diff --git a/libc/kernel/arch-x86/asm/statfs.h b/libc/kernel/arch-x86/asm/statfs.h
index 592d864..f137d17 100644
--- a/libc/kernel/arch-x86/asm/statfs.h
+++ b/libc/kernel/arch-x86/asm/statfs.h
@@ -7,56 +7,69 @@
  ***   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 _ASM_X86_STATFS_H
 #define _ASM_X86_STATFS_H
-
 #ifdef __i386__
 #include <asm-generic/statfs.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
-
 struct statfs {
  long f_type;
  long f_bsize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_blocks;
  long f_bfree;
  long f_bavail;
  long f_files;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_ffree;
  __kernel_fsid_t f_fsid;
  long f_namelen;
  long f_frsize;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_spare[5];
 };
-
 struct statfs64 {
  long f_type;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_bsize;
  long f_blocks;
  long f_bfree;
  long f_bavail;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_files;
  long f_ffree;
  __kernel_fsid_t f_fsid;
  long f_namelen;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long f_frsize;
  long f_spare[5];
 };
-
 struct compat_statfs64 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 f_type;
  __u32 f_bsize;
  __u64 f_blocks;
  __u64 f_bfree;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u64 f_bavail;
  __u64 f_files;
  __u64 f_ffree;
  __kernel_fsid_t f_fsid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 f_namelen;
  __u32 f_frsize;
  __u32 f_spare[5];
 } __attribute__((packed));
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #endif