Re: [Xen-devel] blkfront and flush

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

It sounds reasonable to me, although I'm no Linux blkdev interface expert.

 -- Keir

On 12/6/08 23:35, "Bruce Rogers" <BROGERS@xxxxxxxxxx> wrote:

> Now that no-data barriers are supported/supportable, does it make sense to
> have blkfront call blk_queue_issue_flush_fn to register a flush method, which
> would use a no-data barrier request?
> 
> Is there any reason why this shouldn't work?
> 
> We have code which instead of using a  bio barrier, calls blkdev_issue_flush()
> in the linux guest, which returns -EOPNOTSUPP because that support has never
> been in blkfront.
> 
> - Bruce Rogers
> 
> 
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