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Date: Thu, 17 Nov 2011 14:43:51 +0100
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH v2 5/8] block: wait for overlapping requests
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To: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>, qemu-devel@nongnu.org

On 11/17/2011 02:40 PM, Stefan Hajnoczi wrote:
> When copy-on-read is enabled it is necessary to wait for overlapping
> requests before issuing new requests.  This prevents races between the
> copy-on-read and a write request.

What about discards?

Paolo