diff options
| author | Liam R. Howlett <Liam.Howlett@oracle.com> | 2023-05-18 10:55:43 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-09 16:25:35 -0700 |
| commit | bb5dbd2272b8d7b3a34d234bb916819afbf802d1 (patch) | |
| tree | cc4bf310a28fa9c3b8ac878bc9bc6f4f203855a6 /include | |
| parent | eb2e817f38cafbf776ffec9b273aaada6ffc274d (diff) | |
| download | lwn-bb5dbd2272b8d7b3a34d234bb916819afbf802d1.tar.gz lwn-bb5dbd2272b8d7b3a34d234bb916819afbf802d1.zip | |
mm: add vma_iter_{next,prev}_range() to vma iterator
Add functionality to the VMA iterator to advance and retreat one offset
within the maple tree, regardless of the value contained. This can lead
to less re-walking to find an area of interest, especially when there is
nothing in that offset.
Link: https://lkml.kernel.org/r/20230518145544.1722059-35-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: David Binderman <dcb314@hotmail.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 280429ffa91d..62bb3272e531 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -866,11 +866,24 @@ static inline struct vm_area_struct *vma_next(struct vma_iterator *vmi) return mas_find(&vmi->mas, ULONG_MAX); } +static inline +struct vm_area_struct *vma_iter_next_range(struct vma_iterator *vmi) +{ + return mas_next_range(&vmi->mas, ULONG_MAX); +} + + static inline struct vm_area_struct *vma_prev(struct vma_iterator *vmi) { return mas_prev(&vmi->mas, 0); } +static inline +struct vm_area_struct *vma_iter_prev_range(struct vma_iterator *vmi) +{ + return mas_prev_range(&vmi->mas, 0); +} + static inline unsigned long vma_iter_addr(struct vma_iterator *vmi) { return vmi->mas.index; |