[dm-devel] Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

[David Chinner]

On Thu, May 31, 2007 at 02:07:39AM +0100, Alasdair G Kergon wrote:
> On Thu, May 31, 2007 at 10:46:04AM +1000, Neil Brown wrote:
> > If a filesystem cares, it could 'ask' as suggested above.
> > What would be a good interface for asking?
> 
> XFS already tests:
>   bd_disk->queue->ordered == QUEUE_ORDERED_NONE

The side effects of removing that check is what started
this whole discussion.

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group