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.
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
include/linux/mm.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7b1d4e7393ef..1bd731a2972b 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;
--
2.39.2
