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Re: [Xen-devel] [PATCH 0 of 4 v2] blkif.h: Document protocol and existing extensions

On Feb 15, 2012, at 1:14 AM, Jan Beulich wrote:

>>>> On 15.02.12 at 06:06, "Justin T. Gibbs" <justing@xxxxxxxxxxxxxxxx> wrote:
>> patch 4 (blkif.h: Define and document the request number/size/segments
>>          extension.)
>>   o Bump __XEN_LATEST_INTERFACE_VERSION to 0x00040201 and use this version
> Why? It got bumped very recently to 0x040200, your change could
> well go under that same version.

When reviewing the history of xen-compat.h, it appeared that the version was 
for each incompatible change.  Considering there are 8 bits of sub-minor space, 
wouldn't it be bumped?  It allows an integrator of new headers to review all 
change sets
associated with this one header file to understand the work required for an 
> (Which is not to say that I'm now
> suddenly agreeing to stuff under io/ being controlled by this).



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