[Sheepdog] [PATCH v4] remove oids from object list cache when deleting a vdi

[Christoph Hellwig]

On Mon, May 07, 2012 at 05:27:58PM +0800, levin li wrote:
> On 05/07/2012 05:21 PM, Christoph Hellwig wrote:
> >On Sat, May 05, 2012 at 10:43:55AM +0800, levin wrote:
> >>I think the deletion_work_list you mentioned is to keep the deletion work
> >>runs sequentially, we can queue the next work from the list only after the
> >>previous one finishes.
> >Given that deletion_wqueue only has one thread it should always be
> >sequential, right?
> 
> Yes, currently there's only one thread for deletion work,
> maybe it was designed to adapt more thread for the need of
> future, I think this question can be answered by Kazutaka.

I've been looking at the delete code a bit more and I understand it
even less now.  Why does can't delete_one simply loop over all VDIs
in one go?  Are there any fairness issues with multiple deletions?