mm: hugetlb: call huge_pte_alloc() only if ptep is null

[firefly-linux-kernel-4.4.55.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4fe4340ed9b790ab134bb1deb5be578d7425828f..9e3fa71b1e1817e4dc9963a52a4090f3f8fa2d08 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3696,12 +3696,12 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
                } else if (unlikely(is_hugetlb_entry_hwpoisoned(entry)))
                        return VM_FAULT_HWPOISON_LARGE |
                                VM_FAULT_SET_HINDEX(hstate_index(h));
+       } else {
+               ptep = huge_pte_alloc(mm, address, huge_page_size(h));
+               if (!ptep)
+                       return VM_FAULT_OOM;
        }
 
-       ptep = huge_pte_alloc(mm, address, huge_page_size(h));
-       if (!ptep)
-               return VM_FAULT_OOM;
-
        mapping = vma->vm_file->f_mapping;
        idx = vma_hugecache_offset(h, vma, address);