Re: [PATCH v9 1/3] xfs: fix the calculation of length and end

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On Sat, Feb 04, 2023 at 02:58:36PM +0000, Shiyang Ruan wrote:
> @@ -222,8 +222,8 @@ xfs_dax_notify_failure(
>  		len -= ddev_start - offset;
>  		offset = 0;
>  	}
> -	if (offset + len > ddev_end)
> -		len -= ddev_end - offset;
> +	if (offset + len - 1 > ddev_end)
> +		len -= offset + len - 1 - ddev_end;

This _looks_ wrong.  Are you sure it shouldn't be:

		len = ddev_end - offset + 1;





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