On Fri, Jun 22, 2018 at 11:51:33AM +0800, Huang, Ying wrote: > +++ b/mm/swap_state.c > @@ -433,7 +433,7 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask, > /* > * Swap entry may have been freed since our caller observed it. > */ > - err = swapcache_prepare(entry); > + err = swapcache_prepare(entry, false); > if (err == -EEXIST) { > radix_tree_preload_end(); > /* This commit should be just a textual conflict.