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Re: [Qemu-block] [PATCH v3 15/22] block: Switch transfer length bounds t

From: Fam Zheng
Subject: Re: [Qemu-block] [PATCH v3 15/22] block: Switch transfer length bounds to byte-based
Date: Fri, 24 Jun 2016 14:06:19 +0800
User-agent: Mutt/1.6.1 (2016-04-27)

On Thu, 06/23 16:37, Eric Blake wrote:
> Sector-based limits are awkward to think about; in our on-going
> quest to move to byte-based interfaces, convert max_transfer_length
> and opt_transfer_length.  Rename them (dropping the _length suffix)
> so that the compiler will help us catch the change in semantics
> across any rebased code, and improve the documentation.  Use unsigned
> values, so that we don't have to worry about negative values and
> so that bit-twiddling is easier; however, we are still constrained
> by 2^31 of signed int in most APIs.
> When a value comes from an external source (iscsi and raw-posix),
> sanitize the results to ensure that opt_transfer is a power of 2.
> Signed-off-by: Eric Blake <address@hidden>

Reviewed-by: Fam Zheng <address@hidden>

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