Hello,

On Fri, Jun 04, 2021 at 03:24:38PM -0700, Roman Gushchin wrote:

I agree that switching to the nearest ancestor makes sense. If I remember
correctly, I was doing this in v1 (or at least planned to do), but then
switched to zeroing the pointer and then to bdi's wb.

I fixed it in v8 and pushed it here: https://github.com/rgushchin/linux/tree/cgwb.8 .
I'll wait a bit for Jan's and others feedback and will post v8 on Monday.
Hopefully, it will be the final version.

Sounds great.

Btw, how are such patches usually routed? Through Jens's tree?

I think the past writeback patches went through -mm.

Thanks.

-- 
tejun