diff --git a/libc/kernel/common/asm-generic/tlb.h b/libc/kernel/common/asm-generic/tlb.h
index dc1e79f..6669388 100644
--- a/libc/kernel/common/asm-generic/tlb.h
+++ b/libc/kernel/common/asm-generic/tlb.h
@@ -7,31 +7,39 @@
  ***   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_GENERIC__TLB_H
 #define _ASM_GENERIC__TLB_H
-
 #include <linux/swap.h>
 #include <asm/pgalloc.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/tlbflush.h>
-
 #define FREE_PTE_NR 1
 #define tlb_fast_mode(tlb) 1
-
 struct mmu_gather {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct mm_struct *mm;
  unsigned int nr;
  unsigned int need_flush;
  unsigned int fullmm;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct page * pages[FREE_PTE_NR];
 };
-
 #define tlb_remove_tlb_entry(tlb, ptep, address)   do {   tlb->need_flush = 1;   __tlb_remove_tlb_entry(tlb, ptep, address);   } while (0)
 #define pte_free_tlb(tlb, ptep)   do {   tlb->need_flush = 1;   __pte_free_tlb(tlb, ptep);   } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ARCH_HAS_4LEVEL_HACK
 #define pud_free_tlb(tlb, pudp)   do {   tlb->need_flush = 1;   __pud_free_tlb(tlb, pudp);   } while (0)
 #endif
 #define pmd_free_tlb(tlb, pmdp)   do {   tlb->need_flush = 1;   __pmd_free_tlb(tlb, pmdp);   } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define tlb_migrate_finish(mm) do {} while (0)
 #endif