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Re: [dm-devel] [PATCH] block: silently error unsupported empty barriers too

From: Alasdair G Kergon <agk redhat com>
To: Mark McLoughlin <markmc redhat com>
Cc: Rusty Russell <rusty rustcorp com au>, linux-kernel <linux-kernel vger kernel org>, virtualization <virtualization lists linux-foundation org>, device-mapper development <dm-devel redhat com>, Mikulas Patocka <mpatocka redhat com>, Jens Axboe <jens axboe oracle com>
Subject: Re: [dm-devel] [PATCH] block: silently error unsupported empty barriers too
Date: Thu, 6 Aug 2009 12:45:50 +0100

On Thu, Aug 06, 2009 at 12:14:17PM +0100, Mark McLoughlin wrote:
> We should error all barriers, even empty barriers, on devices like
> virtio_blk which don't support them.
 
Have you considered whether or not virtio_blk actually needs to
support empty barriers?

Alasdair

Follow-Ups:
- Re: [dm-devel] [PATCH] block: silently error unsupported empty barriers too
  - From: Christoph Hellwig
- Re: [dm-devel] [PATCH] block: silently error unsupported empty barriers too
  - From: Mikulas Patocka

References:
- [dm-devel] [PATCH] block: silently error unsupported empty barriers too
  - From: Mark McLoughlin

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