blkback making assumptions about the id of the requests

[Justin T. Gibbs]

On Sep 2, 2013, at 11:58 AM, Roger Pau Monné <roger.pau at citrix.com> wrote:

> Hello,
> 
> While playing with driver domains using FreeBSD I've found out that
> blkback in FreeBSD makes assumptions about the id of a request instead
> of actually using the id of the request on the shared ring. This seems
> wrong to me, since a frontend might choose whatever ids it like for the
> requests (like using 100-131 instead of 0-31). The patch attached fixes
> it by copying the id from the request on the ring to blkback internal
> request structure.
> 
> Roger.

It looks to me like the id is set in xbb_dispatch_io().  Why it is done there
and not earlier, I don't recall.

--
Justin