[PATCH 11/47] xfs: move deferred operations into a separate file

[Christoph Hellwig]

On Thu, Aug 04, 2016 at 08:57:56AM +1000, Dave Chinner wrote:
> So, please explain in more detail what the problem is and what the
> proposed solution is so I (and probably Darrick, too) have some
> understanding of the issue you see with this code.

We were doing 1 (actually 2 with the busy extent tracking) allocations
for each free extent, and now we're up to three.  We need to get this
down to 1 and not increase it for no benefit.