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Date: Fri, 22 Apr 2011 06:08:52 +0200
From: Christoph Hellwig <hch@lst.de>
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Subject: Re: [Qemu-devel] iSCSI support for QEMU, update
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To: ronniesahlberg@gmail.com
Cc: kwolf@redhat.com, hch@lst.de, qemu-devel@nongnu.org, stefanha@linux.vnet.ibm.com

On Fri, Apr 22, 2011 at 06:23:58AM +1000, ronniesahlberg@gmail.com wrote:
> iSCSI block driver for QEMU
> 
> Please find an updated iSCSI patch.
> This patch adds setting FUA on all writes when the bit
> BDRV_O_CACHE_WB is not set.

At this point you need to check for BDRV_O_CACHE_WB and BDRV_O_NOCACHE
as they both have writeback cache semantics.  I submitted a patch to clean
that up, but it didn't get merged yet.