Normalize *_link and link_* fields to all be *_link.
diff --git a/src/extent.c b/src/extent.c
index ca85201..60e2468 100644
--- a/src/extent.c
+++ b/src/extent.c
@@ -22,7 +22,7 @@
 }
 
 /* Generate red-black tree functions. */
-rb_gen(, extent_tree_szad_, extent_tree_t, extent_node_t, link_szad,
+rb_gen(, extent_tree_szad_, extent_tree_t, extent_node_t, szad_link,
     extent_szad_comp)
 
 JEMALLOC_INLINE_C int
@@ -35,5 +35,4 @@
 }
 
 /* Generate red-black tree functions. */
-rb_gen(, extent_tree_ad_, extent_tree_t, extent_node_t, link_ad,
-    extent_ad_comp)
+rb_gen(, extent_tree_ad_, extent_tree_t, extent_node_t, ad_link, extent_ad_comp)