diff options
Diffstat (limited to 'mm/pagewalk.c')
| -rw-r--r-- | mm/pagewalk.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/mm/pagewalk.c b/mm/pagewalk.c index 2ff3a5bebceb..7f1c9b274906 100644 --- a/mm/pagewalk.c +++ b/mm/pagewalk.c @@ -517,6 +517,26 @@ int walk_page_range_novma(struct mm_struct *mm, unsigned long start, return walk_pgd_range(start, end, &walk); } +int walk_page_range_vma(struct vm_area_struct *vma, unsigned long start, + unsigned long end, const struct mm_walk_ops *ops, + void *private) +{ + struct mm_walk walk = { + .ops = ops, + .mm = vma->vm_mm, + .vma = vma, + .private = private, + }; + + if (start >= end || !walk.mm) + return -EINVAL; + if (start < vma->vm_start || end > vma->vm_end) + return -EINVAL; + + mmap_assert_locked(walk.mm); + return __walk_page_range(start, end, &walk); +} + int walk_page_vma(struct vm_area_struct *vma, const struct mm_walk_ops *ops, void *private) { @@ -526,18 +546,11 @@ int walk_page_vma(struct vm_area_struct *vma, const struct mm_walk_ops *ops, .vma = vma, .private = private, }; - int err; if (!walk.mm) return -EINVAL; mmap_assert_locked(walk.mm); - - err = walk_page_test(vma->vm_start, vma->vm_end, &walk); - if (err > 0) - return 0; - if (err < 0) - return err; return __walk_page_range(vma->vm_start, vma->vm_end, &walk); } |