lock_page(page);
delayacct_clear_flag(DELAYACCT_PF_SWAPIN);
+ page = ksm_might_need_to_copy(page, vma, address);
+ if (!page) {
+ ret = VM_FAULT_OOM;
+ goto out;
+ }
+
if (mem_cgroup_try_charge_swapin(mm, page, GFP_KERNEL, &ptr)) {
ret = VM_FAULT_OOM;
goto out_page;