Re: [PATCH 1/4] mm: Trial do_wp_page() simplification

[Peter Xu]

On Tue, Sep 15, 2020 at 05:03:49PM +0200, Oleg Nesterov wrote:
> > -		if (reuse_swap_page(vmf->page, &total_map_swapcount)) {
> 
> It seems that nobody else calls reuse_swap_page() with total_map_swapcount != NULL.

Seems correct.  Though maybe we could postpone the cleanup later, until the
fallouts of the cow rework settle (just in case we'd like to bring some
mapcount logic back).  Thanks,

-- 
Peter Xu