1 files changed, 5 insertions, 1 deletions

diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 55ca73cf25e5..634b8e674ac5 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -55,7 +55,7 @@ static inline int radix_tree_is_indirect_ptr(void *ptr)
 
 /*** radix-tree API starts here ***/
 
-#define RADIX_TREE_MAX_TAGS 2
+#define RADIX_TREE_MAX_TAGS 3
 
 /* root tags are stored in gfp_mask, shifted by __GFP_BITS_SHIFT */
 struct radix_tree_root {
@@ -192,6 +192,10 @@ unsigned int
 radix_tree_gang_lookup_tag_slot(struct radix_tree_root *root, void ***results,
                 unsigned long first_index, unsigned int max_items,
                 unsigned int tag);
+unsigned long radix_tree_range_tag_if_tagged(struct radix_tree_root *root,
+                unsigned long *first_indexp, unsigned long last_index,
+                unsigned long nr_to_tag,
+                unsigned int fromtag, unsigned int totag);
 int radix_tree_tagged(struct radix_tree_root *root, unsigned int tag);
 
 static inline void radix_tree_preload_end(void)