mm: add CONFIG_DEBUG_VM_RB build option

[firefly-linux-kernel-4.4.55.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0cdab4e0f814d21484431df0ba58a276ec918b40..0e6f9c9f212364625be62fb737411b9f52f09319 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1386,6 +1386,9 @@ struct anon_vma_chain *anon_vma_interval_tree_iter_first(
        struct rb_root *root, unsigned long start, unsigned long last);
 struct anon_vma_chain *anon_vma_interval_tree_iter_next(
        struct anon_vma_chain *node, unsigned long start, unsigned long last);
+#ifdef CONFIG_DEBUG_VM_RB
+void anon_vma_interval_tree_verify(struct anon_vma_chain *node);
+#endif
 
 #define anon_vma_interval_tree_foreach(avc, root, start, last)          \
        for (avc = anon_vma_interval_tree_iter_first(root, start, last); \