Re: [GIT PULL] xen blkfront barrier updates

From: Jens Axboe
Date: Fri Nov 12 2010 - 02:46:08 EST


On 2010-11-12 00:20, Jeremy Fitzhardinge wrote:
> Hi Jens,
>
> Here's the xen-blkfront barrier changes we discussed in Boston (its
> identical to the last posted version).
>
> The only comment was Christoph pointing out EOPNOTSUPP is not used in
> the block interface, but blkfront is just using it as a local
> placeholder and it never gets returned up to the block layer.
>
> I still haven't sorted out what's going on with the backends; we
> definitely need either a FLUSH operation or make empty WRITE_BARRIER
> work to flush disk caches.

Thanks Jeremy, I'll pull this in.

--
Jens Axboe

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