On Tue, Nov 09, 2021 at 09:33:04AM +0100, Christoph Hellwig wrote:
> While the buffered write iomap ops do work due to the fact that zeroing
> never allocates blocks, the DAX zeroing should use the direct ops just
> like actual DAX I/O.
> 
> Signed-off-by: Christoph Hellwig <h...@lst.de>

Heh.  I've wanted to fix this for a long time, but I like your
surrounding cleanups better than anything I had time to work on. :)

Reviewed-by: Darrick J. Wong <djw...@kernel.org>

--D

> ---
>  fs/xfs/xfs_iomap.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
> index 8cef3b68cba78..704292c6ce0c7 100644
> --- a/fs/xfs/xfs_iomap.c
> +++ b/fs/xfs/xfs_iomap.c
> @@ -1324,7 +1324,7 @@ xfs_zero_range(
>  
>       if (IS_DAX(inode))
>               return dax_zero_range(inode, pos, len, did_zero,
> -                                   &xfs_buffered_write_iomap_ops);
> +                                   &xfs_direct_write_iomap_ops);
>       return iomap_zero_range(inode, pos, len, did_zero,
>                               &xfs_buffered_write_iomap_ops);
>  }
> @@ -1339,7 +1339,7 @@ xfs_truncate_page(
>  
>       if (IS_DAX(inode))
>               return dax_truncate_page(inode, pos, did_zero,
> -                                     &xfs_buffered_write_iomap_ops);
> +                                     &xfs_direct_write_iomap_ops);
>       return iomap_truncate_page(inode, pos, did_zero,
>                                  &xfs_buffered_write_iomap_ops);
>  }
> -- 
> 2.30.2
> 

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