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-rw-r--r--include/linux/radix-tree.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 51a97ac8bfbf..83f708e5db59 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -136,6 +136,11 @@ do { \
(root)->rnode = NULL; \
} while (0)
+static inline bool radix_tree_empty(struct radix_tree_root *root)
+{
+ return root->rnode == NULL;
+}
+
/**
* Radix-tree synchronization
*