On Tue, Mar 15, 2022 at 03:18:30PM +0100, David Hildenbrand wrote: > This is just the natural follow-up of part 2, that will also further > reduce "wrong COW" on the swapin path, for example, when we cannot remove > a page from the swapcache due to concurrent writeback, or if we have two > threads faulting on the same swapped-out page. Fixing O_DIRECT is just a > nice side-product :) I know I would benefit alot from a description of the swap specific issue a bit more. Most of this message talks about clear_refs which I do understand a bit better. Is this talking about what happens after a page gets swapped back in? eg the exclusive bit is missing when the page is recreated? Otherwise nothing stood out to me here, but I know almost nothing about swap. Thanks, Jason
