Re: [PATCH v2] page cache: Store only head pages in i_pages

[Matthew Wilcox]

On Fri, Feb 15, 2019 at 01:41:15AM +0300, Kirill A. Shutemov wrote:
>   - __delete_from_swap_cache() will blow up on
> 
>       VM_BUG_ON_PAGE(entry != page + i, entry);

Right.

@@ -167,7 +167,7 @@ void __delete_from_swap_cache(struct page *page, 
swp_entry_t entry)
 
        for (i = 0; i < nr; i++) {
                void *entry = xas_store(&xas, NULL);
-               VM_BUG_ON_PAGE(entry != page + i, entry);
+               VM_BUG_ON_PAGE(entry != page, entry);
                set_page_private(page + i, 0);
                xas_next(&xas);
        }