On 2021-01-25 08:32:48 [+0000], Christoph Hellwig wrote:

Well, I put it in quotes because I'm not sure what the exact effect
is.  But we do delay these completions to the softirq now instead of
hardirq context, which at least in theory increases latency.  OTOH it
might even have positive effects on the rest of the system.

The last part is/was my motivation ;)

Sebastian