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-rw-r--r--include/linux/radix-tree.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 7a8d2516c73a..935293a24f7d 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -335,6 +335,9 @@ static inline void radix_tree_preload_end(void)
preempt_enable();
}
+int radix_tree_join(struct radix_tree_root *, unsigned long index,
+ unsigned new_order, void *);
+
#define RADIX_TREE_ITER_TAG_MASK 0x00FF /* tag index in lower byte */
#define RADIX_TREE_ITER_TAGGED 0x0100 /* lookup tagged slots */
#define RADIX_TREE_ITER_CONTIG 0x0200 /* stop at first hole */