diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 14de54af6c38..fc33952d59c4 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1290,7 +1290,9 @@ int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, } page = pmd_page(pmd); - BUG_ON(is_huge_zero_page(page)); + if (is_huge_zero_page(page)) + goto huge_zero_page; + page_nid = page_to_nid(page); last_cpupid = page_cpupid_last(page); count_vm_numa_event(NUMA_HINT_FAULTS); @@ -1381,6 +1383,11 @@ out: task_numa_fault(last_cpupid, page_nid, HPAGE_PMD_NR, flags); return 0; +huge_zero_page: + pmd = pmd_modify(pmd, vma->vm_page_prot); + set_pmd_at(mm, haddr, pmdp, pmd); + update_mmu_cache_pmd(vma, addr, pmdp); + goto out_unlock; } int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,