Re: [PATCH 04/12] libxenguest: avoid allocating unused deferred-pages bitmap

[Ian Jackson <iwj@xxxxxxxxxxxxxx>]

Jan Beulich writes ("Re: [PATCH 04/12] libxenguest: avoid allocating unused 
deferred-pages bitmap"):
> [stuff]

I have read this conversation several times and it is not clear to me
whether Andrew was saying Jan's patch is bad, or the existing code is
bad.

I'm hesitant to give an ack for an optimisation without understanding
what the implications might be.  Andrew, can you explain what will go
wrong if we take Jan's patch ?

(I amk not really familiar with this area of the code.  If necessary I
could go and read it to form my own opinion.)

Thanks,
Ian.