Re: [PATCH] mm/page_alloc: cache the result of node_dirty_ok()

[Johannes Weiner]

On Sat, Apr 30, 2022 at 10:10:32AM +0900, Wonhyuk Yang wrote:
> To spread dirty page, nodes are checked whether
> it reached the dirty limit using the expensive
> node_dirty_ok(). To reduce the number of calling
> node_dirty_ok(), last node that hit the dirty
> limit is cached.
> 
> Instead of caching the node, caching both node
> and it's result of node_dirty_ok() can reduce
> the number of calling node_dirty_ok() more than
> before.
> 
> Signed-off-by: Wonhyuk Yang <vvghjk1234@xxxxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Looks good to me. I like Andrew's naming fixlet as well.