Re: [PATCH resend] block: silently error unsupported empty barriers too

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Subject: Re: [PATCH resend] block: silently error unsupported empty barriers too
From: Alasdair G Kergon <agk@xxxxxxxxxx>
Date: Thu, 15 Oct 2009 01:23:50 +0100
Cc: Mark McLoughlin <markmc@xxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, device-mapper development <dm-devel@xxxxxxxxxx>, Mikulas Patocka <mpatocka@xxxxxxxxxx>
In-reply-to: <1251992870.3084.125.camel@blaa>
Mail-followup-to: Jens Axboe <jens.axboe@xxxxxxxxxx>, Mark McLoughlin <markmc@xxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, device-mapper development <dm-devel@xxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Mikulas Patocka <mpatocka@xxxxxxxxxx>
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References: <1251992870.3084.125.camel@blaa>
Reply-to: device-mapper development <dm-devel@xxxxxxxxxx>
User-agent: Mutt/1.5.18 (2008-05-17)

On Thu, Sep 03, 2009 at 04:47:50PM +0100, Mark McLoughlin wrote:
> We should error all barriers, even empty barriers, on devices like
> virtio_blk which don't support them.

Acked-by: Alasdair G Kergon <agk@xxxxxxxxxx>

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