diff options
| -rw-r--r-- | mm/memory.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/mm/memory.c b/mm/memory.c index ca8cac11bd2..c0e7741a98d 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2307,13 +2307,14 @@ oom: * do not need to flush old virtual caches or the TLB. * * We enter with non-exclusive mmap_sem (to exclude vma changes, - * but allow concurrent faults), and pte mapped but not yet locked. + * but allow concurrent faults), and pte neither mapped nor locked. * We return with mmap_sem still held, but pte unmapped and unlocked. */ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, - unsigned long address, pte_t *page_table, pmd_t *pmd, + unsigned long address, pmd_t *pmd, pgoff_t pgoff, unsigned int flags, pte_t orig_pte) { + pte_t *page_table; spinlock_t *ptl; struct page *page; pte_t entry; @@ -2327,7 +2328,6 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, vmf.flags = flags; vmf.page = NULL; - pte_unmap(page_table); BUG_ON(vma->vm_flags & VM_PFNMAP); if (likely(vma->vm_ops->fault)) { @@ -2468,8 +2468,8 @@ static int do_linear_fault(struct mm_struct *mm, struct vm_area_struct *vma, - vma->vm_start) >> PAGE_CACHE_SHIFT) + vma->vm_pgoff; unsigned int flags = (write_access ? FAULT_FLAG_WRITE : 0); - return __do_fault(mm, vma, address, page_table, pmd, pgoff, - flags, orig_pte); + pte_unmap(page_table); + return __do_fault(mm, vma, address, pmd, pgoff, flags, orig_pte); } @@ -2552,9 +2552,7 @@ static int do_nonlinear_fault(struct mm_struct *mm, struct vm_area_struct *vma, } pgoff = pte_to_pgoff(orig_pte); - - return __do_fault(mm, vma, address, page_table, pmd, pgoff, - flags, orig_pte); + return __do_fault(mm, vma, address, pmd, pgoff, flags, orig_pte); } /* |