Re: [PATCH v13 1/9] block: Introduce queue limits for copy-offload support

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> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
> index b7b56871029c..dff56813f95a 100644
> --- a/include/uapi/linux/fs.h
> +++ b/include/uapi/linux/fs.h
> @@ -64,6 +64,9 @@ struct fstrim_range {
>  	__u64 minlen;
>  };
>  
> +/* maximum copy offload length, this is set to 128MB based on current testing */
> +#define COPY_MAX_BYTES	(1 << 27)

This should not be in the UAPI.  It is a totally arbitrary internal
limit.




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