1 files changed, 18 insertions, 13 deletions

diff --git a/mm/memory.c b/mm/memory.c
index cf7b059b57a7..d4ed701e3e5d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3321,20 +3321,20 @@ static void unmap_mapping_range_vma(struct vm_area_struct *vma,
 }
 
 static inline void unmap_mapping_range_tree(struct rb_root_cached *root,
+					    pgoff_t first_index,
+					    pgoff_t last_index,
 					    struct zap_details *details)
 {
 	struct vm_area_struct *vma;
 	pgoff_t vba, vea, zba, zea;
 
-	vma_interval_tree_foreach(vma, root,
-			details->first_index, details->last_index) {
-
+	vma_interval_tree_foreach(vma, root, first_index, last_index) {
 		vba = vma->vm_pgoff;
 		vea = vba + vma_pages(vma) - 1;
-		zba = details->first_index;
+		zba = first_index;
 		if (zba < vba)
 			zba = vba;
-		zea = details->last_index;
+		zea = last_index;
 		if (zea > vea)
 			zea = vea;
 
@@ -3360,18 +3360,22 @@ void unmap_mapping_page(struct page *page)
 {
 	struct address_space *mapping = page->mapping;
 	struct zap_details details = { };
+	pgoff_t	first_index;
+	pgoff_t	last_index;
 
 	VM_BUG_ON(!PageLocked(page));
 	VM_BUG_ON(PageTail(page));
 
+	first_index = page->index;
+	last_index = page->index + thp_nr_pages(page) - 1;
+
 	details.check_mapping = mapping;
-	details.first_index = page->index;
-	details.last_index = page->index + thp_nr_pages(page) - 1;
 	details.single_page = page;
 
 	i_mmap_lock_write(mapping);
 	if (unlikely(!RB_EMPTY_ROOT(&mapping->i_mmap.rb_root)))
-		unmap_mapping_range_tree(&mapping->i_mmap, &details);
+		unmap_mapping_range_tree(&mapping->i_mmap, first_index,
+					 last_index, &details);
 	i_mmap_unlock_write(mapping);
 }
 
@@ -3391,16 +3395,17 @@ void unmap_mapping_pages(struct address_space *mapping, pgoff_t start,
 		pgoff_t nr, bool even_cows)
 {
 	struct zap_details details = { };
+	pgoff_t	first_index = start;
+	pgoff_t	last_index = start + nr - 1;
 
 	details.check_mapping = even_cows ? NULL : mapping;
-	details.first_index = start;
-	details.last_index = start + nr - 1;
-	if (details.last_index < details.first_index)
-		details.last_index = ULONG_MAX;
+	if (last_index < first_index)
+		last_index = ULONG_MAX;
 
 	i_mmap_lock_write(mapping);
 	if (unlikely(!RB_EMPTY_ROOT(&mapping->i_mmap.rb_root)))
-		unmap_mapping_range_tree(&mapping->i_mmap, &details);
+		unmap_mapping_range_tree(&mapping->i_mmap, first_index,
+					 last_index, &details);
 	i_mmap_unlock_write(mapping);
 }
 EXPORT_SYMBOL_GPL(unmap_mapping_pages);