diff --git a/ld/ChangeLog b/ld/ChangeLog
index 068715e964..18a95f1a8b 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,9 @@
+2017-10-03  Alan Modra  <amodra@gmail.com>
+
+	PR 21294
+	* NEWS: Note that defaulting to -z relro results in increased
+	memory and disk size.
+
 2017-10-03  Alan Modra  <amodra@gmail.com>
 
 	* ld.texinfo (-z relro): Expand description.
diff --git a/ld/NEWS b/ld/NEWS
index bb5a62bd93..2445896418 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -73,7 +73,8 @@ Changes in 2.27:
 
 * Add a configure option --enable-relro to decide whether -z relro should
   be enabled in ELF linker by default.  Default to yes for all Linux
-  targets except FRV, HPPA, IA64 and MIPS.
+  targets except FRV, HPPA, IA64 and MIPS.  Note that -z relro can increase
+  disk and memory size.
 
 * Support for -z noreloc-overflow in the x86-64 ELF linker to disable
   relocation overflow check.