Park <daejun7.park@xxxxxxxxxxx>
> ---

I know Carlos already merged it but:
Reviewed-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx>

-- 
Pankaj