From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Wilcox <willy@infradead.org>
Subject: Re: [virtio-dev] Re: [PATCH v11 3/6] virtio-balloon:
	VIRTIO_BALLOON_F_PAGE_CHUNKS
Date: Wed, 28 Jun 2017 08:04:50 -0700
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To: Wei Wang <wei.w.wang@intel.com>
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On Thu, Jun 15, 2017 at 04:10:17PM +0800, Wei Wang wrote:
> > So you still have a home-grown bitmap. I'd like to know why
> > isn't xbitmap suggested for this purpose by Matthew Wilcox
> > appropriate. Please add a comment explaining the requirements
> > from the data structure.
> 
> I didn't find his xbitmap being upstreamed, did you?

It doesn't have any users in the tree yet.  Can't add code with new users.
You should be the first!