Linux 3.14

[~andy/linux] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index be6a0c0d4ae081d48edd26f09d37f67cc70b1c52..22dfa617bddb69af777298c45739a0113f965b13 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3348,6 +3348,7 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
                if (ret & VM_FAULT_LOCKED)
                        unlock_page(vmf.page);
                ret = VM_FAULT_HWPOISON;
+               page_cache_release(vmf.page);
                goto uncharge_out;
        }
 
@@ -3703,7 +3704,6 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
        if (unlikely(is_vm_hugetlb_page(vma)))
                return hugetlb_fault(mm, vma, address, flags);
 
-retry:
        pgd = pgd_offset(mm, address);
        pud = pud_alloc(mm, pgd, address);
        if (!pud)
@@ -3741,20 +3741,13 @@ retry:
                        if (dirty && !pmd_write(orig_pmd)) {
                                ret = do_huge_pmd_wp_page(mm, vma, address, pmd,
                                                          orig_pmd);
-                               /*
-                                * If COW results in an oom, the huge pmd will
-                                * have been split, so retry the fault on the
-                                * pte for a smaller charge.
-                                */
-                               if (unlikely(ret & VM_FAULT_OOM))
-                                       goto retry;
-                               return ret;
+                               if (!(ret & VM_FAULT_FALLBACK))
+                                       return ret;
                        } else {
                                huge_pmd_set_accessed(mm, vma, address, pmd,
                                                      orig_pmd, dirty);
+                               return 0;
                        }
-
-                       return 0;
                }
        }