diff --git a/libc/kernel/common/linux/notifier.h b/libc/kernel/common/linux/notifier.h
index f1fc461..080d796 100644
--- a/libc/kernel/common/linux/notifier.h
+++ b/libc/kernel/common/linux/notifier.h
@@ -7,44 +7,50 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _LINUX_NOTIFIER_H
 #define _LINUX_NOTIFIER_H
 #include <linux/errno.h>
 #include <linux/mutex.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/rwsem.h>
-
 struct notifier_block {
  int (*notifier_call)(struct notifier_block *, unsigned long, void *);
  struct notifier_block *next;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int priority;
 };
-
 struct atomic_notifier_head {
  spinlock_t lock;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct notifier_block *head;
 };
-
 struct blocking_notifier_head {
  struct rw_semaphore rwsem;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct notifier_block *head;
 };
-
 struct raw_notifier_head {
  struct notifier_block *head;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define ATOMIC_INIT_NOTIFIER_HEAD(name) do {   spin_lock_init(&(name)->lock);   (name)->head = NULL;   } while (0)
 #define BLOCKING_INIT_NOTIFIER_HEAD(name) do {   init_rwsem(&(name)->rwsem);   (name)->head = NULL;   } while (0)
 #define RAW_INIT_NOTIFIER_HEAD(name) do {   (name)->head = NULL;   } while (0)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ATOMIC_NOTIFIER_INIT(name) {   .lock = __SPIN_LOCK_UNLOCKED(name.lock),   .head = NULL }
 #define BLOCKING_NOTIFIER_INIT(name) {   .rwsem = __RWSEM_INITIALIZER((name).rwsem),   .head = NULL }
 #define RAW_NOTIFIER_INIT(name) {   .head = NULL }
-
 #define ATOMIC_NOTIFIER_HEAD(name)   struct atomic_notifier_head name =   ATOMIC_NOTIFIER_INIT(name)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLOCKING_NOTIFIER_HEAD(name)   struct blocking_notifier_head name =   BLOCKING_NOTIFIER_INIT(name)
 #define RAW_NOTIFIER_HEAD(name)   struct raw_notifier_head name =   RAW_NOTIFIER_INIT(name)
-
 #endif