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Date: Tue, 22 Feb 2011 09:57:10 -0600
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] Re: Strategic decision: COW format
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To: Kevin Wolf <kwolf@redhat.com>
Cc: Chunqiang Tang <ctang@us.ibm.com>, Markus Armbruster <armbru@redhat.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, qemu-devel@nongnu.org

On 02/22/2011 02:56 AM, Kevin Wolf wrote:
>
> *sigh*
>
> It starts to get annoying, but if you really insist, I can repeat it
> once more: These features that you don't need (this is the correct
> description for what you call "misfeatures") _are_ implemented in a way
> that they don't impact the "normal" case.

Except that they require a refcount table that adds additional metadata 
that needs to be updated in the fast path.  I consider that impacting 
the normal case.

Regards,

Anthony Liguori

>   And they are it today.
>
> Kevin
>