diff --git a/libc/kernel/common/linux/nfs3.h b/libc/kernel/common/linux/nfs3.h
index 8303459..6bac99d 100644
--- a/libc/kernel/common/linux/nfs3.h
+++ b/libc/kernel/common/linux/nfs3.h
@@ -7,102 +7,118 @@
  ***   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_NFS3_H
 #define _LINUX_NFS3_H
-
 #define NFS3_PORT 2049
 #define NFS3_MAXDATA 32768
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_MAXPATHLEN PATH_MAX
 #define NFS3_MAXNAMLEN NAME_MAX
 #define NFS3_MAXGROUPS 16
 #define NFS3_FHSIZE 64
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_COOKIESIZE 4
 #define NFS3_FIFO_DEV (-1)
 #define NFS3MODE_FMT 0170000
 #define NFS3MODE_DIR 0040000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3MODE_CHR 0020000
 #define NFS3MODE_BLK 0060000
 #define NFS3MODE_REG 0100000
 #define NFS3MODE_LNK 0120000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3MODE_SOCK 0140000
 #define NFS3MODE_FIFO 0010000
-
 #define NFS3_ACCESS_READ 0x0001
 #define NFS3_ACCESS_LOOKUP 0x0002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_ACCESS_MODIFY 0x0004
 #define NFS3_ACCESS_EXTEND 0x0008
 #define NFS3_ACCESS_DELETE 0x0010
 #define NFS3_ACCESS_EXECUTE 0x0020
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_ACCESS_FULL 0x003f
-
 enum nfs3_createmode {
  NFS3_CREATE_UNCHECKED = 0,
  NFS3_CREATE_GUARDED = 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  NFS3_CREATE_EXCLUSIVE = 2
 };
-
 #define NFS3_FSF_LINK 0x0001
 #define NFS3_FSF_SYMLINK 0x0002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_FSF_HOMOGENEOUS 0x0008
 #define NFS3_FSF_CANSETTIME 0x0010
-
 #define NFS3_FSF_DEFAULT 0x001B
 #define NFS3_FSF_BILLYBOY 0x0018
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_FSF_READONLY 0x0008
-
 enum nfs3_ftype {
  NF3NON = 0,
  NF3REG = 1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  NF3DIR = 2,
  NF3BLK = 3,
  NF3CHR = 4,
  NF3LNK = 5,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  NF3SOCK = 6,
  NF3FIFO = 7,
  NF3BAD = 8
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct nfs3_fh {
  unsigned short size;
  unsigned char data[NFS3_FHSIZE];
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3_VERSION 3
 #define NFS3PROC_NULL 0
 #define NFS3PROC_GETATTR 1
 #define NFS3PROC_SETATTR 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3PROC_LOOKUP 3
 #define NFS3PROC_ACCESS 4
 #define NFS3PROC_READLINK 5
 #define NFS3PROC_READ 6
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3PROC_WRITE 7
 #define NFS3PROC_CREATE 8
 #define NFS3PROC_MKDIR 9
 #define NFS3PROC_SYMLINK 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3PROC_MKNOD 11
 #define NFS3PROC_REMOVE 12
 #define NFS3PROC_RMDIR 13
 #define NFS3PROC_RENAME 14
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3PROC_LINK 15
 #define NFS3PROC_READDIR 16
 #define NFS3PROC_READDIRPLUS 17
 #define NFS3PROC_FSSTAT 18
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS3PROC_FSINFO 19
 #define NFS3PROC_PATHCONF 20
 #define NFS3PROC_COMMIT 21
-
 #define NFS_MNT3_PROGRAM 100005
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFS_MNT3_VERSION 3
 #define MOUNTPROC3_NULL 0
 #define MOUNTPROC3_MNT 1
 #define MOUNTPROC3_UMNT 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MOUNTPROC3_UMNTALL 4
-
 #ifdef NFS_NEED_KERNEL_TYPES
-
 #define NFS3_POST_OP_ATTR_WORDS 22
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif