diff options
| -rw-r--r-- | mm/vma.c | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -2587,6 +2587,8 @@ static int __mmap_new_file_vma(struct mmap_state *map, static int __mmap_new_vma(struct mmap_state *map, struct vm_area_struct **vmap, struct mmap_action *action) { + const bool is_anon = !map->file && + !vma_flags_test(&map->vma_flags, VMA_SHARED_BIT); struct vma_iterator *vmi = map->vmi; int error = 0; struct vm_area_struct *vma; @@ -2601,6 +2603,10 @@ static int __mmap_new_vma(struct mmap_state *map, struct vm_area_struct **vmap, return -ENOMEM; vma_iter_config(vmi, map->addr, map->end); + + if (is_anon) + vma_set_anonymous(vma); + vma_set_range(vma, map->addr, map->end, map->pgoff); vma->flags = map->vma_flags; vma->vm_page_prot = map->page_prot; @@ -2610,12 +2616,11 @@ static int __mmap_new_vma(struct mmap_state *map, struct vm_area_struct **vmap, goto free_vma; } + /* Invoke callbacks. */ if (map->file) error = __mmap_new_file_vma(map, vma); - else if (vma_flags_test(&map->vma_flags, VMA_SHARED_BIT)) + else if (!is_anon) error = shmem_zero_setup(vma); - else - vma_set_anonymous(vma); if (error) goto free_iter_vma; |