On Wed, Feb 08, 2017 at 09:43:27AM +0100, Uladzislau Rezki wrote: > From: Uladzislau 2 Rezki <[email protected]> > > While doing a load balance there is a race in setting > loop_max variable since nr_running can be changed causing > incorect iteration loops. > > As a result we may skip some candidates or check the same > tasks again.
When doing the actual migration we'll drop this lock again and nr_running can change again. This cannot be done perfectly, all of load-balancing is riddled with races like this, nobody cares.
