On Mon, 2022-08-08 at 10:55 -0700, Yang Shi wrote: > > On Fri, Aug 5, 2022 at 12:52 PM Alex Zhu (Kernel) <alexlzhu@xxxxxx> > wrote: > > > > Sounds good, I’ll move this to debugfs then. Will follow up with > > the shrinker code > > in another patch. The shrinker relies on this scanning thread to > > figure out which > > THPs to reclaim. > > I'm wondering whether you could reuse the THP deferred split shrinker > or not. It is already memcg aware. > I'm not convinced that will buy much, since there is very little code duplication between the two. Merging the two might also bring about another bit of extra complexity, due to the deferred split shrinker wanting to shrink every single THP on its "to split" list, while for Alex's shrinker we probably want to split just one (or a few) THPs at a time, depending on memory pressure.
