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

From: Alasdair G Kergon
Date: Thu Aug 06 2009 - 07:46:13 EST

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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

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Next message: Ben Dooks: "Re: How to efficiently handle DMA and cache on ARMv7 ? (was "Is get_user_pages() enough to prevent pages from being swapped out ?")"
Previous message: Paul Menage: "Re: [PATCH 6/6] Makes procs file writable to move all threads by tgid at once"
In reply to: Mark McLoughlin: "[PATCH] block: silently error unsupported empty barriers too"
Next in thread: Christoph Hellwig: "Re: [dm-devel] [PATCH] block: silently error unsupported emptybarriers too"
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