On Wed, Aug 16, 2023 at 03:33:30PM +0200, David Hildenbrand wrote: > My simple tests passed so far. If there isn't something obvious missing, > I can do more testing and send this as an official patch. I think you missed one: +++ b/mm/swapfile.c @@ -1490,7 +1490,7 @@ int swp_swapcount(swp_entry_t entry) page = vmalloc_to_page(p->swap_map + offset); offset &= ~PAGE_MASK; - VM_BUG_ON(page_private(page) != SWP_CONTINUED); + VM_BUG_ON(page_swap_entry(page).val != SWP_CONTINUED); do { page = list_next_entry(page, lru); I'm not smart enough to understand the use of the one in add_swap_count_continuation(). Maybe that also needs to be fixed? Maybe it should be fixed for consistency anyway.