| 12 +++++-------
 3 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index a8138ff7d1fa..d3ef586ee1c0 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -4000,6 +4000,11 @@ static inline unsigned long vma_pages(const struct vm_area_struct *vma)
 	return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 }
 
+static inline unsigned long vma_last_pgoff(struct vm_area_struct *vma)
+{
+	return vma->vm_pgoff + vma_pages(vma) - 1;
+}
+
 static inline unsigned long vma_desc_size(const struct vm_area_desc *desc)
 {
 	return desc->end - desc->start;
diff --git a/mm/interval_tree.c b/mm/interval_tree.c
index 32e390c42c53..32bcfbfcf15f 100644
--- a/mm/interval_tree.c
+++ b/mm/interval_tree.c
@@ -15,11 +15,6 @@ static inline unsigned long vma_start_pgoff(struct vm_area_struct *v)
 	return v->vm_pgoff;
 }
 
-static inline unsigned long vma_last_pgoff(struct vm_area_struct *v)
-{
-	return v->vm_pgoff + vma_pages(v) - 1;
-}
-
 INTERVAL_TREE_DEFINE(struct vm_area_struct, shared.rb,
 		     unsigned long, shared.rb_subtree_last,
 		     vma_start_pgoff, vma_last_pgoff, /* empty */, vma_interval_tree)
diff --git a/mm/memory.c b/mm/memory.c
index 5c47309331f5..e4154f03feac 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4227,17 +4227,15 @@ static inline void unmap_mapping_range_tree(struct rb_root_cached *root,
 					    struct zap_details *details)
 {
 	struct vm_area_struct *vma;
-	pgoff_t vba, vea, zba, zea;
 	unsigned long start, size;
 	struct mmu_gather tlb;
 
 	vma_interval_tree_foreach(vma, root, first_index, last_index) {
-		vba = vma->vm_pgoff;
-		vea = vba + vma_pages(vma) - 1;
-		zba = max(first_index, vba);
-		zea = min(last_index, vea);
-		start = ((zba - vba) << PAGE_SHIFT) + vma->vm_start;
-		size = (zea - zba + 1) << PAGE_SHIFT;
+		const pgoff_t start_idx = max(first_index, vma->vm_pgoff);
+		const pgoff_t end_idx = min(last_index, vma_last_pgoff(vma)) + 1;
+
+		start = vma->vm_start + ((start_idx - vma->vm_pgoff) << PAGE_SHIFT);
+		size = (end_idx - start_idx) << PAGE_SHIFT;
 
 		tlb_gather_mmu(&tlb, vma->vm_mm);
 		zap_page_range_single_batched(&tlb, vma, start, size, details);
-- 
2.43.0[PATCH v1 04/16] mm/memory: simplify calculation in unmap_mapping_range_tree()"David Hildenbrand (Arm)" <david@kernel.org> undefinedlinux-kernel@vger.kernel.org undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined 3†£H