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Date: Thu, 27 Oct 2011 10:53:42 +0200
From: Kevin Wolf <kwolf@redhat.com>
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Cc: qemu-trivial@nongnu.org, Stefan Weil <weil@mail.berlios.de>,
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Subject: Re: [Qemu-trivial] [PATCH] Teach block/vdi about "discarded" (no
 longer allocated) blocks
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Am 26.10.2011 21:51, schrieb Eric Sunshine:
> An entry in the VDI block map will hold an offset to the actual block if
> the block is allocated, or one of two specially-interpreted values if
> not allocated. Using VirtualBox terminology, value VDI_IMAGE_BLOCK_FREE
> (0xffffffff) represents a never-allocated block (semantically arbitrary
> content).  VDI_IMAGE_BLOCK_ZERO (0xfffffffe) represents a "discarded"
> block (semantically zero-filled).  block/vdi knows only about
> VDI_IMAGE_BLOCK_FREE.  Teach it about VDI_IMAGE_BLOCK_ZERO.
> 
> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>

Thanks, applied to the block branch.

Kevin