> On Jul 5, 2020, at 12:45 AM, Feng Tang <[email protected]> wrote:
>
> I did reproduce the problem, and from the debugging, this should
> be the same root cause as lore.kernel.org/lkml/[email protected]/
> that loosing the batch cause some accuracy problem, and the solution of
> adding some sync is still needed, which is dicussed in
Well, before taking any of those patches now to fix the regression, we will
need some performance data first. If it turned out the original performance
gain is no longer relevant anymore due to this regression fix on top, it is
best to drop this patchset and restore that VM_WARN_ONCE, so you can retry
later once you found a better way to optimize.
