On Thu, Nov 30, 2023 at 11:56:42AM -0500, Johannes Weiner wrote: > [...] > So I wouldn't say it's merely a reclaim hint. It controls a very > concrete and influential factor in VM decision making. And since the > global swappiness is long-established ABI, I don't expect its meaning > to change significantly any time soon. I want to add to this last point. While swappiness does not have terribly well-defined semantics - it is the (only?) existing mechanism to control balance between anon and file reclaim. I'm merely advocating for the ability to adjust swappiness during proactive reclaim separately from reactive reclaim. To what degree the behavior and semantics of swappiness change is a bit orthogonal here.
